31,703
edits
Changes
no edit summary
** since weekdays shift throughout the year, i.e., they are not dependent on specific days of a month, so when they are used with crontab in conjunction, the action will be executed when the current time matches the value in either field. For instance, '''5 5 5 * 5''' would cause the specified command to be executed at 5:05 AM every fifth day of every month plus every Friday.
** since weekdays shift throughout the year, i.e., they are not dependent on specific days of a month, so when they are used with crontab in conjunction, the action will be executed when the current time matches the value in either field. For instance, '''5 5 5 * 5''' would cause the specified command to be executed at 5:05 AM every fifth day of every month plus every Friday.
==Example==
==Examples==
This section will provide some crontab usage examples in the hopes of helping you getting the hang of the system or even finding one that you could use.
This section will provide some crontab usage examples in the hopes of helping you getting the hang of the system or even finding one that you could use.
===Periodic SIM switch===
===Periodic SIM switch===
----
----
For this example we'll configure a rule that initiates a SIM switch every weekday at 6:45 PM. To execute a SIM card switch via CLI the command '''sim_switch''' is used, so we'll combined this with the crontab and configure the rule:
# 45 18 * * 1-5 sim_switch change
Let's overview what each segment indicates:
* 45 - the action must take place at minute 45
* 18 - the action must take place at 6 PM
* 2x(*) - all months and days of the month are applicable to the rule
* 1-5 - the action must take place every Monday - Friday
* sim_switch - the command that will be executed
* change - option for the sim_switch command
To sum up, the first five segments denote the frequency of the sim_switch command. The option '''change''' specifies that the SIM card that is currently in use will be switched. So the entire entry will perform a SIM switch to the opposite SIM card every weekday at 6:45 PM.
==External links==
==External links==
https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html - PuTTY downloads page link
https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html - PuTTY downloads page link
