UNIX

• What is the most common editor used in the UNIX environment ?
  • vi
• In which file are the UNIX user details and passwords kept ?
  • /etc/passwd
• What is the purpose of the /tmp directory ?
  • It is used for temporary files produced as a result of running commands and piping data to other commands.
• What command is used to change the permissions on files and directories ?
  • chmod
• List three types of shells commonly available in a UNIX environment
  • csh (C-Shell), ksh (Korn-Shell), sh (Bourne Shell), bash (Born Again Shell)