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Top Forums Shell Programming and Scripting How to use command tail -f & show line number. Post 302575062 by ahamed101 on Sunday 20th of November 2011 07:04:37 AM
We can eliminate grep...
Code:
tail -f filename  | awk '/key word/{print ++c"\t"$0}'

--ahamed
 
Test Your Knowledge in Computers #544
Difficulty: Medium
Using global variables is generally considered a best practice in modern programming languages..
True or False?

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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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