Question 1: What statement concerning the following wildcard meets the point? A[0-9]* |
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All files with numbers inside their names |
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All files beginning with the letter A followed by any number of numbers |
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All files beginning with the letter A and 0 to 9 following letters |
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All files beginning with the letter A followed by any of the letters 0, - or 9 |
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All files beginning with the letter A followed by a number |
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| Question 2: What device is described by the following special file? /dev/hdb2 |
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The second primary partition of the master on the second IDE-channel |
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The second logical partition of the master on the first IDE-channel |
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The second bootsector of the master on the first IDE-channel |
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The second primary partition of the slave on the first IDE-channel |
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The slave on the second IDE-channel |
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| Question 3: Which command shows you, how much space in Kilobytes is available on all mounted partitions? |
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fdisk |
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df -k |
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du |
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free |
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df --free_space |
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| Question 4: How could you get the information, what kind of quota is activated for user foo? |
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quota foo |
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quota --user foo |
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quotainfo foo |
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repquota foo |
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repquota --user foo |
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| Question 5: How could you help users to create files with serious file permissions? |
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Teach users how to use chmod |
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Change the user's directory permissions |
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Use a serious umask setting in the user's profile |
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Use cron to change the file permissions of the users files once a day |
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Use replacements for the standard unix tools which create secure files |
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| Question 6: User Bertha is member of different groups. How could you ensure, that her default group is foobar? |
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Ensure that the groupname foobar is the first entry in her /etc/group line |
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Ensure that the GID of foobar is the lowest GID of all her GIDs |
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Ensure that the GID of foobar is the highest GID of all her GIDs |
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Ensure that the GID of foobar is placed in her /etc/passwd entry |
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Add the line "chgrp foobar" inside her startup script |
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| Question 7: You create a hard link bar which points to the file foo. If you remove the file foo, what happens? |
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The link exists but any access would lead to an error |
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The link is automaticly changed into a regular file with the content of foo. |
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The link is automaticly removed, too |
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The link but not the file was removed. |
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The link exists and it is possible to have access to it's content |
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| Question 8: User Mike has created a file with important content last week. But now he doesn't remember the filename or location of this file. The only thing he remembers is, that the filename contains the word "Urgent". How could you help him? |
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which "*Urgent*" |
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which *Urgent* |
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find / -name Urgent |
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whereis "*Urgent*" |
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locate Urgent |
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| Question 9: How can you describe the function of the following commands? foo | xargs bar |
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The command bar is started with the output of the command foo as parameters |
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The command foo redirects its output to the command xargs. After that the command bar is started |
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The command foo is started with the output of the command bar as parameters |
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The command foo redirects its output to the command xargs. xargs writes its output to bar |
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The command xargs gets its input by the file foo and writes its output to the file bar |
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| Question 10: You have built a new kernel and the necessary module for your soundcard. Where could you enter the irq, dma and ioport settings for this card? |
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In the append-command in /etc/lilo.conf |
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In /etc/conf.modules or /etc/modules.conf |
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In /proc/sound |
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In /proc/sound/card0 |
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Append the values to the kernel name while booting |
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| Question 11: You want to activate graphical login on your Linux box so everybody can use a secure X11. What would you do to start this service every time from now on? |
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Switch to the displaymanager runlevel |
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Start the klogin program |
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Enter the number of the displaymanager runlevel in the entry of the default runlevel in /etc/inittab. |
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Start the xdm program |
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Start the xlogin program |
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| Question 12: How could you get informations about all manpages which content the word foo in their short description? |
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apropos foo |
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list foo |
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man foo |
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whatis foo |
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which foo |
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| Question 13: What command would you use to create a new group named foo? |
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create --group=foo |
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groupadd foo |
