Why is grep called grep?
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what is the use of "fg" command ?
Who invented grep?
distinguish between multi-tasking,multi-user,multi- processing and time sharing?
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How do I clear my terminal history?
What command is used to replace the existing string with some other?
Write a grep (or grep) command that selects the lines from a file that have exactly three characters.
what is the cmd to display the last exit status in UNIX?
What is file system in unix??
What is the protocol for PING command?
What is unix command line?
in unix echo is used for
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What is the unix command to confirm a remote host is alive or not?