Technical Blog for System Administrator – You can see a real scenario of work experience

UNIX: sudo: sorry, you must have a tty to run sudo

LINUX: How to log all LVM commands

LINUX: Why Does “netstat” Output Show Many Connections in CLOSE_WAIT Status

LINUX: Open Files / Open File Descriptors

LINUX: How to reset all the system file permissions to default in case all file permissions changed to 777

LINUX: Use stat to list file permissions in octal format

LINUX: SSH timeout prevention – keep SSH sessions alive