at warning: commands will be executed using /bin/s

RGummi

Hello,

is there a way to switch off the stupid output of at "warning: commands will be executed using /bin/s"? I have tried to send the stderr output to /dev/null, this works but the text with the job number is also send to /dev/null! So I'am looking for a switch to tell at that I dont'need this warning!

Thanks
R

druuna · 10-12-2006, 07:32 AM

Hi,

You need to tell at which shell to use (/bin/s is not a valid shell, you should look into this!)

Use one of the following to tell at which shell to use (if present):
-c C shell. csh(1) is used to execute the at-job.
-k Korn shell. ksh(1) is used to execute the at-job.
-s Bourne shell. sh(1) is used to execute the at-job.

If you do not use one of the above the value of the SHELL variable will be used (which probably points to /bin/s, which is incorrect).

man at for details.

Hope this helps.

RGummi · 10-12-2006, 12:01 PM

Hi,

yes you are right! It says "warning: commands will be executed using /bin/sh"
I have tried at -s but it says -s is an invalid option. man at does not say anything about -s, -c -k option.

at -V says
at version 3.1.8

R

haertig · 10-12-2006, 01:58 PM

Here's how I'd do it:

Code:

$ echo 'echo hello >/dev/null' | at now + 2 min >/dev/null 2>&1

This command creates the at job, silently.

Then come back later to investigate what you need:

Code:

$ at -l
$ at -c <jobnumber>
$ atrm <jobnumber>

The first command lists all your current at jobs (jobnumber and time of execution)
The second shows the details of a specific jobnumber
The third deletes a specific jobnumber

[edit]

p.s. - If you want a one-liner that mimics what you are asking to do, here's one:

Code:

echo "echo hello > /dev/null" | at now + 2 min 2>/dev/null; at -l | tail -n1

[/edit]

RGummi · 10-13-2006, 12:34 PM

Hi,

thanks!

now I do the following:

echo $cmd | at $time $date 2>&1 | tail -n 1

this is perfect!

RGummi

10-12-2006, 01:58 PM	#4
haertig Senior Member Registered: Nov 2004 Distribution: Debian, Ubuntu, Slackware, Slax, Knoppix, SysrescueCD Posts: 1,328 Rep:	Here's how I'd do it: Code: $ echo 'echo hello >/dev/null' \| at now + 2 min >/dev/null 2>&1 This command creates the at job, silently. Then come back later to investigate what you need: Code: $ at -l $ at -c <jobnumber> $ atrm <jobnumber> The first command lists all your current at jobs (jobnumber and time of execution) The second shows the details of a specific jobnumber The third deletes a specific jobnumber [edit] p.s. - If you want a one-liner that mimics what you are asking to do, here's one: Code: echo "echo hello > /dev/null" \| at now + 2 min 2>/dev/null; at -l \| tail -n1 [/edit] Last edited by haertig; 10-12-2006 at 02:01 PM.

	#1
RGummi Member Registered: Nov 2005 Posts: 90 Rep:	at - warning: commands will be executed using /bin/s [Log in to get rid of this advertisement] Hello, is there a way to switch off the stupid output of at "warning: commands will be executed using /bin/s"? I have tried to send the stderr output to /dev/null, this works but the text with the job number is also send to /dev/null! So I'am looking for a switch to tell at that I dont'need this warning! Thanks R

10-12-2006, 07:32 AM	#2
druuna Senior Member Registered: Sep 2003 Location: the Netherlands Distribution: lfs Posts: 4,820 Rep:	Hi, You need to tell at which shell to use (/bin/s is not a valid shell, you should look into this!) Use one of the following to tell at which shell to use (if present): -c C shell. csh(1) is used to execute the at-job. -k Korn shell. ksh(1) is used to execute the at-job. -s Bourne shell. sh(1) is used to execute the at-job. If you do not use one of the above the value of the SHELL variable will be used (which probably points to /bin/s, which is incorrect). man at for details. Hope this helps.

10-12-2006, 12:01 PM	#3
RGummi Member Registered: Nov 2005 Posts: 90 Original Poster Rep:	Hi, yes you are right! It says "warning: commands will be executed using /bin/sh" I have tried at -s but it says -s is an invalid option. man at does not say anything about -s, -c -k option. at -V says at version 3.1.8 R

10-13-2006, 12:34 PM	#5
RGummi Member Registered: Nov 2005 Posts: 90 Original Poster Rep:	Hi, thanks! now I do the following: echo $cmd \| at $time $date 2>&1 \| tail -n 1 this is perfect! RGummi