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Top Forums UNIX for Dummies Questions & Answers Nohup in conjunction with time Post 302801049 by BearCheese on Wednesday 1st of May 2013 08:06:20 AM

05-01-2013

Registered User

Nohup in conjunction with time

hi,
if I exectute "nohup time ls -1" I get the following output

Code:

[user@hostname directory]$ nohup time ls -1
file_1
file_2
file_3
file_4
file_5
0.000u 0.001s 0:00.00 0.0%      0+0k 0+0io 0pf+0w

This is all OK.

But if I want to capture this whole output in to a text file I would want to use something like

Code:

[user@hostname directory]$ nohup time ls -1 >output.txt
0.000u 0.002s 0:00.00 0.0%      0+0k 0+8io 0pf+0w
[user@hostname directory]$ more output.txt
file_1
file_2
file_3
file_4
file_5
output.txt

My problem is that the output.txt doesn't contain the result from the "time" command. It looks like to me that nohup didn't recognise that at the end of the command line, the output redirection was meant for the entire nohup command. ls -1 command seems to just take the output redirection for itself.

How can I get the entire result of nohup to be put in the output.txt file?

I tried a lot of weird ways but just couldn't get it worked.

I'd prefer bash solutions.

Last edited by radoulov; 05-01-2013 at 10:38 AM..

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LEARN ABOUT BSD

nice

NICE(1) 						      General Commands Manual							   NICE(1)

NAME

       nice, nohup - run a command at low priority (sh only)

SYNOPSIS

       nice [ -number ] command [ arguments ]

       nohup command [ arguments ]

DESCRIPTION

       Nice  executes  command	with low scheduling priority.  If the number argument is present, the priority is incremented (higher numbers mean
       lower priorities) by that amount up to a limit of 20.  The default number is 10.

       The super-user may run commands with priority higher than normal by using a negative priority, e.g. `--10'.

       Nohup executes command immune to hangup and terminate signals from the controlling terminal.  The priority  is  incremented  by	5.   Nohup
       should  be invoked from the shell with `&' in order to prevent it from responding to interrupts by or stealing the input from the next per-
       son who logs in on the same terminal.

FILES

       nohup.out standard output and standard error file under nohup

SEE ALSO

       csh(1), setpriority(2), renice(8)

DIAGNOSTICS

       Nice returns the exit status of the subject command.

BUGS

       Nice and nohup are particular to sh(1).	If you use csh(1), then commands executed with ``&'' are automatically immune  to  hangup  signals
       while  in  the  background.   There  is	a builtin command nohup which provides immunity from terminate, but it does not redirect output to
       nohup.out.

       Nice is built into csh(1) with a slightly different syntax than described here.	The form ``nice +10'' nices to positive nice,  and  ``nice
       -10'' can be used by the super-user to give a process more of the processor.

4th Berkeley Distribution					    May 8, 1986 							   NICE(1)

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