advanced split in bash

[Ciary]

Hi,

i'm not an expert in bash and i have a question. is there a way to split a string on a sequence of characters rather than just one?

the idea is the following

workdir=`pwd`
echo $workdir
# /path/to/my/split/directory/i/want/
arr=$(echo $workdir | tr "/split/" "\n")
echo $arr[0]
# /path/to/my
echo $arr[1]
# directory/i/want/
 

this is not what this code actually does, but that's what i tried and wanted it to do. when i execute this, the string in workdir is actually split on all characters that match a character in "/split/"

tnx

[Ciary]

there is a workaround

workdir=`pwd`
echo $workdir
# /path/to/my/split/directory/i/want/
temp=$(echo $workdir | sed "s/\/split\// /g")
echo $temp
# /path/to/my directory/i/want/
arr=( $temp )
echo ${arr[0]}
# /path/to/my
echo ${arr[1]}
# directory/i/want/
 

but there has to be a way to do this without the temp-variable, right?

[Luuk]

#!/bin/bash
 
workdir=/path/to/my/split/directory/i/want/
echo "workdir: $workdir"
p1=/split/*
echo "1: " ${workdir/$p1}
echo "workdir: $workdir"
p2=*/split/
echo "2: " ${workdir/$p2}
 

output:

workdir: /path/to/my/split/directory/i/want/
1:  /path/to/my
workdir: /path/to/my/split/directory/i/want/
2:  directory/i/want/
 

read more on this in the man-page:
${parameter/pattern/string}
Pattern substitution. The pattern is expanded to produce a pat-
tern just as in pathname expansion. Parameter is expanded and
the longest match of pattern against its value is replaced with
string. If pattern begins with /, all matches of pattern are
replaced with string. Normally only the first match is
replaced. If pattern begins with #, it must match at the begin-
ning of the expanded value of parameter. If pattern begins with
%, it must match at the end of the expanded value of parameter.
If string is null, matches of pattern are deleted and the / fol-
lowing pattern may be omitted. If parameter is @ or *, the sub-
stitution operation is applied to each positional parameter in
turn, and the expansion is the resultant list. If parameter is
an array variable subscripted with @ or *, the substitution
operation is applied to each member of the array in turn, and
the expansion is the resultant list.