'how to create a cron expression for every 2 weeks

Here is cron expression I tried 0 0 0 */14 * ? it is giving following schedules

Start Time:- Friday, September 8, 2017 1:25 AM

Next Scheduled :-

1.  Friday, September 15, 2017 12:00 AM
2.  Friday, September 29, 2017 12:00 AM
3.  Sunday, October 1, 2017 12:00 AM
4.  Sunday, October 15, 2017 12:00 AM
5.  Sunday, October 29, 2017 12:00 AM

this expression is working for every 2 weeks in every month, but my requirement is it has to run for every 2 weeks, I mean after executing sept 29th, nxt schedule should be October 13 but it is scheduling for October 1

cron

Solution 1:^[1]

There is no direct cron expression for every 2 weeks but I kept following cron expression , which is similar to 2 weeks but not exactly for 2 weeks

cron for every 2weeks(on 1st and 15th of every month at 1:30AM) - 30 1 1,15 * *

Solution 2:^[2]

Friday every two weeks:

0 0 * * Fri [ $(expr $(date +%W) \% 2) -eq 1 ] && /path/to/command

Found on: https://cron.help/every-2-weeks-on-friday

Solution 3:^[3]

You need to specify a start day. Otherwise it's will always reset with the 1st day of the month. So this expression "0 0 0 23/14 OCT ? 2017" is every 2 weeks starting on October 23rd 2017

Solution 4:^[4]

30 7 1-7,14-21 * 1

“At 07:30 on every day-of-month from 1 through 7 and every day-of-month from 14 through 21 and on Monday.”

Solution 5:^[5]

crontab manual on my Ubuntu 18 says:

Note: The day of a command's execution can be specified by two fields — day of month, and day of week. If both fields are restricted (i.e., aren't *), the command will be run when either field matches the current time. For example, ``30 4 1,15 * 5'' would cause a command to be run at 4:30 am on the 1st and 15th of each month, plus every Friday. One can, however, achieve the desired result by adding a test to the command (see the last example in EXAMPLE CRON FILE below).

and the mentioned example is:

# Run on every second Saturday of the month
0 4 8-14 * *    test $(date +\%u) -eq 6 && echo "2nd Saturday"

Sources

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Source: Stack Overflow

Solution	Source
Solution 1	Sat
Solution 2
Solution 3	Karl Fecteau
Solution 4	Cao Duy Võ Nguy?n
Solution 5	marcin007

'how to create a cron expression for every 2 weeks

Solution 1:[1]

Solution 2:[2]

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Solution 4:[4]

Solution 5:[5]