Added comment on cron job.

doc/erko_howto_tools.txt

@@ -10,6 +10,8 @@
 * Markdown
 * Vi
 * Remote access
+* Regression test
+* License server
 * Screen to run a terminal session without ssh connection
 * Quartus Qsys IP files in GIT
 * Quartus version
@@ -471,10 +473,19 @@ Host dop421
     User hiemstra
     ProxyCommand ssh -q -A astron netcat 10.87.0.221
 
+*******************************************************************************
+* Regression test
+*******************************************************************************
+
 * Remote access to regression test machine dop349:
 ssh -X kooistra@portal.astron.nl
 ssh -X regtest@dop349
 
+crontab -l  # shows scheduled cron jobs
+crontab -e  # edit schedule
+
+tail -n 1000 unb2b_modelsim_regression_test_vhdl_cron.log
+
 *******************************************************************************
 * License server
 *******************************************************************************
@@ -751,6 +762,7 @@ Start --> Administration --> Synaptic package manager
 groups kooistra           # lists in which Linux groups I am a member of
 id kooistra               # lists in which Linux groups I am a member of
 getent group sudo         # lists which users are in the sudo Linux group
+getent group software     # lists which users are in the software Linux group
 more /etc/group
 sudo groupadd software                 # add new Linux group 'software'
 sudo usermod -a -G software kooistra   # add user 'kooistra' to a Linux group 'software'