What do chmod, chown, chgrp commands do?
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what is the default signal kill in unix?
what is the use of wild cards?
Why is it called a shebang?
what is the difference between SED and GREP ? Which one is more better and why?
what do you understand by 'building block primitive'?
How we will execute previous command in vi editor?
What is command substitution?
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Is it inbetween or in between?
By using which command we can find the CPU utilization time?
what is the command to list all files in a directory, including the hidden files in UNIX ?
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