Which symbol will be used with grep command to match the pattern pat at the beginning of a line ?

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What command can be used to get information about yourself ?

A. which B. pwd C. i /4 D. who am i...

The command to count the number of files in the current directory by using pipes, is_______________?

A. ls | wc B. ls -l | wc -l C. ls | wc -w D. ls | ws -c...

Which command will be used with vi editor to replace text from cursor to right ?

A. r B. R C. s D. S...

Which command is used to assign only read permission to all three categories of the file ‘note’ ?

A. chmod go+r note B. chmod a-rw C. chmod ugo=r note D. chmod u+r,g+r,o-x note...

What command is used to halt a Linux system ?

A. init 0 B. Shutdown -t C. Shutdown -g -y0 D. Ctrl+Alt+Del...