What is the purpose of the xargs command?

• A.It reads standard input (STDIN) and builds up command lines to execute.
• B.It helps shellscripts take variable argument lists.
• C.It passes arguments to an X server.
• D.It allows users to specify long options for commands that normally only accept short options.
• E.It asks a question, graphically, and returns the answer to the shell.

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What does the command mount --bind do?

• A.It makes the contents of one directory available in another directory
• B.It permanently mounts a regular file to a directory
• C.It mounts all available filesystems to the current directory
• D.It mounts all user mountable filesystems to the user's home directory
• E.It mounts all file systems listed in /etc/fstab which have the option userbind set

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What is the first program the Linux kernel starts at boot time when using System V init?

• A./lib/init.so
• B./proc/sys/kernel/init
• C./etc/rc.d/rcinit
• D./sbin/init
• E./boot/init

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The system configuration file named _______ is commonly used to set the default runlevel.
(Please provide the file name with full path information)

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Which grep command will print only the lines that do not end with a / in the file foo?

• A.grep '/#' foo
• B.grep'/$' foo
• C.grep -v '/#' foo
• D.grep -v '/$' foo

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