crontab.d/jobs: Random sleep before running a command.

[config/dotfiles.git] / crontab.d / jobs

diff --git a/crontab.d/jobs b/crontab.d/jobs
index de29c357959f30bf657f3ecd5c59c09e5f927a81..8f575fcc85b57d1b32459f8bca21e366c2f867bd 100644 (file)
--- a/crontab.d/jobs
+++ b/crontab.d/jobs
@@ -21,14 +21,18 @@
 # Include user's binaries in PATH. Expanding $HOME doesn't work with cron,
 # `update.sh` handles that!
 PATH=$HOME/bin:$HOME/.shell/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
+# "RAND_SLEEP X" is also expanded by `update.sh` to a command which sleeps
+# randomly between 0 and X seconds. Used to reduce concurrent commands if this
+# crontab file is used by multiple users.
 
 
 # Taken from Debian's /etc/crontab from cron package 3.0pl1-124 and modified.
 # Thanks.
-17 * * * * run-parts --report .crontab.d/jobs.hourly
-25 6 * * * run-parts --report .crontab.d/jobs.daily
-47 6 * * 7 run-parts --report .crontab.d/jobs.weekly
-52 6 1 * * run-parts --report .crontab.d/jobs.monthly
+17 * * * * RAND_SLEEP 60;   run-parts --report .crontab.d/jobs.hourly
+25 6 * * * RAND_SLEEP 1800; run-parts --report .crontab.d/jobs.daily
+47 6 * * 7 RAND_SLEEP 3600; run-parts --report .crontab.d/jobs.weekly
+52 6 1 * * RAND_SLEEP 3600; run-parts --report .crontab.d/jobs.monthly
 
-# Run every 8 hours.
-39 */8 * * * run-parts --report .crontab.d/jobs.hourly8
+# Run every x hours.
+31 */6 * * * RAND_SLEEP 600; run-parts --report .crontab.d/jobs.hourly6
+39 */8 * * * RAND_SLEEP 600; run-parts --report .crontab.d/jobs.hourly8