12-12-2008
Quote:
Originally Posted by
vasuarjula
In the mean time, if others export their own variable with the same name, will it be overwritten and dont i lose the variables value
It will not be overwritten. Variables will be available only to the session where it is declared and only for the current and sub shells
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I am trying to close of multiple users in an Oracle database. Each users has records in multiple tables what I need to do is use a script that call each SQL seperately passing either CLI arguments or gathered arguments from the users during run time.
## Accept variable(s) from the command line... (1 Reply)
Discussion started by: jagannatha
1 Replies
2. Shell Programming and Scripting
Hi...
Actually, I want to pass a few variables to the function and print it. But, its looks like not working. Could some body help me how could i do that ?... below is my program...
#!/usr/bin/ksh
usage()
{
echo "Usage: $0 -n -a -s -w -d"
exit
}
rename()
{
echo "rename $1 $2"... (5 Replies)
Discussion started by: bh_hensem
5 Replies
3. Shell Programming and Scripting
Hi!I'm trying to write a script in C that Asterisk must call: I would to pass to the script a number digited by the user, make some elaboration with it and then pass the result to Asterisk. I don't understand the mechanism used by Asterisk to pass variable to/from a script: I know that variables... (1 Reply)
Discussion started by: lucio82
1 Replies
4. Shell Programming and Scripting
I have a perl script that opens a text file containing numbers on each line:
for example:
755993
755994
755995
755996
755997
755998
The perl script takes these numbers and store them as an array @raw_data, where I can access individual numbers by using $raw_data for the value 755993.... (2 Replies)
Discussion started by: xchen89x
2 Replies
5. Shell Programming and Scripting
Hi,
I am running a Java program from a unix script. I need to pass a variable to the Java code from a file. Here are teh details:
cat Parm <<this is my Parameter file>>
queuename=queue1
and my shell script is :
#!/bin/ksh
. ./Parm
/opt/java1.5/bin/java -classpath ./java.jar... (1 Reply)
Discussion started by: sangharsh
1 Replies
6. Shell Programming and Scripting
Hi All,
How to pass the variable to s3cmd put command? I'm trying to use this command in a script as below:
s3cmd put ${upload_path} s3://${upload_dest}
where
With the above command in script, the file is not getting uploaded.
Please help!!! (4 Replies)
Discussion started by: mjavalkar
4 Replies
7. UNIX for Dummies Questions & Answers
Hi,
I have a text file as follows:
a.txt
------
STEPS=3
STEP_DURATION=100
INTERVAL=60
I want to use these values in a shell script.
How to go about this? (3 Replies)
Discussion started by: akarnya
3 Replies
8. UNIX for Dummies Questions & Answers
Dear Unix gurus,
We have a config shell script file which has 30 variables which needs to be passed to master unix shell script that invokes oracle database sessions. So those 30 variables need to go through the database sessions (They are inputs) via a shell script. one of the variable name... (1 Reply)
Discussion started by: dba1981
1 Replies
9. Shell Programming and Scripting
Dear Unix gurus,
We have a config shell script file which has 30 variables which needs to be passed to master unix shell script that invokes oracle database sessions. So those 30 variables need to go through the database sessions (They are inputs) via a shell script. one of the variable name... (1 Reply)
Discussion started by: dba1981
1 Replies
10. UNIX for Dummies Questions & Answers
Below are three variables, which I want to pass into variable RESULT1
username1=userid
poihostname1=dellsys.com
port1=8080
How can I pass these variables into below code...
RESULT1=$((ssh -n username1@poihostname1 time /usr/sfw/bin/wget --user=sam --password=123 -O /dev/null -q... (4 Replies)
Discussion started by: manohar2013
4 Replies
EXPORT(P) POSIX Programmer's Manual EXPORT(P)
NAME
export - set the export attribute for variables
SYNOPSIS
export name[=word]...
export -p
DESCRIPTION
The shell shall give the export attribute to the variables corresponding to the specified names, which shall cause them to be in the envi-
ronment of subsequently executed commands. If the name of a variable is followed by = word, then the value of that variable shall be set to
word.
The export special built-in shall support the Base Definitions volume of IEEE Std 1003.1-2001, Section 12.2, Utility Syntax Guidelines.
When -p is specified, export shall write to the standard output the names and values of all exported variables, in the following format:
"export %s=%s
", <name>, <value>
if name is set, and:
"export %s
", <name>
if name is unset.
The shell shall format the output, including the proper use of quoting, so that it is suitable for reinput to the shell as commands that
achieve the same exporting results, except:
1. Read-only variables with values cannot be reset.
2. Variables that were unset at the time they were output need not be reset to the unset state if a value is assigned to the variable
between the time the state was saved and the time at which the saved output is reinput to the shell.
When no arguments are given, the results are unspecified.
OPTIONS
See the DESCRIPTION.
OPERANDS
See the DESCRIPTION.
STDIN
Not used.
INPUT FILES
None.
ENVIRONMENT VARIABLES
None.
ASYNCHRONOUS EVENTS
Default.
STDOUT
See the DESCRIPTION.
STDERR
The standard error shall be used only for diagnostic messages.
OUTPUT FILES
None.
EXTENDED DESCRIPTION
None.
EXIT STATUS
Zero.
CONSEQUENCES OF ERRORS
Default.
The following sections are informative.
APPLICATION USAGE
None.
EXAMPLES
Export PWD and HOME variables:
export PWD HOME
Set and export the PATH variable:
export PATH=/local/bin:$PATH
Save and restore all exported variables:
export -p > temp-fileunset a lot of variables... processing. temp-file
RATIONALE
Some historical shells use the no-argument case as the functional equivalent of what is required here with -p. This feature was left
unspecified because it is not historical practice in all shells, and some scripts may rely on the now-unspecified results on their imple-
mentations. Attempts to specify the -p output as the default case were unsuccessful in achieving consensus. The -p option was added to
allow portable access to the values that can be saved and then later restored using; for example, a dot script.
FUTURE DIRECTIONS
None.
SEE ALSO
Special Built-In Utilities
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE
and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained
online at http://www.opengroup.org/unix/online.html .
IEEE
/The Open Group 2003 EXPORT(P)