How does pipe () work?
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How do you create a file in UNIX
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How to display a file name which has zero bytes in size.
How can you copy files or directories?
what is the function of grep command?
When the shell is reading the command line what is the difference between text enclosed between double quotes ( ” ) and text enclosed between signal quotes ( ’ )?
How many unix commands are there?
What are the differences among a system call, a library function, and a unix command?
What is the use of egrep command in unix?
What is nr in awk command?
How to delete a directory containing files and folders?
write grep commands to select the lines that have exactly two characters
distinguish between user mode and kernel mode?