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HANDY ONE-LINERS FOR SED (Unix stream editor) Apr. 26, 2004
compiled by Eric Pement – pemente[at]northpark[dot]edu version 5.4
Latest version of this file is usually at:
http://sed.sourceforge.net/sed1line.txt
http://www.student.northpark.edu/pemente/sed/sed1line.txt
This file is also available in Portuguese at:
http://www.lrv.ufsc.br/wmaker/sed_ptBR.html
FILE SPACING:
# double space a file
sed G
# double space a file which already has blank lines in it. Output file
# should contain no more than one blank line between lines of text.
sed ’/^$/d;G’
# triple space a file
sed ’G;G’
# undo double-spacing (assumes even-numbered lines are always blank)
sed ’n;d’
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