UNIX for Dummies Questions & Answers

Dear ULF followers,

I'm a newbie in this field (linux ), but I want to have some tools to help me in my work. One of them is to know exactely what runs in the cluster from my institute.

I notice that using cut and qstat allow me to see the ocupation of the cluster and other usefull things. Also

Code:

qstat -f|grep exec_host

can tell me on what nodes my apps are runing.

I would like to be able to write those on one-line command, and refresh the output (like watch does), but I'm having problems combining watch with cut and paste.

For example:

Code:

paste <(qstat -a|tail -n +6|cut -c1-4,21-30,40-55,67-73,87-94) <(qstat -f|grep exec_host|cut -c17-24)

works well, but when I try a

Code:

watch -n 1 'paste <(qstat -a|tail -n +6|cut -c1-4,21-30,40-55,67-73,87-94) <(qstat -f|grep exec_host|cut -c17-24) '

I receive the following error

Code:

sh: -c: line 0: syntax error near unexpected token `(' sh: -c: line 0: `paste <(qstat -a|tail -n +6|cut -c1-4,21-30,40-55,67-73,87-94) <(qstat -f|grep exec_host|cut -c17-24) '

Can anyone help me please? I thank you!

Moderator's Comments:

Welcome to the UNIX and Linux Forums. Please use code tags. Video tutorial on how to use them

Try:

Code:

watch -n 1 'bash -c "paste <(qstat -a|tail -n +6|cut -c1-4,21-30,40-55,67-73,87-94) <(qstat -f|grep exec_host|cut -c17-24)"'

Dear bartus11, I saw you have more thanks (759) than posts(747); I just want to add many thanks to you. The code provided works. Thank you!

---------- Post updated at 09:21 PM ---------- Previous update was at 09:00 PM ----------

1 more question though, if I would assign an alias to

Code:

paste <(...) (...)

(for example "cluster"), how the watch command will look like? Thank you in advance!