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Full Discussion: Bash script errors when executing
Top Forums Shell Programming and Scripting Bash script errors when executing Post 302637387 by chihung on Tuesday 8th of May 2012 08:09:40 PM
Old 05-08-2012
It will be hard for anyone to help you with this long script. What I can propose to you is to run it with "bash -x yourscript" to get the shell to print out the commands while it is executing.

You may try to set the PS4 variable to something that is easy for you to debug your script.

Here is a little example. Hope it helps:
Code:
$ export PS4="
--->DEBUG: "

$ cat a.sh
#! /bin/bash

echo Hello World
date
cal

$ bash -x a.sh

--->DEBUG: echo Hello World
Hello World

--->DEBUG: date
Wed May  9 08:08:22 SGT 2012

--->DEBUG: cal
      May 2012
Su Mo Tu We Th Fr Sa
       1  2  3  4  5
 6  7  8  9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30 31

This User Gave Thanks to chihung For This Post:
sea
 

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LEARN ABOUT LINUX

service

service(8)						      System Manager's Manual							service(8)

NAME

       service - run a System V init script

SYNOPSIS

       service SCRIPT COMMAND [OPTIONS]

       service --status-all

       service --help | -h | --version

DESCRIPTION

       service runs a System V init script in as predictable environment as possible, removing most environment variables and with current working
       directory set to /.

       The SCRIPT parameter specifies a System V init script, located in /etc/init.d/SCRIPT.  The  supported  values  of  COMMAND  depend  on  the
       invoked	script,  service  passes  COMMAND and OPTIONS it to the init script unmodified.  All scripts should support at least the start and
       stop commands.  As a special case, if COMMAND is --full-restart, the script is run twice, first with the stop command, then with the  start
       command.

       service --status-all runs all init scripts, in alphabetical order, with the status command.

EXIT CODES

       service calls the init script and returns the status returned by it.

FILES

       /etc/init.d
	      The directory containing System V init scripts.

ENVIRONMENT

       LANG, TERM
	      The only environment variables passed to the init scripts.

SEE ALSO

       /etc/init.d/skeleton,
       update-rc.d(8),
       init(8),
       invoke-rc.d(8).

								     Jan 2006								service(8)
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