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Full Discussion: Number of Lines in a file
Top Forums Shell Programming and Scripting Number of Lines in a file Post 302963423 by TechGyaann on Wednesday 30th of December 2015 07:53:50 AM
Old 12-30-2015
IBM Number of Lines in a file

Hi All,

This is my Scenario:
I wanted to check if a particular name or pattern is present in a file based of that rest of the program should proceed.
I want to print '0' if no matching found.

Code:
v_File_Count=`grep -i "$v_Name_Pattern" $File_Path/Master_File_List.txt | wc -l`

The above command is giving an output where a tab space is present due to which I am not able to do a condition.

Code:
 
 if [[ $v_File_Count == 0]]; then
 xyz...
 fi

Tried to remove the "<Tab Space>" as below but no use Smilie
Code:
 v_File_Count=`grep -i "$v_Name_Pattern" $File_Path/Master_File_List.txt | wc -l | tr "   " ""`
  
  
 ## Below code is not print any value if there is no record -- I want '0' if no record
 v_File_Count=`grep -i "$v_Name_Pattern" $File_Path/Master_File_List.txt | awk '{print NR}'`
 v_File_Count=`grep -i "$v_Name_Pattern" $File_Path/Master_File_List.txt | sed -n '$='`



Sample Input:
File = Master_File_List.txt
Code:
 abcd.txt
 xyz.txt
 lmno.txt

Command:
Code:
v_File_Count=`grep -i "$v_Name_Pattern" $File_Path/Master_File_List.txt | sed -n '$='

** Anycode

Expected Output: ( If there are no matching pattern, 0 should be returned i.e., v_File_Count should have value '0')

Do share your ideas and suggestion

Last edited by Scrutinizer; 12-30-2015 at 09:07 AM.. Reason: quote tags -> code tags
 

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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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