How do I find my user id in linux?
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What does the following command line produce? Explain each aspect of this line. $ (date ; ps -ef | awk {print $1}' | sort | uniq | wc -l ) >> Activity.log
Explain getopts command of linux?
How do I permanently delete linux history?
What is the command to change from /etc/passwd file to /etc/shadow file?
What is the pwd command?
What does cd – command do?
What are system commands?
What is the export command used for?
how to call recursive grep function?
What does curl command do in linux?
What does r mean linux?
difference between patches and packages? and how to upgrade patches