blog:bash_string_functions
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Table of Contents
bash string functions
len() in bash
$ var='Hello, World!'
$ echo "${#var}"
13
left() in bash
$ var='Hello, World!'
#${string:position:length}
$ echo "${var:0:5}"
Hello
right() in bash
$ var='Hello, World!'
#${string:position:length}
$ echo "${var:7:${#var}}"
World!
#or a litte more dynamic.. (the 6 most right chars)
echo "${var:$((${#var}-6)):${#var}}"
World!
mid() in bash
$ var='Hello, World!'
#${string:position:length}
$ echo "${var:4:4}"
o, W
string replace first in bash (substitute)
$ var='Hello, World!'
#${string/substring/replacement}
$ echo "${var/o/a}"
Hella, World!
string replace all in bash (substitute)
$ var='Hello, World!'
#${string//substring/replacement}
$ echo "${var//o/a}"
Hella, Warld!
Reference: http://www.netmess.org/tag/bash/
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blog/bash_string_functions.1398325461.txt.gz · Last modified: 2014-04-24 09:44 by brb
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