I am quite noob however... if your script does use gui, maybe you must use DISPLAY=:0.0 */5 * * * * /usr/local/bin/ruby /local/myuser/rubyscript/script1.rb a useful link may be http://www.unix.com/answers-frequently-asked-questions/13527-cron-crontab.html CC Chen wrote in post #1039530: > Hi all, > > I used crontab command such as > "*/5 * * * * /usr/local/bin/ruby /local/myuser/rubyscript/script1.rb" > > But it can't execute script1.rb, I let it print some message every 5 > min. > > I also changed script1.rb to chmod 755. > > > Does the crontab command is right? > > > > Thanks. -- Posted via http://www.ruby-forum.com/.