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newgrp foo |
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mkgrp foo |
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addgroup foo |
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| Question 14: Where could you configure the behavior of the syslog daemon? |
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/etc/syslog.conf |
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/var/log/syslogd.conf |
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/var/lib/syslogd/configure |
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/etc/syslogd.conf |
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/var/log/syslog.conf |
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| Question 15: A high nice value of a process means? |
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the process uses no enviroment |
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the process uses less irqs |
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the process allows interprocess communication |
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the priority of the process is higher than normal |
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the priority of the process is lower than normal |
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| Question 16: How many primary partitions could you create and use with Linux on one single harddisk? |
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1 |
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4 |
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8 |
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3 |
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2 |
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| Question 17: Which command shows you, how much space is available on all mounted partitions? |
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df |
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du |
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free |
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df --free_space |
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fdisk |
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| Question 18: How could you describe the following commandline? foo && bar |
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This isn't a valid commandline |
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The command foo and the command bar are started simultaneously. |
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The command bar is only processed if the command foo leaves without error. |
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The command bar is only processed if the command foo leaves with an error. |
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The command foo is started in the background, the command bar is started in the foreground. |
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| Question 19: You want to enable all of your users to use about 20 megabyte of diskspace in their home-directories and about 5 megabyte in /tmp. What action concerning the partitioning is necessary? |
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/home and /tmp each have to be on a own partition |
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Every partition with userquotas need the entry usrquota in the options-field in /etc/fstab |
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Use qfdisk instead of fdisk to create disk-quota partitions |
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One partition for /home is enough. You can symlink /tmp to /home later |
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Every partition with userquotas have to have the file [a]quota.user on their root |
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| Question 20: The file foo has a permission mode of -rw-------, is owned by user bar and belongs to group foobar. Which of the following commands would allow members of the group foobar to read the file? |
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chmod +r foo |
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chmod 604 foo |
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chmod a+r foo |
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chmod g+r foo |
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chmod o+r foo |
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| Question 21: What would be the default file permission modes for new files if you set umask to 022 ? |
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220 |
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022 |
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644 |
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755 |
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550 |
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| Question 22: You get an error message, concerning the USB every time you boot your system. Your system works perfectly exept USB. Now you want to get information from a Linux guru named bob@foo.bar.org. He asks you to send him the boot messages via email. How could you send him the necessary boot-information of your system? |
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grep kernel /var/log/messages | mail bob@foo.bar.org |
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mail bob@foo.bar.org < /var/log/messages |
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dmesg | mail bob@foo.bar.org |
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mail bob@foo.bar.org < /var/log/dmesg |
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mail bob@foo.bar.org < /boot/message |
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| Question 23: You want remove the file -file-. Which of the following answers are correct? |
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rm -"file"- |
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rm \-file\- |
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rm [-]file[-] |
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rm -- -file- |
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rm ./-file- |
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| Question 24: Which would be the command to delete the enviroment variable FOO from the current enviroment in the bash shell? |
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unset FOO |
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destroy FOO |
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delete $FOO |
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FOO= |
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rm -rf $FOO |
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| Question 25: How would you add the directory /usr2/bin to the enviroment variable PATH in the bash shell? |
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PATH=PATH |
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$PATH=$PATH |
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$PATH=/usr2/bin |
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PATH=$PATH |
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PATH=$PATH:/usr2/bin |
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| Question 26: The __-command starts processes with less priority. |
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nice |
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less |
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prior |
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startproc |
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more |
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| Question 27: How could you display any line of text from the file foo which starts with an upcase letter? |
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grep "[A-Z]" foo |
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grep "^[A-Z]" foo |
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grep "$[A-Z]" foo |
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grep "+[A-Z]" foo |
