What is the unix command to confirm a remote host is alive or not?
How can we "forked" process in UNIX? How then recognize in any of the branches we?
How to find and replace the below command?
What is a shell in Unix? Name some common Unix shells.
Enlist some filename manipulation commands in unix.
What is used to type command?
How do you grep recursively?
Why is awk called awk?
What is a Unix signal, and how do you handle them?
How does the system know where one command ends and another begins?
How are UNIX file permissions represented?
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 use of sed command in unix?