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DECORATE(1) User Commands DECORATE(1)

NAME

decorate - command-line calculations

SYNOPSIS

decorate [OPTION]... [INPUT]
decorate --decorate [OPTION]... [INPUT]
decorate --undecorate N [OPTION]... [INPUT]

DESCRIPTION

Converts (and optionally sorts) fields of various formats

With --decorate: adds the converted fields to the start of each line and prints and prints it to STDOUT; does not sort.

With --undecorate: removes the first N fields from the input; Use as post-processing step after sort(1).

Without --decorate and --undecorate: automatically decorates the input, runs sort(1) and undecorates the result; This is the easiest method to use.

General Options:

decorate/convert the specified fields and print the output to STDOUT. Does not automatically run sort(1) or undecorates the output
does not decorate or sort the first N lines
same as --header=N
key/field to sort; same syntax as sort(1), optionally followed by ':method' to convert to the field into a sortable value; see examples and available conversion below
use SEP instead of non-blank to blank transition
print adjusted parameters for sort(1); Useful when using --decorate and then manually running sort(1)
removes the first N fields
line delimiter is NUL, not newline
display this help and exit
output version information and exit

The following options are passed to sort(1) as-is:

-c, --check

--compress-program

--random-source

-s, --stable

--batch-size

-S, --buffer-size

-T, --temporary-directory

-u, --unique

--parallel

Available conversions methods (use with -k):

copy as-is
roman numerals
length (in bytes) of the specified field
dotted-decimal IPv4 addresses
IPv6 addresses
number-and-dots IPv4 addresses (incl. octal, hex values)

EXAMPLES

OVERVIEW

The decorate program allows sorting input according to various ordering, e.g. IP addresses, roman numerals, etc. It works in tandem with sort(1) to perform the actual sorting.

The idea was suggested by Pádraig Brady in https://lists.gnu.org/r/bug-coreutils/2015-06/msg00076.html:

1. Decorate: convert the input to a sortable-format as additional fields
2. Sort according to the inserted fields
3. Undecorate: remove the inserted fields

Example of preparing to sort by roman numerals:

$ printf "%s\n" C V III IX XI | decorate -k1,1:roman --decorate
0000100 C
0000005 V
0000003 III
0000009 IX
0000011 XI


The output can now be sent to sort(1), followed by removing
    (=undecorate) the first field.








$ printf "%s\n" C V III IX XI \


       | decorate -k1,1:roman --decorate \


       | sort -k1,1 \


       | decorate --undecorate 1
III
V
IX
XI
C






decorate(1) can automatically combine the
    decorate-sort-undecorate steps (when run without --decorate or
    --undecorate):








$ printf "%s\n" C V III IX XI | decorate -k1,1:roman
III
V
IX
XI
C










ADDITIONAL INFORMATION


See GNU
    Datamash Website (https://www.gnu.org/software/datamash)






AUTHOR


Written by Assaf Gordon.






COPYRIGHT


Copyright © 2020 Assaf Gordon License GPLv3+: GNU GPL
    version 3 or later <https://gnu.org/licenses/gpl.html>.
  

  This is free software: you are free to change and redistribute it. There is NO
    WARRANTY, to the extent permitted by law.






SEE ALSO


The full documentation for decorate is maintained as a
    Texinfo manual. If the info and decorate programs are properly
    installed at your site, the command



  

  
info decorate




should give you access to the complete manual.







  

    April 2020
    decorate 1.7