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Full Discussion: Remove empty records
Top Forums Shell Programming and Scripting Remove empty records Post 302639145 by ygemici on Friday 11th of May 2012 09:03:48 AM
Old 05-11-2012
Code:
# sed '/^>/N;s/.*\n\(>.*\)/\1/' infile|sed '$s/^>/delete_sed_X/;/^delete_sed_X/d'
>head1
ACGATAGCTCTAGCTAGCTA
>header2
GGCGCTATGGCGACTGATCAGC
CCGAAAGATGCT
>some thing maybe long but single line for sure
GCTAGCTAGCA
>strange header 2
AGCTAGCTGAGGGAGGAGGGA
>other description  2
CGTAGCTAGGTAGATTTA

 

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INTERFACE-ORDER(5)						    resolvconf							INTERFACE-ORDER(5)

NAME
interface-order - resolvconf configuration file DESCRIPTION
The file /etc/resolvconf/interface-order is used to control the order in which resolvconf nameserver information records are processed by those resolvconf update scripts that consult this file. (The name of the file is apt because a resolvconf nameserver information record is named after the interface with which it is associated.) The file contains a sequence of shell glob patterns, one per line. The position of a record in the order is the point at which its name first matches a pattern. Patterns may not contain whitespace, slashes or initial dots or tildes. Blank lines and lines beginning with a '#' are ignored. Resolvconf update scripts in /etc/resolvconf/update.d/ that consult this file include the current default versions of dnsmasq, pdnsd and libc. (Actually they don't read the file directly; they call the utility program /lib/resolvconf/list-records which lists records in the specified order and omits the names of empty records.) EXAMPLE
# /etc/resolvconf/interface-order # Use nameservers on the loopback interface first. lo* # Next use records for Ethernet interfaces eth* # Next use records for Wi-Fi interfaces wlan* # Next use records for PPP interfaces ppp* # Last use other interfaces * AUTHOR
Resolvconf was written by Thomas Hood <jdthood@gmail.com>. COPYRIGHT
Copyright (C) 2004, 2011 Thomas Hood 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. SEE ALSO
resolvconf(8) resolvconf 18 May 2011 INTERFACE-ORDER(5)
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