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Unix

Unix
Which symbol is used to separate more than one command in the same command line?

:
;
#
$

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Unix
Which of are following internal commands is used in mail to forward mail to user in user-list?

r user-list
d user-list
e user-list
None of these
m user-list

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Unix
Which command is used to delete all files in the current directory as well as all files and sub-directories in its subdirectories?

rm -r *
rm *.*
None of these
rm all
rm *

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Unix
The agency that sits between the user and the UNIX system is called the

shell
profile
erxc
logic

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Unix
Which of the following commands is used to obtain a list of all files by modification time?

ls -1
ls -R
ls -t
ls -i

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Unix
Which of the following directories contain all the Alias created by a user, including his login directory?

/tmp
/usr
/etc
/dev

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