Shell Programming with Bourne shell

test [ ]

Bourne shell constructs

source filename [arguments] or . filename [arguments]

while list do list done

for name [ in word; ] do list ; done

case word in [ pattern [ | pattern ] ... ) list ;; ] ... esac

&& logical AND

|| logical OR

{ list; } group commands

( list ) run commands in a sub-shell

trap [arg] [sigspec]

comment #

null command :

Chebucto CGI shell program standard preprocessing

Bourne shell header

!/bin/sh

Redirect error output to a file

exec 2>>/ccn/logs/test.`date +%y%m%d`

Read system variables

[ -f /etc/csuite.conf ] && . /etc/csuite.conf &&
[ -f "$CS_VARS1" ] && . $CS_VARS1 || {
echo "<h1>ERROR: could not find system variable file.</h1>"
exit 1
}

Path specification

PATH=$SYSPATH; export PATH

PATH=$CGI_PATH; export PATH

HTML header specification

echo "Content-type: text/html"
echo

# To report environment and exit

#
#[ -f $CS_CGI_LIB/cgi-env ] && . $CS_CGI_LIB/cgi-env && read line &&
#echo $line | sed 's/&/\
#/g' && exit 1

# To check remote address

#if [ -z "$REMOTE_ADDR" ]; then
# echo "<h1>ERROR: missing remote address...who are you!<h1>"
# exit 1
#fi

# to process QUERY_STRING

[ -n "QUERY_STRING" ] && eval `clean-qs "$QUERY_STRING"`

# to process form fields

if [ "$REQUEST_METHOD" = POST ] && [ "$CONTENT_LENGTH" -gt 0 ]
then
eval `dd ibs=$CONTENT_LENGTH count=1 2>/dev/null | clean-post`
fi

# for verbose error output

#set -x

Programs called: (you must be logged into CCN to see these files)

/etc/csuite.conf

/ccn/lib/vars1

clean-qs

clean-post