What is $$ in shell script?
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Which command will show you free/used memory? Does free memory exist on linux?
What are the options of wc command?
How many linux commands are there?
How do I find the process id in linux?
What is bash command?
Which two commands can you use to delete directories?
who invented unix?
what is nis server?
What command used for showing user info like Login Name, Canonical Name, Home Directory,Shell etc in Linux?
How to hide the partition in grub booting?
Explain grep command.
How can you check the amount of lines in a file?