Validate BASH script before running it...


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Validate BASH script before running it...
# 1  
Old 12-23-2009
Validate BASH script before running it...

Hello,
Is there some way to validate a bash script before running it. I want to make sure all of the syntax and everything is good so that I dont get a false return code.

Thanks,
tom
# 2  
Old 12-23-2009
Code:
bash -n /path/to/script

# 3  
Old 12-23-2009
Hello,
Another smart way is to set a debugger like
Code:
set -x

in your code at the beginning. and step through the exectution.
Regards
# 4  
Old 12-25-2009
Quote:
Originally Posted by gaurav1086
Another smart way is to set a debugger like
Code:
set -x

in your code at the beginning. and step through the exectution.

set -x does run the code; that's not what the OP asked for.
# 5  
Old 12-25-2009
Quote:
Originally Posted by cfajohnson

set -x does run the code; that's not what the OP asked for.
Hello sir, cfajohnson
He said to validate, that could show where he could find it going wrong through stepping through the execution. That was merely another way to go through it.

Regards.
Merry Christmas
# 6  
Old 12-25-2009
Quote:
Originally Posted by gaurav1086
He said to validate, that could show where he could find it going wrong through stepping through the execution. That was merely another way to go through it.

What he asked for was to "validate a bash script before running it". To do that, bash -n (or set -n) is needed; set -x prints what is being run.
# 7  
Old 12-25-2009
You win .
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Running nmap via bash script

Hello fellow scripters... I am trying to set up a script for work that reads the contents of a file of IP address and network names, takes these and runs a given nmap scan against them and then saves the output to a file with the filename of the network name. Such as... IP file looks like... (4 Replies)
Discussion started by: hawkeyesc72
4 Replies

2. Shell Programming and Scripting

Running options in bash script

Hello UNIX & Linux Forums community! Long time Linux daily user hobbyist, new to shell scripting.... I'm working on a script that does all the "work" in one script, and makes calls to a second script to display info to the user via mostly expanding variables in heredocs. I'm contemplating... (6 Replies)
Discussion started by: Cody Learner
6 Replies

3. Shell Programming and Scripting

Bash shell script to check if script itself is running

hi guys we've had nagios spewing false alarm (for the umpteenth time) and finally the customer had enough so they're starting to question nagios. we had the check interval increased from 5 minutes to 2 minutes, but that's just temporary solution. I'm thinking of implementing a script on the... (8 Replies)
Discussion started by: hedkandi
8 Replies

4. Shell Programming and Scripting

script running by sh but not by bash

execute the attached script as, bash -x INFA_MAP_GEN_XML.sh "/export/home/e120945/INFORMATICA_MAPPING_GENERATOR/SOURCE" "INFA_TEMPLATE.csv" "/export/home/e120945/INFORMATICA_MAPPING_GENERATOR/TARGET" "UNIX" "/export/home/e120945/INFORMATICA_MAPPING_GENERATOR/SETUP"... (5 Replies)
Discussion started by: 120945
5 Replies

5. UNIX for Dummies Questions & Answers

Help Running a Check in Bash Script

Hey guys, so I wrote a small script that pretty much just takes in two numbers and counts from the first to the second, e.g. unknown-hacker|544> count.sh 1 3 1 2 3 My problem is I want to make it so that if you input invalid parameters, such as non-numerical characters, more than 2... (2 Replies)
Discussion started by: Duo11
2 Replies

6. UNIX for Dummies Questions & Answers

Running Executable in Bash Script

Hey guys, so I've been trying to write a bash script called runSorter.sh that runs an executable that also takes in some parameters and outputs the results to a text file. The executable, sorter, takes in a number parameter. I want to make it so that you can input as many number parameters into... (4 Replies)
Discussion started by: Duo11
4 Replies

7. UNIX for Dummies Questions & Answers

BASH validate user input

Hey, im trying to validate a user input and need some help. The input needs to be just a single letter. Im using a case to so this eg: read answer case $answer in *) echo "OK" ;; *) echo "This is a number" read answer ;; *) echo... (2 Replies)
Discussion started by: 602chrislys
2 Replies

8. Shell Programming and Scripting

Script running in bash 3.0 not in 3.2

I have wasted one working day writing this scripts. It compares two folders and make a good tabbed report about their differences. #!/bin/bash function DRAW_DEPTH () { ROUND=$1 while do printf %s " " ROUND=`expr $ROUND - 1` done printf %s "|- " } function MAIN () {... (9 Replies)
Discussion started by: trutoman
9 Replies

9. UNIX for Advanced & Expert Users

debugging an already running bash script

# ps -ef | grep rc root 13903 1 0 08:56 ? 00:00:00 /usr/sbin/automount --timeout=60 /archive file /etc/auto_archive root 10706 1 0 08:55 ? 00:00:00 /bin/bash /etc/rc.d/rc 3 root 2933 20071 0 19:38 pts/1 00:00:00 grep rc Is there any way to debug the... (1 Reply)
Discussion started by: marcpascual
1 Replies

10. Linux

Cannot running export database using bash script

Hi all, I'm new in linux. When I try to run a bash script, it doesn't execute and i receive the following error message 20070321:220002|ERROR||exportDatabase.bash|Another EXPORT process (pid=2799) is still running. If i kill this pid, i receive "No such process". This process was running... (5 Replies)
Discussion started by: tovohery
5 Replies
Login or Register to Ask a Question