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UNIX for Beginners Questions & Answers
Double grep and replacing
Post 302995503 by arunkumar_mca on Thursday 6th of April 2017 02:17:50 PM
04-06-2017
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Could you please help in unix scripting for below scenario...
In my input file, there might be a chance of having a string ( Ex:"99999") after 5th double quote for each record. I need to replace it with a space.
Ex : Input :
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Hello,
I need to read a csv file and I am trying to replace a comma with a text DSEE?DSEE.
Example
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This may be a repetitive or simple question, but I have a long running code, which uses a grep with a big argument, and i was wondering if there was a way to replace all of my greps with awk....here are my two commands using greps.
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Hi,
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<div class="snippet abstract">
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Hi Friends,
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Hi All ,
We have source data file as csv file and since data could contain commas ,each attribute is quoted into double quotes.However problem is that some of the attributa data also contain double quotes which is converted to double double quote while creating csv file
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From:
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To:
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6,7,8,9,0,"This; is a test"
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LEARN ABOUT POSIX
zgrep
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)