Problem with running bash script on open terminal window!

gnome1919 · 07-14-2014, 02:29 PM

Hi,
I wrote a bash scrip that download files from internet and then run a software called Wavewatch to do some process using downloaded files. The problem is that when I run the script using crontab (which runs in background without any open terminal window), everything goes well, but when I run the command manually in a Terminal window, a software module (called ww3_outp) returns an error complaining about writing problem of /dev/pts/0 looks like this:

Code:

forrtl: severe (38): error during write, unit 6, file /dev/pts/0
Image              PC                Routine            Line        Source             
ww3_outp           00000000004AFEDB  Unknown               Unknown  Unknown
ww3_outp           0000000000408A6A  Unknown               Unknown  Unknown
ww3_outp           0000000000408236  Unknown               Unknown  Unknown
libc.so.6          000000347D81ED1D  Unknown               Unknown  Unknown
ww3_outp           0000000000408129  Unknown               Unknown  Unknown

I looked to /dev/pts/ and found that with each instance of Terminal window a file named by a number (0,1,2,...) is produced which can't be edited or deleted even with root permission. It seems so weird, any idea?

rtmistler · 07-15-2014, 07:53 AM

Hard to figure what exactly the problem is without seeing your script. Also can you show a long listing of these directories which have their permissions screwed up?

Please post your script as well as a long listing of your /etc/pts directory within [code][/code] tags.

If you'd rather self analyze:

Sounds sort of like Wave Watch III uses that directory for writing information, be that logs or data. It may be that when you run it as a cron that user permissions are one thing and when you run it directly from a terminal program that the user permissions are your login and that there's a conflict.

Something to do is to echo the environment information to a log file from within your script that's running ww-iii.

Code:

env >> /home/<your-user>/logfile.txt;

And finally check the permissions and ownership for your /etc/pts directory; that's not a normal system directory as far as I know, therefore it may have been created by the ww-iii program; and again it may have been given ownership and credentials via the cron job; and be something which doesn't allow other users to access it.

gnome1919 · 07-15-2014, 08:02 AM

Thanks for your reply rtmistler,

I found another post related to my question, let us continue this discussion there.
Thanks