Regular expressions

Find everything up to a tab

[^\t]+

Find capital letter, period, space, capital letter, period.

([A-Z]\.)[ ]([A-Z]\.)

Kill the space by using this for the replacement field:

$1$2

Perl: find uppercase words.

 \b[[:upper:]]{2,}\b

find capital letter at the end of a line, insert period before newline

(\s[[:upper:]])\n

\1\.^p

find period, capital letter at the end of a line

 (\.[[:upper:]])\n 

find lowercase characters one-at-a-time

([a-z])

\s\(([0-9]{4})

\s[[:upper:]]+\r

\L\1\n -- lowercases everything

\L2\1\n -- inserts 2, space, lowercase of the string

\L$2\1\n -- does not insert 2, lowercases string

\U\L\1\n -- lowercases everything

Links

• Perl Regular Expressions