I am a new Linux sysadmin. How do I remove a user account named foo? How can I delete user using the command line option?
How do I change my own password as well as the passwords of other users as required under Linux operating system without using GUI systems? How can I change or set user password on Linux operating systems?
How do I change my current login shell from bash to ksh under Linux or UNIX or Apple OS X operating systems?
How do I count lines if given word or string matches for each input file under Linux or UNIX-like operating systems?