Sed Regular Expressions: Difference between revisions
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=Regular Expression Syntax= | =Regular Expression Syntax= | ||
<font color=red>TO NORMALIZE across [[Java_Regular_Expressions#Regular_Expression_Syntax|java Regular Expression Syntax]], [[Grep_Regular_Expressions#Regular_Expression_Syntax|grep Regular Expression Syntax]], [[Sed_Regular_Expressions#Regular_Expression_Syntax|sed Regular Expression Syntax]].</font> | |||
Revision as of 23:14, 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.
Regular Expression Syntax
TO NORMALIZE across java Regular Expression Syntax, grep Regular Expression Syntax, sed Regular Expression Syntax.