how to write a shell script to run multiple commands

Question

I want to run two commands

ssh -f [email protected] 'nohup Rscript L_1.R > L_1_sh.txt'

and

ssh -f [email protected] 'nohup Rscript L_2.R > L_2_sh.txt'

I write a shell script test_1.shas following:

ssh -f [email protected] 'nohup Rscript L_1.R > L_1_sh.txt' ; ssh -f [email protected] 'nohup Rscript L_2.R > L_2_sh.txt'

But it always run the first command. And it does not run the second command. The terminal shows

: command not found:

Does the second command work by itself from the command line? — Politank-Z
– Politank-Z, Commented Apr 15, 2015 at 2:32
Are concurrent logins for that account allowed? Are concurrent runs of Rscript allowed? Do you get any errors from the script/ssh commands? Does adding wait after the second ssh "fix" things? — Etan Reisner
– Etan Reisner, Commented Apr 15, 2015 at 2:33
Also: PLEASE, PLEASE don't use backticks for quoting full lines of code on StackOverflow, especially in bash, where they're semantically meaningful! If you select your code and click the {} button in the editor, it'll indent your selection with four spaces, which marks that content as code; you can also just type four spaces at the beginning of each line yourself. Then we don't have to wonder if you're putting unnecessary literal backticks in your command (a mistake some people make), or just don't know how to use StackOverflow code formatting correctly. — Charles Duffy
– Charles Duffy, Commented Apr 15, 2015 at 3:07
Much more likely, of course, is just that your file has DOS newlines rather than being a UNIX text file. — Charles Duffy
– Charles Duffy, Commented Apr 15, 2015 at 3:11

Oldest Software Guy · Accepted Answer · 2015-04-15 13:36:28Z

1

ssh -f [email protected] 'nohup Rscript L_1.R > L_1_sh.txt' ; ssh -f [email protected] 'nohup Rscript L_2.R > L_2_sh.txt'

The error message is correct becaue there is no program named 'nohup -f mike...' on the destination system.

Run the test command:

The [command] executed by ssh(1) can consist of multiple words, just not filename redirection; do that inside your script.

answered Apr 15, 2015 at 13:36

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