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grep [A-Z] foo |
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| Question 28: What command would you use to copy all files inside the current directory which names begin with a number to /tmp |
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cp [0-9].* /tmp |
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cp [0-9*] /tmp |
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cp [0-9]* /tmp |
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cp [ |
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cp [0-9] /tmp |
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| Question 29: Which command shows you, how much space in Megabytes is available on all mounted partitions? |
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fdisk |
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df -m |
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free -M |
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df |
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du -m |
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| Question 30: You've bought a new harddisk and installed it in your Linux box as master on the second IDE-channel. After partitioning it into two primary partitions and creating filesystems on both partitions, you want to ensure, that both new partitions will be mounted automatically on bootup. What is to do? |
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Add an entry for /dev/hdc1 and /dev/hdc2 to /etc/mtab |
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Add an entry for /dev/hdc to /etc/fstab |
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Add an entry for /dev/hdc to /etc/mtab |
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Add an entry for /dev/hdc1 and /dev/hdc2 to /etc/fstab |
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Nothing. The system looks up all partitions at bootup |
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| Question 31: The user foo has got a userquota of 20 megabyte in his home directory. Now you want to give him 40 megabyte instead. What is to do? |
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Edit the file /home/quota.user with an editor |
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Use the command repquota foo |
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Edit the entry for /home in /etc/fstab |
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Use the command edquota foo |
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Use the command addquota foo 20M |
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| Question 32: What would the following command result in? cp `find . -size -12k` /tmp |
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The file with the name "find . -size -12k" will be copied to /tmp |
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All files in the current directory which are smaller than 12 KByte will be copied to /tmp |
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This isn't a valid command |
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All files in the current directory and in all included subdirectories which are smaller than 12 KByte will be copied to /tmp. |
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All files in the current directory and in all included subdirectories which are smaller than 12 KByte will be copied to /tmp. The directory structure will be copied, too. |
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| Question 33: The textfile foo has got 30 lines of text. How could you extract the lines 11 to 20 to STDOUT? |
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head -n 20 | tail -n 10 foo |
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extract -l 11-20 foo |
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head -n 20 foo | tail -n 10 |
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tail -n 20 foo | head -n 10 |
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tail -n 20 | head -n 10 foo |
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| Question 34: What would the following command result in? echo $(date +%H:%M) > file |
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The string "date +%H |
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This isn't a valid command |
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The content of the variable named "date +%H |
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The content of the variable named after the current time (Hours and Minutes) will be written into file |
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The current time (Hours and Minutes) will be written into file |
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| Question 35: What is the result of the following command? cd ~foo |
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This isn't a valid command |
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The current directory is changed to ~foo |
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The current directory is changed to the home directory of the user foo |
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The current directory is changed to the directory foo inside your home directory |
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The current directory is changed to the nearest directory with a name ending with foo |
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| Question 36: How would you suspend a running foreground-job? |
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Ctrl-D |
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Ctrl-S |
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Ctrl-Z |
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Ctrl-C |
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Ctrl-X |
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| Question 37: What is a daemon-process? |
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A process which isn't reachable by any signals |
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A process without own terminal |
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A hung process which refuses to accept keyboard input |
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A process which isn't reachable by any signals but the KILL signal |
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A process which has already done its work but couldn't die due to other reasons |
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| Question 38: How can you describe the function of the following commands? foo | bar >> foobar |
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The command bar gets its input from the file foo and writes its output to foobar. If foobar exists, the results will be appended. |
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The command foo redirects its output to the command bar, which writes its output to foobar. If foobar exists, the results will be appended. |
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The command foo writes its output to the file bar. If this file exists foo writes into the file foobar instead. |
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The command bar gets its input from the file foo and writes its output to foobar. If foobar exists, it will be overwritten. |
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The command foo redirects its output to the command bar, which writes its output to foobar. If foobar exists, it will be overwritten. |
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| Question 39: The user bertha has marked an important line of one of her textfiles with an asterix (*). But now she forgot the name of the file. How could you find this file, assuming it is located in berthas home directory? |
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grep 0x2A /home/bertha/* |
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grep * /home/bertha/* |
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grep "/*" /home/bertha/* |
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grep \* /home/bertha/* |
