What is $$ in shell script?
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How do I list directories in linux?
1.what is Kernel parameters? 2.how many cpu have use in your machine?
How do I permanently set ulimit in linux?
How do display error messages instantly when command fails?
What is shell scripting commands?
What is the best cpu stress test?
What is the command to change from /etc/passwd file to /etc/shadow file?
The command ‘umask -S’
How many interfaces(ethernet cards) are working using single command?
What is linux pwd (print working directory) command?
How do I clear terminal command history?
Write about an internal command.