run a c.sh script line by line

kenn_rosie@msn.com · 10-16-2006, 10:29 AM

I would like to run a simple c.sh script line by line to test each line... is that possible?

crep · 10-16-2006, 11:52 AM

no, because some line (in loops etc) are dependant on previous lines in the file. feel free to try it to see what i mean.

jyoung4 · 10-16-2006, 01:22 PM

(I'm assuming that when you said you wanted to run a c.sh script you meant a C shell script)

I don't know of any way to run it line by line but ...

You can turn on the x and v options to have it display what it's executing after expanding any wild card characters like "*" and what the results were. To do this start the script like this:

csh -xv /home/jay/myscript.csh arg1 arg2

If you get a lot of output from this, you may want to redirect it to a file.

makyo · 10-16-2006, 02:52 PM

Hi.

As my neighbor jyoung4 from across the river says, "-vx" is about all you can do easily. You can be more more precise by setting and unsetting the echo and verbose variables so that you don't need to slog through a lot of output. See man csh for information (but it's just:

Code:

set echo
set verbose

commands-to-be-echoed-before-and-after-history-and-execution

unset echo
unset verbose

so there isn't much more to it.)

If you are really ambitious, the O'Reilly Learning the bash Shell book has a chapter on writing a script debugger. Of course, you'd need to make a lot of changes. It does breakpoints, steps, etc., all the stuff you might want to do.

Some people, perhaps most, feel that csh-related shells are not suitable for scripting. There are many drawbacks -- see this, but sometimes we just need to get a job done.

Best wishes ... cheers, makyo