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grep --key=asterix /home/bertha/* |
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| Question 40: While monitoring the integrity of the filesystems, you detect, that there are no more free inodes left on the /home partition although there are many megabytes free space. What could be the reason? |
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There are lots of cross-linked files. |
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A user has created lots of very small files. |
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This is a typical filesystem error on ext2 partitions. |
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The inode table is corrupted. |
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The report of many megabytes free space is wrong due to an overflow of the 32 Bit Free-Space-Variable. |
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| Question 41: You have created a new directory named /foo and now you have copied the two files bar and foobar into this new directory. Now you mount a floppy onto /foo using the command "mount /dev/fd0 /foo". What happens to the two files foobar and foo if you would use the command "rm -rf /foo/*" and then umount /foo? |
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Nothing. They are still there |
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It isn't possible to mount a floppy in a non empty directory |
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They are removed but you can restore them |
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They are removed |
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The names appear in the directory but the inodes are deleted |
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| Question 42: What permissions need the files /etc/passwd and /etc/shadow? |
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-rw-r--r--/-rw------- |
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-rw-rw-rw-/-rw-rw-r-- |
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-rw-r--r--/-rw-r--r-- |
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-rwxr--r--/-rw------t |
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-rwsr--r--/-rw------- |
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| Question 43: What would be the default file permission modes for new files if you set umask to 027 ? |
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027 |
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720 |
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640 |
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750 |
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755 |
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| Question 44: How could you watch the contents of a logfile, even if the logfile is growing while you're watching? |
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tail -f logfile |
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more -f logfile |
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head -f logfile |
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watch logfile |
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less -f logfile |
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| Question 45: How could you get the information about the group membership of user foo? |
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group foo |
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cat /etc/passwd | grep foo |
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which groups foo |
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groups foo |
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getusergrp foo |
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| Question 46: How could you detect if the file foo and bar are hardlinked together or not? |
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There is no way to detect this. |
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The command "islink foo bar" shows "yes" if the files are linked together, "no" if not. |
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The command "ls --link foo" shows a list of all files which are hardlinked to foo. |
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The command "find . --hardlink foo" shows a list of all files which are hardlinked to foo. |
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The command "ls -i foo bar" shows the used inodes of foo and bar. If they are the same, they are linked together. |
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| Question 47: You (as a normal user) have created a new file named foo inside /tmp. But if you try to find this file using the command "locate" there is no result. What is the reason? |
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Only the superuser (root) may use locate in /tmp |
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The /tmp directory is not searched by locate |
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You have no search-permission for /tmp |
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locate only searches the system-database. The command will work after the next run of updatedb. |
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locate only looks for commands inside the searchpath of the shell (PATH) |
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| Question 48: What command shows you, what groups you are belonging to? |
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whatgroup |
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grps |
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whatgrp |
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groups |
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group |
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| Question 49: You get a mail from user bart, in which he tells you, that he can't execute a self written shell-script named foo. This script is placed in the directory /home/bart and the user's current working directory is /home/bart,too. The ls -l command shows the script and the user has execute permission. What would probably be the reason of the problem? |
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A user may not execute scripts inside his home-directory |
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The PATH-variable don't includes the . entry |
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The enviroment-variable EXEC is not set |
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A normal user may not execute shellscripts anywhere |
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An error inside the script |
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| Question 50: How could you create a directory /foo/bar if /foo does not exist? |
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createdir /foo/bar |
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mkdir /foo/bar |
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newdir /foo/bar |
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md /foo/bar |
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mkdir -p /foo/bar |
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| Question 51: What means the following construct inside a regular expression? [^A-Z][!A-Z] |
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The starting of a line, followed by an uppercase letter, followed by a non uppercase letter. |
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A non uppercase letter followed by either an ! or an uppercase letter |
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A non uppercase letter at the beginning of a word followed by a non uppercase letter. |
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An uppercase letter at the beginning of a word followed by a non uppercase letter. |
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Either the starting of a line or an uppercase letter followed by a non uppercase letter. |
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