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Full Discussion: Grep -f for big files
Top Forums UNIX for Beginners Questions & Answers Grep -f for big files Post 303035686 by ahfze on Thursday 30th of May 2019 06:23:41 PM
Old 05-30-2019
im trying to
Code:
grep -f patternfile file

Code:
both patternfile and file are huge so grep doesnt work here.

ive been reading up that awk is the way out here.

Can someone help me with an awk which does the same job as grep -f?
thanks
 

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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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