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Top Forums Shell Programming and Scripting Ksh: Test UNIX command without $? everytime Post 302883470 by maverick72 on Tuesday 14th of January 2014 11:07:39 AM
Old 01-14-2014
Ksh: Test UNIX command without $? everytime

Hello all,

working on Solaris 10 in ksh.

Basicly, in my function, i'm trying to test that all my unix cmd's are true (exit status 0) else you flag the rcControlRule to 1 without going into spagetti mode code testing every $? in a if statement.

The mdb is probably a little tricky cause it will give something like this:

Code:
# echo ―noexec_user_stack/D‖ | mdb -k
noexec_user_stack:
noexec_user_stack: 1

And i'm looking for something like this:

Code:
# echo ―noexec_user_stack/D‖ | mdb -k
noexec_user_stack:
noexec_user_stack: 0

Bottom line i just want to know how you guys evaluate unix command without testing $? everytime... there must be a simpler way. A best practice somewhere that i miss.

Bellow code doesn't work but basicly explain what i'm trying to do.
Code:
CONFIG_FILE="/etc/system"
STACK=$(grep -q "^set noexec_user_stack=1" ${CONFIG_FILE})
STACK_LOG=$(grep -q "^set noexec_user_stack_log=1" ${CONFIG_FILE})
MDB=$(echo "noexec_user_stack/D" | mdb -k)

check_config () {
        if [[ ${STACK} -a ${STACK_LOG} -a ${MDB} ]]; then
                rcControlRule=0
        else
                rcControlRule=1
        fi
        return ${rcControlRule}
}

Maybe i should use something like:

Code:
set -A services "grep -q \"^set noexec_user_stack=1\" ${CONFIG_FILE}" "grep -q \"^set noexec_user_stack_log=1\" ${CONFIG_FILE}" "echo \"noexec_user_stack/D\" | mdb -k"

check_service () {
        i=0
        while [[ $i -lt "${#services[@]}" ]] && [[ rcControlRule -ne 1 ]]; do
                if  ! "${services[$i]}"  > /dev/null 2>&1; then
                        rcControlRule=1
                else
                        rcControlRule=0
                fi
        (( i+=1 ))
        done
        return ${rcControlRule}
}

Thanks.

Eric
 

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ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME
zgrep - search possibly compressed files for a regular expression SYNOPSIS
zgrep [ grep_options ] [ -e ] pattern filename... DESCRIPTION
Zgrep invokes grep on compressed or gzipped files. These grep options will cause zgrep to terminate with an error code: (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*). All other options specified are passed directly to grep. If no file is specified, then the standard input is decompressed if necessary and fed to grep. Otherwise the given files are uncompressed if necessary and fed to grep. If the GREP environment variable is set, zgrep uses it as the grep program to be invoked. EXIT CODE
2 - An option that is not supported was specified. AUTHOR
Charles Levert (charles@comm.polymtl.ca) SEE ALSO
grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1) ZGREP(1)
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