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Shell Programming and Scripting
Swapping or switching 2 lines using sed
Post 302261216 by radoulov on Monday 24th of November 2008 04:08:58 AM
11-24-2008
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How can you swap the first 4 line only, the rest will stay the same.
thanks
#!/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 DEBIAN
backup-whatsthis
BACKUP-WHATSTHIS(1) Chiark-backup BACKUP-WHATSTHIS(1) NAME
backup-whatsthis - read an id off a tape and display it SYNOPSIS
backup-whatsthis [--list [n]] DESCRIPTION
`backup-whatsthis' is a simple script to display the TAPEID of the current tape and optionally list its contents. This script is a bit of a hack and may not be fully reliable. OPTIONS
--list [n] Print TAPEID then list archive n (default 0). Note that archives are numbered from zero. FILES
/etc/chiark-backup/settings.pl Configuration file for the whole of chiark-backup BUGS
`backup-whatsthis' is currently hardwired to assume `cpio' type backups when listing; it could be trivially hardwired to assume `zafio' or with slightly more effort it could be done properly :->. AUTHOR
This Manual page was written by Matthew Vernon <matthew@debian.org> but may be used by anyone. COPYRIGHT
Copyright (C) 1997-1998,2000-2001 Ian Jackson <ian@chiark.greenend.org.uk> Copyright (C) 1999 Peter Maydell <pmaydell@chiark.greenend.org.uk> This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU- LAR PURPOSE. Debian July 2003 BACKUP-WHATSTHIS(1)