Sponsored Content
Top Forums Shell Programming and Scripting Parsing Command Line Arguments In C shell script Post 302794995 by hanson44 on Wednesday 17th of April 2013 05:26:46 AM
Old 04-17-2013
You can verify grep works on stdin:
Code:
$ echo xxx | grep y
$ echo xxx | grep x
xxx

In most cases, grep loves stdin, does not need input from a file. Give it a try. grep is one of your best friends for writing scripts.
 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Parsing the command line arguments

Is there a way to get the command line arguments. I am using getopt(3) but if the arguments are more than one for a particular option than it just ignores the second argument. For eg ./a.out -x abc def now abd will be got with -x using getopt "( x : )" and string abc\0def will get stored... (7 Replies)
Discussion started by: jayakhanna
7 Replies

2. Shell Programming and Scripting

Help parsing command line arguments in bash

Looking for a little help parsing some command line arguments in a bash script I am working on, this is probably fairly basic to most, but I do not have much experience with it. At the command line, when the script is run, I need to make sure the argument passed is a file, it exists in the... (3 Replies)
Discussion started by: Breakology
3 Replies

3. Shell Programming and Scripting

Bourne Shell Script that only takes command line arguments

Does anybody know how to Accept a “userid” as a command line argument on a Unix Bourne Shell Script? The output should be something like this: User userid has a home directory of /path/directory the default shell for this user is /path/shell (1 Reply)
Discussion started by: ajaira
1 Replies

4. UNIX for Advanced & Expert Users

Bourne Shell Script that only takes command line arguments

Does anybody know how to Accept a “userid” as a command line argument on a Unix Bourne Shell Script? The output should be something like this: User userid has a home directory of /path/directory the default shell for this user is /path/shell (1 Reply)
Discussion started by: ajaira
1 Replies

5. UNIX for Dummies Questions & Answers

Bourne Shell Script that only takes command line arguments

Does anybody know how to Accept a “userid” as a command line argument on a Unix Bourne Shell Script? The output should be something like this: User userid has a home directory of /path/directory the default shell for this user is /path/shell (5 Replies)
Discussion started by: ajaira
5 Replies

6. Shell Programming and Scripting

Shell script command line arguments

Hello All, i am known to the limitation of different shells while passing more than 9 command line arguments i just tried the example below i do see my current shell is tcsh echo $SHELL /bin/tcsh so if i make my script executable and run it output is ... (6 Replies)
Discussion started by: Deepak Dutt
6 Replies

7. Shell Programming and Scripting

How to use case and command line arguments in shell script?

Hi... can anyone please help me out in using the CASE and command line argument in shell script... i am bit new to shell scripting...below i have explained my proble with example... say i have an executable file with name 'new1.sh' and there are 3 functions in it a(), b() and c()....and there... (5 Replies)
Discussion started by: swap21783
5 Replies

8. Programming

Parsing command line arguments in Python

Hi, I've a python script called aaa.py and passing an command line option " -a" to the script like, ./aaa.py -a & Inside the script if the -a option is given I do some operation if not something else. code looks like ./aaa.py -a . . if options.a ---some operation--- if not options.a... (1 Reply)
Discussion started by: testin
1 Replies

9. Programming

How to pass the command line arguments to the shell script in c language?

hi, I am new in the shell script, and c programming with linux. I am looking to pass the arguments in c program that should be executed by the shell script. e.g. #include <stdio.h> #include <stdlib.h> int main(int argc, char *argv) { int i; for (i=1;i<argc; i++) { ... (2 Replies)
Discussion started by: sharlin
2 Replies

10. UNIX for Dummies Questions & Answers

Script to iterate all command line arguments

Hi guys, I am having trouble with this script. What i want it to do is to iterate all command line arguments in reverse order. The code below does this fine but i need the output to print the words on separate lines instead of one line: #!/bin/bash #Takes in the arguments and displays them... (7 Replies)
Discussion started by: pipeline2012
7 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)
All times are GMT -4. The time now is 04:06 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy