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Full Discussion: delete lines..
Special Forums UNIX Desktop Questions & Answers delete lines.. Post 22060 by Kelam_Magnus on Monday 27th of May 2002 11:24:32 PM
Old 05-28-2002
In the spirit of "many ways to do things in UNIX", Here goes.

cat file.in | grep -v ^$ > file.out

This will use the descriptors ^ for beginning of line and $ for end of line to match a blank line and remove from output with the -v option of grep.

Cool...

It may be less efficient than awk but still valid. And less syntax problems.

Smilie
 

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ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME
zgrep - search possibly compressed files for a regular expression SYNOPSIS
zgrep [ grep_options ] [ -e ] pattern filename... DESCRIPTION
Zgrep invokes grep on compressed or gzipped files. These grep options will cause zgrep to terminate with an error code: (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*). All other options specified are passed directly to grep. If no file is specified, then the standard input is decompressed if necessary and fed to grep. Otherwise the given files are uncompressed if necessary and fed to grep. If the GREP environment variable is set, zgrep uses it as the grep program to be invoked. EXIT CODE
2 - An option that is not supported was specified. AUTHOR
Charles Levert (charles@comm.polymtl.ca) SEE ALSO
grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1) ZGREP(1)
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