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Unix

Unix
Which command is used to count just the number of characters in a file?

wc - 1
wc -w
wc -r
wc -c

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Unix
Which command is used to link the files?

None of these
lk
cp
tar
ln

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Unix
Which of the following commands is used to copy a file wb from the programs directory into a file called wbx in the misc directory?

cp programs/wb misc/wbx
copy a:programs/wb b:misc/wbx
copy programs/wb misc/wbx
tar programs/wb misc/wbx

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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 *
rm all

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Unix
The first set of the three permissions (rw) pertains to the owner of the file, indicating that the owner has

both read and executable permissions.
None of these
executable permission only
both read and write permissions
write and executable permissions

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Unix
Which commands is used to assign executable permission to all of the files named "letter"?

chmod ugo+r letter
chmod ugo+rw letter
chmod u+x letter
chmod ugo+x letter

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