Sponsored Content
Top Forums Shell Programming and Scripting Running shell script in parallel Post 302393401 by jamjam10k on Monday 8th of February 2010 04:27:30 PM
Old 02-08-2010
Running shell script in parallel

Hi,
I am a shell script which takes input parameters and performs various functions. My concern is, if we call the same shell script with different parameter values from different sessions, will the results be inconsistent?
Are there any precautions I need to take inorder to avoid conflicts between several instances of the same script?
Is there any limitation on the number of parallel instances you can create for a shell script?
BTW, I am using bash.

Thanks
 

10 More Discussions You Might Find Interesting

1. Programming

running a parallel program

hi , i need to run a parallel program . for example; program1 { array=" the second program should called here : program 2" the execution should continue } the 2nd program should recieve an array of information as argument and it should... (4 Replies)
Discussion started by: bankpro
4 Replies

2. IP Networking

running servers parallel

I'm going to undertake a hardware refresh soon and I was wondering if it is possible to run two machines (X and Y) with the same hostname (but different IP addresses) on the same network? Server X is the original server and has an entry in DNS. Server Y is the new server and won't have an entry... (1 Reply)
Discussion started by: soliberus
1 Replies

3. Shell Programming and Scripting

Help with executing parallel sessions for same shell script with different but fixed parameters

Hi Experts, There is a shell script that accepts positional parameter between 1-25 to execute case statement of script depending upon the parameter passed. Now I need to run all the 25 sessions parallely. In each option of case statement it is connecting with sqlplus and executing a select... (11 Replies)
Discussion started by: Opamps123
11 Replies

4. Shell Programming and Scripting

Running jobs in parallel

I need to process 50 sqlplus scripts which are listed in a text file. I need to develop a shell script that'll read this file and run these sqlplus scripts. At any point of time, the number of sqlplus scripts running shouldn't exceed 6. If any of the sqlplus scripts completes successfully then... (17 Replies)
Discussion started by: gctex
17 Replies

5. UNIX for Dummies Questions & Answers

Running parallel process

i am having 4 process,have to run parallel and not after one by one. sample1.sh sample2.sh sample3.sh sample4.sh Thanks in advance. i (11 Replies)
Discussion started by: sagar_1986
11 Replies

6. Shell Programming and Scripting

Parallel SQL sessions in shell script

i have 3 sqls , sql 1 and sql 2 shuld run in parallel , but sql 3 should run after completion f sql1 nd sql2, my code is as below, please suggest the changes sqlplus username1/password1@DB1 @sql >> log1 & sqlplus username2/password2@DB2 @sql2 >> log1 & how can i execute the... (7 Replies)
Discussion started by: only4satish
7 Replies

7. Shell Programming and Scripting

Script running in parallel failing!

Hi, I have a single script that was running fine in parallel on Linux 2.6.9-89 now it has been upgraded to Linux 2.6.18-308.24.1.el5 and the script has started to fail unpredictably. Is this an upgrade issue? As the script runs fine for some parallel threads while fails for others. Please... (4 Replies)
Discussion started by: Panna
4 Replies

8. Shell Programming and Scripting

Running script in Parallel

Hi Folks I have a doubt. I have a script which is running with 2 input parameters ./GetDSLnkCount.sh <jobnumber> Parmfile.txt I need to run the script in parallel for different jobnumbers. The commands are ./GetDSLnkCount.sh jnhuc14500 Parmfile.txt ./GetDSLnkCount.sh jnhuc14501... (3 Replies)
Discussion started by: morbid_angel
3 Replies

9. Shell Programming and Scripting

Running 3 shell script parallel in another shell script

Hi, I'm trying to do teh below thing. I have a single script which uses 3 different parameters to do 3 different work like belwo. test1.sh par1 -- it shuts down an instance test1.sh par2 -- it shuts down an instance test1.sh par3 -- it shuts down an instance Now I created a script... (7 Replies)
Discussion started by: bhaski2012
7 Replies

10. Shell Programming and Scripting

Parallel for in a Script Shell

Hello, This is my Script which configure a list of nodes. ( 40 nodes, and the configuration 10 minutes) #! /bin/sh if then echo "USE: ./start.sh nodes else nb_lignes=`wc -l $1 | cut -d " " -f1` echo "$nb_lignes machines" for i in $(seq $nb_lignes) //instructions done fi My... (2 Replies)
Discussion started by: chercheur111
2 Replies
exit(1) 							   User Commands							   exit(1)

NAME
exit, return, goto - shell built-in functions to enable the execution of the shell to advance beyond its sequence of steps SYNOPSIS
sh exit [n] return [n] csh exit [ ( expr )] goto label ksh *exit [n] *return [n] DESCRIPTION
sh exit will cause the calling shell or shell script to exit with the exit status specified by n. If n is omitted the exit status is that of the last command executed (an EOF will also cause the shell to exit.) return causes a function to exit with the return value specified by n. If n is omitted, the return status is that of the last command exe- cuted. csh exit will cause the calling shell or shell script to exit, either with the value of the status variable or with the value specified by the expression expr. The goto built-in uses a specified label as a search string amongst commands. The shell rewinds its input as much as possible and searches for a line of the form label: possibly preceded by space or tab characters. Execution continues after the indicated line. It is an error to jump to a label that occurs between a while or for built-in command and its corresponding end. ksh exit will cause the calling shell or shell script to exit with the exit status specified by n. The value will be the least significant 8 bits of the specified status. If n is omitted then the exit status is that of the last command executed. When exit occurs when executing a trap, the last command refers to the command that executed before the trap was invoked. An end-of-file will also cause the shell to exit except for a shell which has the ignoreeof option (See set below) turned on. return causes a shell function or '.' script to return to the invoking script with the return status specified by n. The value will be the least significant 8 bits of the specified status. If n is omitted then the return status is that of the last command executed. If return is invoked while not in a function or a '.' script, then it is the same as an exit. On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways: 1. Variable assignment lists preceding the command remain in effect when the command completes. 2. I/O redirections are processed after variable assignments. 3. Errors cause a script that contains them to abort. 4. Words, following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a vari- able assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation are not performed. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
break(1), csh(1), ksh(1), sh(1), attributes(5) SunOS 5.10 15 Apr 1994 exit(1)
All times are GMT -4. The time now is 01:38 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy