topic "cannot open input file" with a script using the split command in Operating System - HP-UX

"cannot open input file" with a script using the split command

MAD_2 — Sat, 15 Nov 2003 18:53:58 GMT

I have createad a script using the following syntax:

split -b nm /dir/inputfile /dir/outputfile
or
split -b nk /dir/inputfile /dir/outputfile
or
split -l n /dir/inputfile /dir/outputfile

as specified by the user. The script is attached.

Problem: If I do everything manually it works fine, but while running the script I am getting the "cannot open input file"... What am I overlooking?

Thanks!

Re: "cannot open input file" with a script using the split command

James Murtagh — Sat, 15 Nov 2003 19:43:27 GMT

reboot

Re: "cannot open input file" with a script using the split command

James Murtagh — Sat, 15 Nov 2003 20:00:40 GMT

Hi there,

My upmost apologies. I leave my computer on so my flatmates can browse the internet....it seems now they cannot be trusted. I hope this hasn't discouraged your use of the forum.

If you set a shell echo in your script, i.e. run :

# ksh -x <script>

You will have a better idea where the script is failing.

Again, I am very sorry.

Regards,

James.

Re: "cannot open input file" with a script using the split command

Steven E. Protter — Sat, 15 Nov 2003 20:22:39 GMT

Jame's idea is excellent.

You might want to add tests for the existance of the file involved into your script.

if [ -f filename $filename ] stuff.

My crib sheet isn't handy right now.

reboot huh?

Sure, it was the roommates.

SEP

Re: "cannot open input file" with a script using the split command

Michael Schulte zur Sur — Sat, 15 Nov 2003 21:12:11 GMT

Hi,

you have a small error in your script.
split -b $KBSIZEk $WKDIR/$FILENAME $RESDIR/$FILENAME.
The shell evaluates the variable $KBSIZEk because it can not know, that k is not part of the variable name and of course this will
result in nothing, because it is not set.
use ${KBSIZE}k
Now the skell knows, what to evaluate.
Also the 1st line should be
#!/usr/bin/ksh

greetings,

Michael

Re: "cannot open input file" with a script using the split command

Jeroen Peereboom — Sun, 16 Nov 2003 07:41:22 GMT

L.S

Michael is completely right about the variables. Iy may be a small error, but small errors tend to be fatal for your scripts.
Your first line is wrong too, as Michael says.

You may want to add a line near the beginning:
set -u # undefined variable -> error

If the shell encounters an undefined variable, it will complain about that.

For debugging, add a 'set -xv'.

Good luck.

JP

Re: "cannot open input file" with a script using the split command

MAD_2 — Sun, 16 Nov 2003 07:49:56 GMT

Michael's response is what fixed my problem, the brackets around the variable names (like the example he used of ${KBSIZE}k instead of simply $KBSIZEk) was probably what was causing the problem, those variables and the first line of my script were the only things I changed before I tried again and then everything worked as expected.

Once again, you guys are great... Thanks!