In cron, /usr/bin/paplay does not display stderr
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My PC's pulse audio dies whenever I open and close virtualbox windows in a certain situation.
So I tried to monitor the audio state by crontab -e.
Usually, in the commandline, $ paplay beep.wav >>err.log 2>&1 || echo "``date` `" >>err.log; is enough.
If no error, it adds nothing to err.log but beeping sound.
If an error, it adds "... shm_open() ..." and a current timestamp to err.log without beeping sound.
But if I locate this command line in cron, it makes beep sound periodically but when failed it does not log err.log. It simply doesn't make any stderr though no beep sounds. Likewise, || echo... doesn't work, either.
cron file-descriptors stderr
edited Mar 14 at 7:41
muru
33.4k577141
asked Mar 14 at 7:39
user58029
113
add a comment |Â
up vote
0
down vote
favorite
My PC's pulse audio dies whenever I open and close virtualbox windows in a certain situation.
So I tried to monitor the audio state by crontab -e.
Usually, in the commandline, $ paplay beep.wav >>err.log 2>&1 || echo "``date` `" >>err.log; is enough.
If no error, it adds nothing to err.log but beeping sound.
If an error, it adds "... shm_open() ..." and a current timestamp to err.log without beeping sound.
But if I locate this command line in cron, it makes beep sound periodically but when failed it does not log err.log. It simply doesn't make any stderr though no beep sounds. Likewise, || echo... doesn't work, either.
cron file-descriptors stderr
edited Mar 14 at 7:41
muru
33.4k577141
asked Mar 14 at 7:39
user58029
113
Please post yourcrontab -lentry for this command.
– yahol
Mar 14 at 8:37
@yahol , after rebooting everything works fine, thouse sound problem still persists.
– user58029
Mar 25 at 1:30
How about enclosing that whole script in a file and adding the script to cron?
– yahol
Mar 25 at 4:32
@yahol , Thanks for ur info. Everything works fine without adding external script. Audio problem can be reproduced by deleting any ofpulse-shm-2780269722looking files in /dev/shm/ .
– user58029
Apr 8 at 7:44
add a comment |Â
up vote
0
down vote
favorite
up vote
0
down vote
favorite
My PC's pulse audio dies whenever I open and close virtualbox windows in a certain situation.
So I tried to monitor the audio state by crontab -e.
Usually, in the commandline, $ paplay beep.wav >>err.log 2>&1 || echo "``date` `" >>err.log; is enough.
If no error, it adds nothing to err.log but beeping sound.
If an error, it adds "... shm_open() ..." and a current timestamp to err.log without beeping sound.
But if I locate this command line in cron, it makes beep sound periodically but when failed it does not log err.log. It simply doesn't make any stderr though no beep sounds. Likewise, || echo... doesn't work, either.
cron file-descriptors stderr
edited Mar 14 at 7:41
muru
33.4k577141
asked Mar 14 at 7:39
user58029
113
My PC's pulse audio dies whenever I open and close virtualbox windows in a certain situation.
So I tried to monitor the audio state by crontab -e.
Usually, in the commandline, $ paplay beep.wav >>err.log 2>&1 || echo "``date` `" >>err.log; is enough.
If no error, it adds nothing to err.log but beeping sound.
If an error, it adds "... shm_open() ..." and a current timestamp to err.log without beeping sound.
But if I locate this command line in cron, it makes beep sound periodically but when failed it does not log err.log. It simply doesn't make any stderr though no beep sounds. Likewise, || echo... doesn't work, either.
cron file-descriptors stderr
edited Mar 14 at 7:41
muru
33.4k577141
asked Mar 14 at 7:39
user58029
113
edited Mar 14 at 7:41
muru
33.4k577141
edited Mar 14 at 7:41
muru
33.4k577141
edited Mar 14 at 7:41
muru
33.4k577141
33.4k577141
asked Mar 14 at 7:39
user58029
113
asked Mar 14 at 7:39
user58029
113
asked Mar 14 at 7:39
user58029
113
113
Please post yourcrontab -lentry for this command.
– yahol
Mar 14 at 8:37
@yahol , after rebooting everything works fine, thouse sound problem still persists.
– user58029
Mar 25 at 1:30
How about enclosing that whole script in a file and adding the script to cron?
– yahol
Mar 25 at 4:32
@yahol , Thanks for ur info. Everything works fine without adding external script. Audio problem can be reproduced by deleting any ofpulse-shm-2780269722looking files in /dev/shm/ .
– user58029
Apr 8 at 7:44
add a comment |Â
Please post yourcrontab -lentry for this command.
– yahol
Mar 14 at 8:37
@yahol , after rebooting everything works fine, thouse sound problem still persists.
– user58029
Mar 25 at 1:30
How about enclosing that whole script in a file and adding the script to cron?
– yahol
Mar 25 at 4:32
@yahol , Thanks for ur info. Everything works fine without adding external script. Audio problem can be reproduced by deleting any ofpulse-shm-2780269722looking files in /dev/shm/ .
– user58029
Apr 8 at 7:44
Please post your
crontab -l entry for this command.– yahol
Mar 14 at 8:37
Please post your
crontab -l entry for this command.– yahol
Mar 14 at 8:37
@yahol , after rebooting everything works fine, thouse sound problem still persists.
– user58029
Mar 25 at 1:30
@yahol , after rebooting everything works fine, thouse sound problem still persists.
– user58029
Mar 25 at 1:30
How about enclosing that whole script in a file and adding the script to cron?
– yahol
Mar 25 at 4:32
How about enclosing that whole script in a file and adding the script to cron?
– yahol
Mar 25 at 4:32
@yahol , Thanks for ur info. Everything works fine without adding external script. Audio problem can be reproduced by deleting any of
pulse-shm-2780269722 looking files in /dev/shm/ .– user58029
Apr 8 at 7:44
@yahol , Thanks for ur info. Everything works fine without adding external script. Audio problem can be reproduced by deleting any of
pulse-shm-2780269722 looking files in /dev/shm/ .– user58029
Apr 8 at 7:44
add a comment |Â
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Please post your
crontab -lentry for this command.– yahol
Mar 14 at 8:37
@yahol , after rebooting everything works fine, thouse sound problem still persists.
– user58029
Mar 25 at 1:30
How about enclosing that whole script in a file and adding the script to cron?
– yahol
Mar 25 at 4:32
@yahol , Thanks for ur info. Everything works fine without adding external script. Audio problem can be reproduced by deleting any of
pulse-shm-2780269722looking files in /dev/shm/ .– user58029
Apr 8 at 7:44