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Full Discussion: error checking in bash
Top Forums Shell Programming and Scripting error checking in bash Post 302075725 by gubten on Tuesday 6th of June 2006 11:50:57 AM
Old 06-06-2006
error checking in bash

Could someone please advise on a good way to implement error checking in a script?
i am taking input from a file, iserting it's values into two commands and sending the output of each to seperate log files. i need to check those log files for for an occurance of 'error', stop the command if 'error' exists,. if it does not, then continue to next command. i have this so far....using mkdir for testing purposes.
...exerpt
for COMPONENT in `cat $1|awk '{print $1, $2}'`
do
printf "\n \n Creating components for $COMPONENT \n"
mkdir $COMPONENT >> ~/scripts/$COMPONENTERROR 2>&1
if grep error $COMPONENTERROR ! 1 || { echo "check error log"; exit 1; } fi

printf "Creating Island $2 \n"
mkdir $2 >> ~/scripts/$ISLANDERROR 2>&1
#if [stop_this -eq 1] then exit "STOP" else
#fi
done
....
or should i take another approach?
 

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explain_mkdir_or_die(3) 				     Library Functions Manual					   explain_mkdir_or_die(3)

NAME
explain_mkdir_or_die - create a directory and report errors SYNOPSIS
#include <libexplain/mkdir.h> void explain_mkdir_or_die(const char *pathname); DESCRIPTION
The explain_mkdir_or_die function is used to call the mkdir(2) system call. On failure an explanation will be printed to stderr, obtained from explain_mkdir(3), and then the process terminates by calling exit(EXIT_FAILURE). This function is intended to be used in a fashion similar to the following example: explain_mkdir_or_die(pathname); pathname The pathname, exactly as to be passed to the mkdir(2) system call. Returns: This function only returns on success. On failure, prints an explanation and exits. SEE ALSO
mkdir(2) create a directory explain_mkdir(3) explain mkdir(2) errors exit(2) terminate the calling process COPYRIGHT
libexplain version 0.52 Copyright (C) 2008 Peter Miller explain_mkdir_or_die(3)
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