在一般使用者的帳號下, 讓 linux 開機時, 自動執行特定的程式
通常只有root 權限才能夠修改/etc/rc.local 檔來達到開機自動執行特定程式的功能(此處並非使用service 方式).
若只有一般user 權限的帳號, 該如何做呢?
利用crontab 即可達到此功能.
例如, 想要在linux 開機時, 自動啟動 vnc server
$ crontab -e
# Edit this file to introduce tasks to be run by cron.
#
# Each task to run has to be defined through a single line
# indicating with different fields when the task will be run
# and what command to run for the task
#
# To define the time you can provide concrete values for
# minute (m), hour (h), day of month (dom), month (mon),
# and day of week (dow) or use '*' in these fields (for 'any').
#
# Notice that tasks will be started based on the cron's system
# daemon's notion of time and timezones.
#
# Output of the crontab jobs (including errors) is sent through
# email to the user the crontab file belongs to (unless redirected).
#
# For example, you can run a backup of all your user accounts
# at 5 a.m every week with:
# 0 5 * * 1 tar -zcf /var/backups/home.tgz /home/
#
# For more information see the manual pages of crontab(5) and cron(8)
#
# m h dom mon dow command
@reboot /usr/bin/vncserver :1