Sponsored Content
Top Forums Shell Programming and Scripting Manage starting point in shell script. Post 302134151 by vino on Wednesday 29th of August 2007 04:41:25 AM
Old 08-29-2007
Put the case-esac construct in a while loop.

Code:
[/tmp]$ cat test.ksh
#! /bin/ksh
#

while :
do
    case $1 in
        "") set -- a ;;
        "a") echo "a" ; set -- b ;;
        "b") echo "b" ; set -- c ;;
        "c") echo "c" ; set -- d ;;
        "d") echo "d" ; break ;;
        *) echo "Wrong" ; break ;;
    esac
done
[/tmp]$ ./test.ksh
a
b
c
d
[/tmp]$ ./test.ksh a
a
b
c
d
[/tmp]$ ./test.ksh c
c
d
[/tmp]$ ./test.ksh d
d
[/tmp]$ ./test.ksh z
Wrong
[/tmp]$ ./test.ksh abcd
Wrong
[/tmp]$

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to manage multiple versions of a set of shell and SQL script utilities

Hi all --- I have the need to manage multiple versions of a set of utility scripts -- both shell and SQL and other .dat files. I am wondering if anyone out there knows of a good way to "PATH" to SQL and text files in a way similar to how PATH facilitates finding executables in a pre-specified... (2 Replies)
Discussion started by: DennisB
2 Replies

2. Shell Programming and Scripting

Help starting a simple shell script.

I've been sitting here for 6 hours typing out all kinds of different ridiculous(very pointless) shell scripts for a low-level UNIX class. I'm tired.. and want to go to bed :o Can somebody please help get me on the right path to starting this damn script? i'm useless after all these hours and... (2 Replies)
Discussion started by: dickmartin
2 Replies

3. Shell Programming and Scripting

shell script for extracting out the shortest substring from the given starting and en

hi all, i need an urgent help for writing a shell script which will extract out and print a substring which is the shortest substring from the given string where first and last character of that substring will be given by the user. for e.g. if str="abcdpqracdpqaserd" now if the user gives 'a'... (18 Replies)
Discussion started by: pankajd
18 Replies

4. Shell Programming and Scripting

facing problem in starting a process in background using shell script.

hey all, i am working on sun solaris machine and i want to start a process in background using shell script (actually i wanna start tomcat server using shell script). please dont tell me that append a & at last because this is not working in the shell script. i have also used nohup and... (8 Replies)
Discussion started by: dtomar
8 Replies

5. Shell Programming and Scripting

shell script to remove all lines from a file before a line starting with pattern

hi,, i hav a file with many lines.i need to remove all lines before a line begginning with a specific pattern from the file because these lines are not required. Can u help me out with either a perl script or shell script example:- if file initially contains lines: a b c d .1.2 d e f... (2 Replies)
Discussion started by: raksha.s
2 Replies

6. Shell Programming and Scripting

Every nth line with different starting point

Hi every one, I am trying to generate different files from a column of numbers with the following format, as an example: main file(input) 1 2 3 . ... (19 Replies)
Discussion started by: nxp
19 Replies

7. Shell Programming and Scripting

How to compare floating point numbers in shell script?

How can we compare 2 floating point numbers in SHELL script? (11 Replies)
Discussion started by: dearanik
11 Replies

8. Shell Programming and Scripting

Shell script for Server Mount Point space check

Does anybody have anything I can use to help me out with this one? (4 Replies)
Discussion started by: lbone007
4 Replies

9. Shell Programming and Scripting

Starting a C++ program from shell script

Hi, I have a little problem...I want to do the following things: Have my own little script that has 2/3 functions and starts a c++ application using some parameters. The problems appear when I start the c++ app using the shell script, the c++ takes over and after I ctrl+c the script... (0 Replies)
Discussion started by: valiadi
0 Replies

10. Shell Programming and Scripting

shell script help needed to manage FTP automation

Hi, I am very new in shell scripting. Have managed to prepare a script which will work to download data to local directory. But facing below problem. :wall: Please help me out. Thanks in advance. Problem: 1. I am unable to use delete command to delete data in the ftp location (I have... (2 Replies)
Discussion started by: ImranBD
2 Replies
ATF-SH(1)						    BSD General Commands Manual 						 ATF-SH(1)

NAME
atf-sh [-s shell] -- interpreter for shell-based test programs SYNOPSIS
atf-sh script DESCRIPTION
atf-sh is an interpreter that runs the test program given in script after loading the atf-sh(3) library. atf-sh is not a real interpreter though: it is just a wrapper around the system-wide shell defined by ATF_SHELL. atf-sh executes the inter- preter, loads the atf-sh(3) library and then runs the script. You must consider atf-sh to be a POSIX shell by default and thus should not use any non-standard extensions. The following options are available: -s shell Specifies the shell to use instead of the value provided by ATF_SHELL. ENVIRONMENT
ATF_LIBEXECDIR Overrides the builtin directory where atf-sh is located. Should not be overridden other than for testing purposes. ATF_PKGDATADIR Overrides the builtin directory where libatf-sh.subr is located. Should not be overridden other than for testing purposes. ATF_SHELL Path to the system shell to be used in the generated scripts. Scripts must not rely on this variable being set to select a specific interpreter. EXAMPLES
Scripts using atf-sh(3) should start with: #! /usr/bin/env atf-sh Alternatively, if you want to explicitly choose a shell interpreter, you cannot rely on env(1) to find atf-sh. Instead, you have to hardcode the path to atf-sh in the script and then use the -s option afterwards as a single parameter: #! /path/to/bin/atf-sh -s/bin/bash ENVIRONMENT
ATF_SHELL Path to the system shell to be used in the generated scripts. SEE ALSO
atf-sh(3) BSD
September 27, 2014 BSD
All times are GMT -4. The time now is 02:43 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy