What is unix command line?
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Explain the read, write, and execute permissions on a UNIX directory.
Can a process kill itself in UNIX/or in its various versions?
Which command will print your home directory on screen?
what are wild cards?
what are the different commands used to create files?
What do know about tee command?
What command would users use to see what file one page at a time in UNIX?
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
what is the command to find out which shell you are running?
what are processor execution levels and priorities?
what is mount ,tell me about mount ,how can u use in real time project??
Why is it called a shebang?