regex101: PCRE (Legacy) Match Workspace

Pro

OUTthe literal text OUT (case sensitive)

\s*any whitespace character, repeated any number of times

:?optionally matches the literal : (58₁₀ / 72₈ / 3A₁₆)

Group 1([^:]*)

Negated Character Class[^:]*

*matches any number of characters outside the set below:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Positive Lookahead(?=.*?\bWarning\b)

.*?any character, repeated any number of times

\ban ASCII word boundary

Warningthe literal text Warning (case sensitive)

\ban ASCII word boundary

Non-Capturing Group(?:(?!OUT).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!OUT)

OUTthe literal text OUT (case sensitive)

.any character

Negative Lookahead(?!.*?\1[:\s]*Warning)

.*?any character, repeated any number of times

\1the text saved by group 1

Character Class[:\s]*

*matches any number of characters from the set below:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\sany whitespace character

Warningthe literal text Warning (case sensitive)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

s modifier: single line. Allows a dot to match line terminators

25 tokens

Regular Expression

OUT\s*:?([^:]*):(?=.*?\bWarning\b)(?:(?!OUT).)*(?!.*?\1[:\s]*Warning)

New

OUT :abc123: : Warning: /var/tmp/prodperim/installer/abc123.fw is older than it should be (not updated for 36 hours)
OUT :abc123 : : Warning: /var/tmp/prodperim/installer/abc123.fw.schedule is older than it should be (not updated for 36 hours)
OUT abc1234: : Warning: / filesystem 100% full
OUT abc1234: : Warning: / filesystem 100% full
OUT abc1234: : Warning: /var/tmp/prodperim/installer/abc123.fw is older than it should be (not updated for 36 hours)
OUT bcd111: : Warning: /var/tmp/prodperim/installer/abc123.fw.schedule is older than it should be (not updated for 36 hours)
OUT bcd111: : Succeeded.

Substitution

OUT :abc123: : Warning: /var/tmp/prodperim/installer/abc123.fw is older than it should be (not updated for 36 hours)
OUT :abc123 : : Warning: /var/tmp/prodperim/installer/abc123.fw.schedule is older than it should be (not updated for 36 hours)
OUT abc1234: : Warning: / filesystem 100% full
OUT abc1234: : Warning: / filesystem 100% full
OUT abc1234: : Warning: /var/tmp/prodperim/installer/abc123.fw is older than it should be (not updated for 36 hours)
OUT bcd111: : Warning: /var/tmp/prodperim/installer/abc123.fw.schedule is older than it should be (not updated for 36 hours)
OUT bcd111: : Succeeded.