regex101: Cron Job Regular Expression for JavaScript / ECMAScript

Pro

^start of string

Group 1(((\d+,)+\d+|((\d+|[*])[/]\d+|((JAN|FEB|APR|MA[RY]|JU[LN]|AUG|SEP|OCT|NOV|DEC)(-(JAN|FEB|APR|MA[RY]|JU[LN]|AUG|SEP|OCT|NOV|DEC))?))|(\d+-\d+)|\d+(-\d+)?[/]\d+(-\d+)?|\d+|[*]|(MON|TUE|WED|THU|FRI|SAT|SUN)(-(MON|TUE|WED|THU|FRI|SAT|SUN))?) ?){5}

{5}repeats the group contents below exactly 5 times:

Group 2((\d+,)+\d+|((\d+|[*])[/]\d+|((JAN|FEB|APR|MA[RY]|JU[LN]|AUG|SEP|OCT|NOV|DEC)(-(JAN|FEB|APR|MA[RY]|JU[LN]|AUG|SEP|OCT|NOV|DEC))?))|(\d+-\d+)|\d+(-\d+)?[/]\d+(-\d+)?|\d+|[*]|(MON|TUE|WED|THU|FRI|SAT|SUN)(-(MON|TUE|WED|THU|FRI|SAT|SUN))?)

1st Alternative(\d+,)+\d+

Group 3(\d+,)+

+repeats the group contents below at least once:

\d+a digit, repeated at least once

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\d+a digit, repeated at least once

2nd Alternative((\d+|[*])[/]\d+|((JAN|FEB|APR|MA[RY]|JU[LN]|AUG|SEP|OCT|NOV|DEC)(-(JAN|FEB|APR|MA[RY]|JU[LN]|AUG|SEP|OCT|NOV|DEC))?))

Group 4((\d+|[*])[/]\d+|((JAN|FEB|APR|MA[RY]|JU[LN]|AUG|SEP|OCT|NOV|DEC)(-(JAN|FEB|APR|MA[RY]|JU[LN]|AUG|SEP|OCT|NOV|DEC))?))

1st Alternative(\d+|[*])[/]\d+

Group 5(\d+|[*])

1st Alternative\d+

\d+a digit, repeated at least once

2nd Alternative[*]

Character Class[*]

*the literal * (42₁₀ / 52₈ / 2A₁₆)

Character Class[/]

/the literal / (47₁₀ / 57₈ / 2F₁₆)

\d+a digit, repeated at least once

2nd Alternative((JAN|FEB|APR|MA[RY]|JU[LN]|AUG|SEP|OCT|NOV|DEC)(-(JAN|FEB|APR|MA[RY]|JU[LN]|AUG|SEP|OCT|NOV|DEC))?)

Group 6((JAN|FEB|APR|MA[RY]|JU[LN]|AUG|SEP|OCT|NOV|DEC)(-(JAN|FEB|APR|MA[RY]|JU[LN]|AUG|SEP|OCT|NOV|DEC))?)

Group 7(JAN|FEB|APR|MA[RY]|JU[LN]|AUG|SEP|OCT|NOV|DEC)

1st AlternativeJAN

JANthe literal text JAN (case insensitive)

2nd AlternativeFEB

FEBthe literal text FEB (case insensitive)

3rd AlternativeAPR

APRthe literal text APR (case insensitive)

4th AlternativeMA[RY]

MAthe literal text MA (case insensitive)

Character Class[RY]

Rthe literal R (82₁₀ / 122₈ / 52₁₆) (case insensitive)

Ythe literal Y (89₁₀ / 131₈ / 59₁₆) (case insensitive)

5th AlternativeJU[LN]

JUthe literal text JU (case insensitive)

Character Class[LN]

Lthe literal L (76₁₀ / 114₈ / 4C₁₆) (case insensitive)

Nthe literal N (78₁₀ / 116₈ / 4E₁₆) (case insensitive)

6th AlternativeAUG

AUGthe literal text AUG (case insensitive)

7th AlternativeSEP

SEPthe literal text SEP (case insensitive)

8th AlternativeOCT

OCTthe literal text OCT (case insensitive)

9th AlternativeNOV

10th AlternativeDEC

Group 8(-(JAN|FEB|APR|MA[RY]|JU[LN]|AUG|SEP|OCT|NOV|DEC))?

3rd Alternative(\d+-\d+)

4th Alternative\d+(-\d+)?[/]\d+(-\d+)?

5th Alternative\d+

6th Alternative[*]

7th Alternative(MON|TUE|WED|THU|FRI|SAT|SUN)(-(MON|TUE|WED|THU|FRI|SAT|SUN))?

?optionally matches the literal (32₁₀ / 40₈ / 20₁₆)

$end of string

Global pattern flags

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

d modifier: indices. The JavaScript regex engine returns the indices at which the regex matched in the subject string

u modifier: unicode. Enables Unicode-aware matching and escape syntax

26 tokens

Regular Expression

^(((\d+,)+\d+|((\d+|[*])[/]\d+|((JAN|FEB|APR|MA[RY]|JU[LN]|AUG|SEP|OCT|NOV|DEC)(-(JAN|FEB|APR|MA[RY]|JU[LN]|AUG|SEP|OCT|NOV|DEC))?))|(\d+-\d+)|\d+(-\d+)?[/]\d+(-\d+)?|\d+|[*]|(MON|TUE|WED|THU|FRI|SAT|SUN)(-(MON|TUE|WED|THU|FRI|SAT|SUN))?) ?){5}$

Regular Expressions 101

Regular Expression

Extraction