what is the difference between Touch & cat command
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How can we use grep command in unix?
What does the “echo” command do?
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when we installing aix os the ssh installed default?
What does the md command do?
What does 'mkdir' command do in UNIX?
What is an Environment Variable?
what is the use of nice command?
What does mkdir up2date; touch outdated up2date do?
Assume that a file’s permissions give you read and write access. What operations can you perform on the file if it is in a directory which has “r”(read) only process? What operations can you perform on the file if it is in a directory which has “x”(execute) only access?
what is the command to find out the difference between files and folders?
What UNIX command will control the default file permissions when files are created?
Unix Commands 
