Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: how to reuse a shell script to change env from perl
Top Forums Shell Programming and Scripting how to reuse a shell script to change env from perl Post 302296679 by phil518 on Wednesday 11th of March 2009 03:34:14 PM
Old 03-11-2009
Quote:
Originally Posted by jim mcnamara
I do not know for sure, but I think you have design problem. It appears you ported shell script to perl. If you started with n scripts, and it was a good working design, then you should have n perl scripts as well.

If your perl is well-written, it should be using the same ENV variables names each time it runs, probably against different file sets or databases.

A standard trick in designing something like this is to use shell script "include" files.
So you will now have to extract the ENV definitions from n shell files into small ENV only definition scripts.

Then do something like this - assume we have six files names env1 env2 ... env6
Code:
#!/bin /ksh
set -A envs env1 env2 env3 env4 env5 env6
i=1
while [[ $i - lt 7 ]]
do
   . ${envs[i]}
   # perl code call goes here
done

I do not know of a way to source a file in perl. Sourcing means that shell runs in the current process context some script. perl and shell are NOT the same language, so you would have to parse a shhell script file for variables, then call putenv for each variable.

You will have to add a subroutine to your perl code to do this, call the sub for each external file to need to "source" then run the rest of the perl code. UNless you have hundreds of external scripts, this may not be worth the effort.


[/code]
Hi Jim:

Thanks again for your help.

I am attempting to automate some of our currently manual tasks. We do not have "real" script yet, other than those shell scripts to set ENVs.

Well, I may have to extract them into perl and start from there.

Thanks!
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to run cmds after changing to a new env (shell) in a shell script

Hi, I am using HP-UNIX. I have a requirement as below I have to change env twice like: cadenv <env> cadenv <env> ccm start -d /dbpath ccm tar -xvf *.tar ccm rcv .... mv *.tar BACKUP but after I do the first cadenv <env> , I am unable to execute any of the later commands . ... (6 Replies)
Discussion started by: charlei
6 Replies

2. Shell Programming and Scripting

Source Env file in the Shell Script

Hi I am having a script which sets the application environment. In this script i am sourcing the applications env file, when i am debugging the script i see its executing all the environment values and all the variable values are set properply. Once this main shell script executes, then... (4 Replies)
Discussion started by: umakanthly
4 Replies

3. Shell Programming and Scripting

Set/Export Env Vars from with Shell Script With Input Variable

I have a shell script I want to run that will set environment variables based on the value of an input variable submitted when the shell script is called. For example: $ mgenv.sh prod This would set environment variables for prod $ mgenv.sh test This would set environment variables... (1 Reply)
Discussion started by: brtaylor73
1 Replies

4. UNIX for Advanced & Expert Users

problem in Unix Env. in Shell script

sdir;csp os_lib-0.5.24;bdir;cbpdob ---enable-useosstl os_lib-0.5.24;mbp os_lib-0.5.24; If i run this command in unix shell directly it is running. sdir;csp HA_util-0.0.7;bdir;cbpdob ---enable-useosstl HA_util-0.0.7;mbp HA_util-0.0.7; HA_util === Configuring source package HA_util... (4 Replies)
Discussion started by: girija
4 Replies

5. Shell Programming and Scripting

tcsh env setting using shell script

Hi All, I have made a file file usercreate.sh & it has to run in tcsh env & needs some path to be set. my script is as below. ########################## #!/bin/csh setenv PATH "/usr/lib/java/class" setenv LD_LIBRARAY_PATH ########################### but when i am ruuning my script... (1 Reply)
Discussion started by: ajaincv
1 Replies

6. Shell Programming and Scripting

Perl Csh - setenv ENV change environment variable

I have 3 programs, 1 in perl, 2 in csh: call them perl1, csh1 and run.ol I need perl1 to set csh1 variable NOLOG_qsub = "" I need perl1 to run, run.ol run.ol takes the executable and input and outputs to output run.ol#!/bin/csh -f # run.ol executable input output perl1 should... (1 Reply)
Discussion started by: austinj
1 Replies

