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Full Discussion: Terminate initially if error found...
Top Forums Shell Programming and Scripting Terminate initially if error found... Post 302488529 by m.d.ludwig on Monday 17th of January 2011 02:47:49 PM
Old 01-17-2011
From the bash manpage:
set [--abefhkmnptuvxBCEHPT] [-o option] [arg ...]
set [+abefhkmnptuvxBCEHPT] [+o option] [arg ...]
-e
Exit immediately if a pipeline (which may consist of a single simple command), a subshell command enclosed in parentheses, or one of the commands executed as part of a command list enclosed by braces (see SHELL GRAMMAR above) exits with a non-zero status. The shell does not exit if the command that fails is part of the command list immediately following a while or until keyword, part of the test following the if or elif reserved words, part of any command executed in a && or ││ list except the command following the final && or ││, any command in a pipeline but the last, or if the command's return value is being inverted with !. A trap on ERR, if set, is executed before the shell exits. This option applies to the shell environment and each subshell envi- ronment separately (see COMMAND EXECUTION ENVIRONMENT above), and may cause subshells to exit before executing all the commands in the subshell.
So the set -e causes the sub-shell to exit if any command exits with a non-zero status. Each sub-script is executed in order, the execution just stops when one fails.

You could have also done:
Code:
Script1.sh || Script2.sh || Script3.sh || Script4.sh || Script5.sh

rc=$?
.....

instead of the sub-shell. Up to you which implementation works best for you.

Now if you want to have per-script error processing, then you are going to have to do something like:
Code:
Script1.sh

rc=$?
case ${rc} in
  0) rc0script1stuff ;;
  2) rc2script1stuff ; exit ${rc} ;;
  4) rc4script1stuff ; exit ${rc} ;;
  *) echo Script1 has an undefined exit code - ${rc} ; exit ${rc} ;;
esac

Script2.sh

rc=$?
case ${rc} in
  0) rc0script2stuff ;;
  2) rc2script2stuff ; exit ${rc} ;;
  4) rc4script2stuff ; exit ${rc} ;;
  *) echo Script2 has an undefined exit code - ${rc} ; exit ${rc} ;;
esac

..... and so on .....

 

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LEARN ABOUT OSF1

uudemon.cleanu

uudemon(4)						     Kernel Interfaces Manual							uudemon(4)

NAME

       uudemon.admin,  uudemon.cleanu,	uudemon.hour,  uudemon.poll  -	Administrative shell scripts for polling remote systems, cleaning up spool
       directories, reporting status to the system administrator, and routine invocations of the uuxqt and uusched daemons

SYNOPSIS

       These shell scripts reside in the following directory:
	  /usr/lib/uucp

DESCRIPTION

       All the scripts can be run from the command line or can be run automatically by the cron daemon. To automatically run the  scripts,  remove
       the comment character (#) from the beginning of the relevant line in the /var/spool/cron/crontabs/uucp file.

       This  script  reports  status  to  the system administrator. It issues the uustat command to find out the status of uucp jobs. It mails the
       results to the uucp login ID. The script may be modified to send mail to any login ID such as the uucp administrative login ID  (uucpa)	or
       root.  This script cleans up the /var/spool/uucp and /var/spool/uucppublic directories by running the uucleanup command. The uucleanup com-
       mand is run with the following parameters: -C7, -D7, X2, -o2, -W1.  This script runs the uusched and uuxqt daemons in the background.  This
       script  polls  the  systems  listed  in	the  /usr/lib/uucp/Poll file.  The uudemon.poll script should be scheduled before the uudemon.hour
       script. This allows uudemon.poll to create any command files before cron runs the uudemon.hour script.

FILES

       Contains the uudemon.admin, uudemon.cleanu, uudemon.hour and uudemon.poll files.  Contains the uucp file.

RELATED INFORMATION

       Commands: cron(8), uucleanup(8), uusched(8), uuxqt(1)

       Files: /usr/lib/uucp delim off

																	uudemon(4)
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