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Shell Programming and Scripting
Swapping or switching 2 lines using sed
Post 302250113 by LaTortuga on Wednesday 22nd of October 2008 05:54:09 PM
10-22-2008
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How can you swap the first 4 line only, the rest will stay the same.
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#!/bin/sh
line=4
awk -v var="$line" 'NR==var {
s=$0
getline;s=$0"\n"s
getline;print;print s
next
}1' fileko.tx
.
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LEARN ABOUT X11R4
paste
PASTE(1) User Commands PASTE(1) NAME
paste - merge lines of files SYNOPSIS
paste [OPTION]... [FILE]... DESCRIPTION
Write lines consisting of the sequentially corresponding lines from each FILE, separated by TABs, to standard output. With no FILE, or when FILE is -, read standard input. Mandatory arguments to long options are mandatory for short options too. -d, --delimiters=LIST reuse characters from LIST instead of TABs -s, --serial paste one file at a time instead of in parallel -z, --zero-terminated line delimiter is NUL, not newline --help display this help and exit --version output version information and exit AUTHOR
Written by David M. Ihnat and David MacKenzie. REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report paste translation bugs to <http://translationproject.org/team/> COPYRIGHT
Copyright (C) 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://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
Full documentation at: <http://www.gnu.org/software/coreutils/paste> or available locally via: info '(coreutils) paste invocation' GNU coreutils 8.28 January 2018 PASTE(1)