Shell Programming and Scripting

Hi,

I have a script which invokes another script inside. Is there any way I can validate the script for syntax errors as well as checking if the files mentioned in the commands exist without executing it? Below is an example

Example.

=======================
Script1

#ksh

echo "Start of script"

. script2

echo 'end of script'


=====================
Script2

echo "control in script2"
cp fileold filenew
cat filenew >> filect
cp filect
echo "end of script2"
=====================

There is no full-coverage syntax checker for ksh. The closest is probably shcomp which builds and saves the internal parser tree if no errors are encountered.

Thank you very much. Please let me know if it can be possible in any other shells..

Successively applying

Code:

[ -f <FileName> ]

option of the test command will test whether the files in question exist or not.

In your case
fileold must not exist,
filenew should not exist and so on.

You might then change script2 to something like:
Script2

Code:

echo "control in script2"
if [-f filenew ] then
echo filenew already exist.
exit
fi
cp fileold filenew
cat filenew >> filect
cp filect
echo "end of script2"

=====================