crontab是linux中定时任务的
执行crontab -e可以编辑定时列表(export DISPLAY=:0 指定显示器或者export DISPLAY=localhost:0)
15 13 * * * export DISPLAY=:0 && gedit
root@ubuntu:~# crontab --helpcrontab: invalid option -- '-'crontab: usage error: unrecognized optionusage: crontab [-u user] file crontab [ -u user ] [ -i ] { -e | -l | -r } (default operation is replace, per 1003.2) -e (edit user's crontab) -l (list user's crontab) -r (delete user's crontab) -i (prompt before deleting user's crontab)