Sed Regular Expressions: Difference between revisions
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Blank spaces (spaces, tabs, newlines): <tt>\s</tt> does not seem to work. | Blank spaces (spaces, tabs, newlines): <tt>\s</tt> does not seem to work. | ||
=Regular Expression Syntax= | |||
Revision as of 22:33, 29 July 2017
Internal
Special Characters (need to be escaped in regular expressions)
/
"
$ # unescaped signifies end of line
!
[
]
Non-Special Characters (do not need to be escaped in regular expressions)
<
>
(
)
!
-
Grouping
Use \( and \) for grouping. Parentheses must be escaped to be interpreted as grouping separator.
Examples
Match everything except space:
[^ ]*
.*
seems to work too.
Words (digits, alpha, _):
sed -e 's/[0-9a-zA-Z_]*/THIS_WAS_A_WORD/g'
Blank spaces (spaces, tabs, newlines): \s does not seem to work.