Unix
Which command is used to concatenate all files beginning with the string 'emp' and followed by a non-numeric characters?

more [emp][!0-9]
cat emp[a-z]
cat emp[!0-9]
cat emp[x-z]

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Unix
The ls -l command tells

All of these
how large the file is and when the file was last modified.
None of these
who the owner of the file is
the name of the group owner of the file

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