What is unix command line?
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How would you change all occurrences of a value using VI?
What does grep v grep do?
What is awk good for?
29. How to display top 10 users Who | head -10 | wc –w
A file has 1000 lines and i want to display only 1st line how to do it? pls ..tel me
Which Command is Used for temprary switch User?
What is the use of pipes?
Which command is used to delete all files in the current directory and all its sub-directories?
What is grep and how do you use it?
What does #!/ Bin sh do?
What do chgrp command do?
Sorry to all Technical person for mistake of Question. Now i am post currect question Why copied file permission is changed in destination. When i give all permission i.e 777 to file and copy that to other location in destination the permission is 755. But if give permission 555 in destination that file permission is 555 and if give permission 444 to file after copy in destination the file permission is 444. These all are happening in normal user. How the umask value is calculate here really i am not understand. Please write the proper answer. Thanks in Advance