[ILUG] Bash

[Sean]

John Tobin wrote something:
{ On Mon, Jan 21, 2002 at 05:43:34PM +0000, Brendan Halpin wrote:
{ ? Simple scripting question:
{ ? 
{ ? With a bash script that runs a simple series of commands, how do I
{ ? make it crash out if any one command fails, without filling it with
{ ? conditionals?
{ ? 
{ ? Pardon the ignorance, but I shell script too infrequently to
{ ? accumulate knowledge.
{ 
{ set -e
{ >From the bash manpage:
{ 
{ Exit immediately if a simple command (see SHELL GRAMMAR above) exits
{ with a non-zero status. The shell does not exit if the command that
{ fails is part of an until or while loop, part of an if statement, part
{ of a && or || list, or if the command's return value is being inverted
{ via !.
{ 
{ ? 
{ ? Brendan
{ ? 
{ 


  If you yourself want to do the error checking, then after each command
  check the $? variable.  It's the status of the last command.  If it's
  non-zero then the last command had a error/problem of some kind.
 
  Can help recover from an error rather than simply exit on error...

{ -- 
{ John
{ "That would preempt a bunch of problems involved in trying to reconstruct
{ exactly how the Perl 5 parser thinks, which nobody entirely understands."
{ 			Larry Wall, 2001/04/20, perl6-language at perl.org
{ "Finger to spiritual emptiness underlying everything." -- How a Japanese C
{ manual referred to a "pointer to void".
{ 
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