[CentOS] Shell Scripting Random Delay
Leon Fauster
leonfauster at googlemail.comWed May 15 19:32:29 UTC 2013
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Am 15.05.2013 um 17:44 schrieb Matt <matt.mailinglists at gmail.com>: > I have a shell script that's run every 5 minutes I use to call many > other shell scripts. Is there a way to wait a random number of > seconds before executing each line? Something like this. > > wait_random 10 - 180 (perl /scripts/my_script.pl) & > wait_random 10 - 180 (perl /scripts/my_script5.pl) & > wait_random 10 - 180 (perl /scripts/my_script7.pl) & > > I have many entries in this file and I background them all because > most must poll network devices which can take time. None should take > over 2 minutes though. > > When I run them all at once they bog the system and cause some of > latency graphs on equipment being monitored to look poor. for bash scripts: MOD="45" sleep "$[($RANDOM % $MOD)]" # RANDOM Each time this parameter is referenced, a random integer between 0 and 32767 is generated. # sleep will wait something beetween 0 and 45 seconds -- LF
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