7. Shell Programming and Scripting

how to set/get shell env variable in python script

greetings, i have a sh script that calls a python script. the sh script sets an env variable BIN: export BIN=bin64i need to get that BIN variable's value and use it within this python script. anyone know how to do this? thanx in advance. (5 Replies)
Discussion started by: crimso
5 Replies

8. Shell Programming and Scripting

How to reuse values in Shell script

Hi I am trying to write a shell script and wanted to re-use the value which I have entered already. Here is the sample code. echo "Enter Value : \c" ; read val echo "Enter number: $val\c" ; read num Now I wanted to change the value as showing in 2nd Line or if I will use enter, it... (15 Replies)
Discussion started by: SushilAnand
15 Replies

9. Shell Programming and Scripting

Change value in a file using perl or shell script

hi, I have a local.conf file which has the first line TOPDIR = "/home/mvdev/workspace/boxer". I want to replace the value to "/home/common/workspace/mirror". I tried the following perl command that is perl -p -i -e 's/Path/path1/g' myfile.txt then sed... (7 Replies)
Discussion started by: amvarma77
7 Replies

10. Shell Programming and Scripting

Shell Script for Setting Env Variables

Hello All. Good Afternoon. I need one small help regarding setting of env variables for a particular host by getting it from the DB. For ex : 1. I am using LOCALHOST. 2. When I run a ./hostset.sh it should pick up the Oracle home details from associated DB and set it. Please... (1 Reply)
Discussion started by: PavanPatil
1 Replies

LEARN ABOUT CENTOS

pcp.conf

PCP.CONF(5)							File Formats Manual						       PCP.CONF(5)

NAME

       pcp.conf - the Performance Co-Pilot configuration and environment file

SYNOPSIS

       /etc/pcp.conf

DESCRIPTION

       When  using  Performance Co-Pilot (PCP) tools and utilities and when calling PCP library functions, a standard set of environment variables
       are defined in /etc/pcp.conf.  These variables are generally used to specify the location of various PCP pieces in the file system and  may
       be  loaded  into  shell scripts by sourcing the /etc/pcp.env(5) shell script and queried by C/C++ programs using the pmGetConfig(3) library
       function.  If a variable is already defined in the environment, the values in pcp.conf do not override those values,  i.e.  the	values	in
       pcp.conf serve as installation defaults only.

       Both  the  pcp.env  and	pcp.conf  files  are expected to be found in /etc by default.  If required, the pcp.conf file may be relocated and
       PCP_CONF set in the environment to specify the full path to the new location.  The pcp.env file can not be relocated (this is the only hard
       coded path required by PCP).

       The syntax rules for pcp.conf are as follows :

       1.  the general syntax is
						       PCP_VARIABLE_NAME=variable value to end of line

       2.  lines that begin with # and all blank lines are ignored.

       3.  all variables must be prefixed with PCP_.  This is a security issue - variables that do not have this prefix will be silently ignored.

       4.  there  should  be  no  space  between the variable name and the literal = and no space between the = and the variable value (unless the
	   value actually starts with a space).  This is required because the pcp.conf file may be sourced directly by Makefiles as well as inter-
	   preted by the pcp.env script and the pmGetConfig function.

       5.  variable  values  may  contain  spaces  and should not be quoted.  The pcp.env script automatically quotes all variable values from the
	   character immediately following the = through to the end of the line.

       For further details and an explanation of the use of each variable, see the comments in the /etc/pcp.conf file itself.

ENVIRONMENT

       The PCP_CONF environment variable specifies an alternative path to the pcp.conf file.

SEE ALSO

       PCPIntro(1), PCPIntro(3), PMAPI(3), pmGetConfig(3) and pcp.env(5).

Performance Co-Pilot							PCP							       PCP.CONF(5)
All times are GMT -4. The time now is 08:15 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy