Shell Special Symbol command

Source: Internet
Author: User
  • A wildcard character? Unit # blocked command \ Screen symbol
    | Pipe character $ use variable ~ Home directory & put behind

    >> 2> 2>>
    Error redirection
    [] Array

  • Cut segment
    Cut-d:-f 3, 4 characters
    Files under three and four columns
    -C Line
    -F column (start with-D definition)
    Sort sorts
    SORT-T:
    -K By column
    -N by number
    -R Reverse Order
    -U to repeat
    -O Write file with name
    -F ignores case
    How many lines are in the Wc-l document
    -W How many words
    -m number of characters (line break at the end)
    Uniq to repeat (limit clear adjacent duplicates clear before sorting resolved)
    -C calculates the number of repetitions
    -s Specifies to skip the first n characters
    -W Specifies the maximum character to use for comparison
    -D Find Duplicate rows
    Tee redirects and displays
    W.H.O. | Tee 11
    TR Replacement
    TR ""
    -D Delete after match
    -C Fetch complement set
    -S compression matches the character to a
    Split cutting Large files
    -B by Size
    -L by row
    && and the left command succeeds before executing
    || Or the left command is unsuccessful before it is executed.
    To be executed without success.

    Shell Special Symbol command

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