Installing env

env bash functions

The env bash functions are installed by

1. checkout env from SVN:

   [root@belle1 ~]# cd
   [root@belle1 ~]# pwd
   /root
   [root@belle1 ~]# svn co http://dayabay.phys.ntu.edu.tw/repos/env/trunk env

2. hook up the bash functions to your bash shell by adding the below to your .bash_profile:

   export ENV_HOME=/root/env ; env-(){ [ -r $ENV_HOME/env.bash ] && . $ENV_HOME/env.bash  && env-env $* ; }
   env-
   PATH=$ENV_HOME/bin:$PATH
   export PATH

env python modules

1. find the system python site packages, eg at /usr/lib/python2.4/site-packages:

   [root@belle1 tmp]# python -c "import sys ; print '\n'.join(sys.path) "     # finding site-packages
   
   /usr/lib/python24.zip
   /usr/lib/python2.4
   /usr/lib/python2.4/plat-linux2
   /usr/lib/python2.4/lib-tk
   /usr/lib/python2.4/lib-dynload
   /usr/lib/python2.4/site-packages
   /usr/lib/python2.4/site-packages/Numeric
   /usr/lib/python2.4/site-packages/gtk-2.0

2. plant symbolic link to env python modules:

   [root@belle1 tmp]# cd /usr/lib/python2.4/site-packages
   [root@belle1 site-packages]# ln -s /root/env env
   [root@belle1 site-packages]# ll env*
   lrwxrwxrwx 1 root root 15 May 30 18:28 env -> /root/env

3. check can access the env python modules:

   [root@belle1 ~]# python -c "import env"
   [root@belle1 ~]#

example crontab using env python scripts and modules

Edit crontab with crontab -e:

SHELL=/bin/bash
HOME=/root
ENV_HOME=/root/env
CRONLOG_DIR=/root/cronlog
MAILTO=blyth@hep1.phys.ntu.edu.tw
PATH=/root/env/bin:/usr/bin:/bin
#
40 05 * * * ( . $ENV_HOME/env.bash ; db- ; db-backup-rsync-monitor )  > $CRONLOG_DIR/db-backup-rsync-monitor.log 2>&1
52 * * * * ( valmon.py -s diskmon rec rep mon )                       > $CRONLOG_DIR/diskmon.log 2>&1

For more on the valmon.py script see Value Monitoring.