11-11-2008
Quote:
Originally Posted by
joeyg
I would think a grep to an awk script. The awk script would accumulate the needed information in one or more arrays. When done reading the log file, you would then process/print any data accumulated in the awk arrays.
I am a little new to UNIX programming so I would like to run by you what I plan to do. I would grep for the patterns I need, store it to the a temp file and then, run awk on the temp file to process its contents.....that seems the most straightforward method to me.
One question: If the grep results in no result, how can I tell the script to simply exit? In C++ we could do something like if ![grep pattern] then...how would we go about doing this in shell scripting?
Last edited by mojoman; 11-11-2008 at 05:11 PM..
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
please give the difference between AIX shell scripting and Unix shell scripting. (2 Replies)
Discussion started by: haroonec
2 Replies
2. Shell Programming and Scripting
I guess the subject asks it all, but I am wondering (before I go and code a COBOL module) if conversion of regular ASCII data to COMP-3 is possible on a UNIX environment (AIX 5.1)? Any help would be appreciated! Thanks, Dave (13 Replies)
Discussion started by: dfran1972
13 Replies
3. Shell Programming and Scripting
Hi,
I need sample code to compare the two files line by line which contains text strings and to print the difference in the third file.
Thanks in advance (1 Reply)
Discussion started by: sudhakaryadav
1 Replies
4. Shell Programming and Scripting
Hi
How to call a shell scripting through a Perl scripting? Actually I need some value from Shell scripting and passes in the Perl scripting. So how can i do this? (2 Replies)
Discussion started by: anupdas
2 Replies
5. Shell Programming and Scripting
Hi,
I have general question: i have good working Perl script with .pl extension, and now I have to migrate all to another Linux box, and I was told that I can use only shell scripting, so I'm not sure how different those two things are, will it work without any changes . Is there anything smart I... (6 Replies)
Discussion started by: trento17
6 Replies
6. What is on Your Mind?
Hi all,
I would like to start developping some good scripting skills. Do you think it would be best to start with shell scripting or Perl? I already got a fundation, really basics, in perl. but I am wondering what would be best to be good at first.
Can you please help me determine which one to... (14 Replies)
Discussion started by: Pouchie1
14 Replies
7. Shell Programming and Scripting
Hai ! I am doing a research on Bioinformatics and a part of the code in perl have to be converted to shell scripting. I am new to shell programming. Pls. kindly help me to convert this code to shell script though it is somewhat lengthy.
PLS KINDLY HELP ME. THANKS IN ADVANCE.
my @FreeEnergy =... (1 Reply)
Discussion started by: kswapnadevi
1 Replies
8. What is on Your Mind?
Gents,
I have been working in a Solaris/Unix environment for about 9 months. I took some linux classses online before getting the job. But, I am not very good at scripting. I want to learn how to script. Do you think that I should start with Shell scripting or Perl? I wanted to continue with... (2 Replies)
Discussion started by: Pouchie1
2 Replies
9. Web Development
i am going to study any one of the scripting languages mentioned above(shell 0r perl scripting) . Which is having more scope for a fresher? (1 Reply)
Discussion started by: Anna Hussie
1 Replies
10. Shell Programming and Scripting
I am working on converting shell to Perl script. In shell we have built in function
trap
Do you know alternative in Perl or actually we don't need it?
Thanks for contribution (3 Replies)
Discussion started by: digioleg54
3 Replies
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)