Bourne Shell

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Bourne Shell (sh)

Initialisation

  1. System file: /etc/profile
  2. User: ~/.profile (environment and terminal settings)

Variables

  • CDPATH - cd search path
  • HOME - home directory
  • IFS - internal field separator
  • LOGNAME
  • MAIL - mailbox location
  • MAILCHECK - check time interval
  • PATH - search path
  • PS1 - primary prompt
  • PS2 - secondary prompt
  • PWD - present working directory
  • SHELL
  • TERM - terminal type

Built-in Commands

  • . (dot)

Special Metacharacters

;      command separator
&      background process
()     command group in subshell
{}     command group without subshell
|      pipe
<      redirected input
>      redirected output
newl   command termination
space  word delimiter
$      variable substitution
*[]?   filename expansion
  • Backslash (\) used for quoting a single character.
  • Single quotes
  • Double quotes

Publications

Links