|
|
Sponsored Content
Top Forums
UNIX for Advanced & Expert Users
Setting global variables with BASH/Linux
Post 302260329 by gregf on Thursday 20th of November 2008 08:44:24 AM
11-20-2008
Setting global variables with BASH/Linux
I am using functions in a script and for some strange reason the EXPORT command doesnt seem to be making my variables global.
Anyone got any ideas?
I am using one function to pass some output top another using the pipe command, eg
Function 1 | Function 2
Function 2 reads the value passed from Function one and sets some variables based on its value then exports them
setStartSeq() {
read logFile
echo "Start redo log: $logFile"
arcPrefix=$(echo $logFile | cut -d_ -f1)"_"$(echo $logFile | cut -d_ -f2)
startSeq=$(echo $logFile | cut -d_ -f3 | cut -d. -f1)
export arcPrefix=$arcPrefix
export startSeq=$startSeq
}
Yet later on in the script another function tries to use the above exported variables and they arent set!!
I have confirmed that by running an export -p in the later function and all values set above are blank.
I am new to BASH and Linux but have used export without issue with kornshell.
Any help would be greatly appreciated
Anyone got any ideas?
I am using one function to pass some output top another using the pipe command, eg
Function 1 | Function 2
Function 2 reads the value passed from Function one and sets some variables based on its value then exports them
setStartSeq() {
read logFile
echo "Start redo log: $logFile"
arcPrefix=$(echo $logFile | cut -d_ -f1)"_"$(echo $logFile | cut -d_ -f2)
startSeq=$(echo $logFile | cut -d_ -f3 | cut -d. -f1)
export arcPrefix=$arcPrefix
export startSeq=$startSeq
}
Yet later on in the script another function tries to use the above exported variables and they arent set!!
I have confirmed that by running an export -p in the later function and all values set above are blank.
I am new to BASH and Linux but have used export without issue with kornshell.
Any help would be greatly appreciated
|
|
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I am using Solaris 8 and I want to change the PATH setting for all users. I have edited /etc/profile, but when I log in and check the PATH variable, it hasn't changed.
Am I missing something? (5 Replies)
Discussion started by: jxh
5 Replies
2. UNIX for Dummies Questions & Answers
hi,
i am a newbie unix administrator. i want to set a variable, let's say :
alias cls 'clear'
But i am not going to add this line in the .login file for every home directory of my 500+ users.
pls tell me where should i put this line in, so that all users can use this variable after... (4 Replies)
Discussion started by: champion
4 Replies
3. Shell Programming and Scripting
Can someone give me "the lecture" on why you shouldn't make all your varables global when programming in perl. I have been doing this but I have heard that it is not a good practice. (3 Replies)
Discussion started by: reggiej
3 Replies
4. UNIX for Dummies Questions & Answers
Hi All,
I know to set global variable i can use export .. But take the situation like below ..
I want to set a variable in one script and access that in second script
i have done like this .. It is not working
one.sh
#!/usr/bin/ksh
echo $RISSHI
export RISSHI=1
two.sh... (3 Replies)
Discussion started by: arunkumar_mca
3 Replies
5. UNIX for Dummies Questions & Answers
Hi,
I hav created a script that calls a sub-script. In both the scripts i called the configuration file. Now i wanted to use a variable that should be used in both script and sub-script files. Actually, i wanted to return a file name and the return status to the script file from the sub-script.... (6 Replies)
Discussion started by: Swapna173
6 Replies
6. Solaris
Hi Guys,
My requirement is I have file called /opt/orahome/.profile in non global zone.
PATH=/usr/bin:/usr/ucb:/etc:/usr/sbin:/usr/local/bin:/usr/openwin/bin:.
export PATH
PS1="\${ORACLE_SID}:`hostname`:\$PWD$ "
export PS1
EDITOR=vi
export EDITOR
ENV=/opt/orahome/.kshrc
export ENV... (1 Reply)
Discussion started by: vijaysachin
1 Replies
7. UNIX for Advanced & Expert Users
Is there anyway in which i can set a permanent global variable in unix, which when initialised with a value and modified during any shell script, would retain its value even if i logout and login
I dont know whether i am being able to express my need clearly but basically what i want is a... (3 Replies)
Discussion started by: arindamlive
3 Replies
8. UNIX for Dummies Questions & Answers
hi all,
i need a help for the following query.
Thanks in advance for your valuable time.
i have a main.pl file which has a global variable declared as below.
our myVar=0;
call first.pl script from the main.pl script.
print the value of myVar (the value is still 0 and not 10.)
i have a... (1 Reply)
Discussion started by: hemalathak10
1 Replies
9. Shell Programming and Scripting
Hi all,
I want to dynamically set variables in a bash script. I made a naive attempt in a while loop that hopefully can clarify the idea.
n=0; echo "$lst" | while read p; do n=$(($n+1)); p"$n"="$p"; done
The error message is:
bash: p1=line1: command not found
bash: p2=line2: command... (8 Replies)
Discussion started by: jeppe83
8 Replies
10. Shell Programming and Scripting
I have a variable I want to use in bash script. The user will pass an argument
to the script and I will store it in `arg_fql`. If the user does not pass the variable,
I still never set arg_fql, but I set another variable to a default. However, if the user
passes a value, `arg_fql` will be set to... (2 Replies)
Discussion started by: kristinu
2 Replies
LEARN ABOUT DEBIAN
storebackupupdatebackup
STOREBACKUPUPDATEBACKUP(1) User Contributed Perl Documentation STOREBACKUPUPDATEBACKUP(1) NAME
storeBackupUpdateBackup.pl - updates / finalizes backups created by storeBackup.pl with option --lateLink, --lateCompress SYNOPSIS
storeBackupUpdateBackup.pl -b backupDirectory [--autorepair] [--print] [--verbose] [--debug] [--lockFile] [--noCompress] [--progressReport number] [--checkOnly] [--logFile [--suppressTime] [-m maxFilelen] [[-n noOfOldFiles] | [--saveLogs]] [--compressWith compressprog]] storeBackupUpdateBackup.pl --interactive --backupDir topLevlDir [--autorepair] [--print] WARNING
!!! USAGE IN PARALLEL WITH storeBackup.pl CAN DESTROY YOUR BACKUPS !!! OPTIONS
--interactive, -i interactive mode for reparing / deleting currupted backups created with option '--lateLinks' --backupDir, -b top level directory of all backups (must exist) --autorepair, -a repair simple inconsistencies automatically without requesting the action --print print configuration read from configuration file and stop --verbose, -v verbose messages --debug, -d generate detailed information about the files with the linking information in it --lockFile, -L lock file, if exist, new instances will finish if an old is already running If set to the same file as in storeBackup it will prevent $prog from running in parallel to storeBackup, default is $lockFile --noCompress maximal number of parallel compress operations, default = chosen automatically --checkOnly -c do not perform any action, only check consistency --progressReport print progress report: after each 'number' files when compressing after each 'number * 1000' files when linking after each 'number * 10000' files when performing chmod --logFile, -l logFile, Default: stdout --suppressTime suppress output of time in logfile --maxFilelen, -m maximal length of log file, default = 1e6 --noOfOldFiles, -n number of old log files, default = 5 --saveLogs save log files with date and time instead of deleting the old (with [-noOldFiles]) --compressWith compress saved log files (e.g. with 'gzip -9'). default is 'bzip2' COPYRIGHT
Copyright (c) 2008,2012 by Heinz-Josef Claes. Published under the GNU General Public License v3 or any later version perl v5.14.2 2012-06-16 STOREBACKUPUPDATEBACKUP(1)