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Linux Command-Line Tools (Linux shell options (Bash, bsh, tcsh, csh, ksh,…

- - - - cd
      - pwd
      - echo text
      - exec prog
      - time pwd
      - Set options
      - exit
    - - Not necessarily installed in the command line
  - - - tab
- - - - Apply to different programs
      - env
      - export NNTPSERVER=news.abigisp.com
- - - - man 'command'
- - - - Output, overriden
    - - output, appends
    - - Error, overrides
    - - error, appends
    - - new file I/E
    - - sends content of file as input
    - - accepts following lines
    - - both input and output
- - - - Uses output of first as second's input
- - - - -E
      - -n
      - =s
      - -b
      - -T
      - -v
  - - - matches using a field
    - - paste
        
        line-by-line
        
        tab
    - - expand
      - spaces to tab
        
        unexpand
    - - od
    - - tr
  - - - reformat
    - - numbers lines
    - - prepare for print
  - - - paging
  - - - extracts portions
    - - word count
- - - - match anything inside the bracket
    - - range
    - - any char except new line
    - - start
        
        $
        
        end
    - - *
        
        zero or more
      - +
        
        one or more
    - - either one
    - - grouping