How can i catch error message from command line TCL

Question

I'm writing script at tcl on ICC and trying to get error message while sending ran to sung-grid.

For example, I have the below line.

sh /usr/bin/xterm -e "cd DM ; mqsub -int -parallel 200 cal -cal -t 200 CAL_header | tee S.log ; touch .S_finished" &

since I don't have 200 free cpu, If i execute this command line at linux shell I'll get the below message: "Your "qrsh" request could not be scheduled, try again later."

How can i catch this error message at ICC with & and the end of the command?

Thanks

Answer 1

Do you mean Synopsys ICCompiler by term ICC?

If there is any error regarding queue for launching the job for any EDA tool kindly prefer, the following way of launching.

{launch command for job (qsub *switches* ) } > & log &

this will eliminate the troubleshooting difficulties. Sorry for posting this question as answer but i am unable to comment

Answer 2

I assume, you are executing the shell command by means of using exec in tcl.

In that case, you could use catch statement to get identify the error message.

if { [catch {exec <your_shell_program_command_here>} result] } {
    puts "Following problem happened : $result"
    exit 1
} 

Syntax :

catch script ?varName?

Quoting the below from the man page

If script raises an error, catch will return a non-zero integer value corresponding to the exceptional return code returned by evaluation of script. Tcl defines the normal return code from script evaluation to be zero (0), or TCL_OK. Tcl also defines four exceptional return codes: 1 (TCL_ERROR), 2 (TCL_RETURN), 3 (TCL_BREAK), and 4 (TCL_CONTINUE). Errors during evaluation of a script are indicated by a return code of TCL_ERROR.