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Full Discussion: Help with script - GREP
Top Forums Shell Programming and Scripting Help with script - GREP Post 302951141 by mirkocosta on Monday 3rd of August 2015 05:25:52 AM
Old 08-03-2015
Help with script - GREP

Hallo gentlemen,

i've a problem removing lines from txt file. To make it simple, here is an example:

TEXT1.TXT --- contents:

Code:
9.9.9.9 geek.net
1.1.1.1 geek.com
2.2.2.2 leet.net

TEXT2.TXT --- contents:

Code:
geek.com
coolbar.org

I simply do:

Code:
cat text1.txt | grep -f text2.txt > final.txt

but it returns a 0 bytes file. In the sample above all i want to do is remove all the lines that contains the strings defined in text2.txt

Since yesterday I used fgrep succesfully (which, AFAIK is the same as grep -f). Any thoughts/help/suggestion?

Thx in advance

Last edited by mirkocosta; 08-03-2015 at 06:33 AM..
 

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GZGREP(1)						      General Commands Manual							 GZGREP(1)

NAME
gzgrep, gzegrep, gzfgrep - search possibly compressed files for a regular expression SYNOPSIS
gzgrep [ grep_options ] [ -e ] pattern filename... DESCRIPTION
gzgrep is used to invoke the grep on compress'ed or gzip'ed files. All options specified are passed directly to grep. If no file is speci- fied, 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 gzgrep is invoked as gzegrep or gzfgrep then egrep or fgrep is used instead of grep. If the GREP environment variable is set, gzgrep uses it as the grep program to be invoked. For example: for sh: GREP=fgrep gzgrep string files for csh: (setenv GREP fgrep; gzgrep string files) AUTHOR
Charles Levert (charles@comm.polymtl.ca) SEE ALSO
grep(1), egrep(1), fgrep(1), gzdiff(1), gzmore(1), gznew(1), gzforce(1), gzip(1), gzexe(1) ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWgzip | +--------------------+-----------------+ |Interface Stability | External | +--------------------+-----------------+ NOTES
Source for gzip is available in the SUNWgzipS package. GZGREP(1)
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