How do you append to an already existing string?

I want append to a string so that every time I loop over it will add say "test" to the string.

Like in PHP you would do:

$teststr = "test1n"
$teststr .= "test2n"
echo = "$teststr"


echos:

test1
test2


But I need to do this in a shell script

6 Answers
6

In classic sh, you have to do something like:

s=test1
s="$stest2"


(there are lots of variations on that theme, like s="$s""test2")

s="$s""test2"

In bash, you can use +=:

s=test1
s+=test2


$ string="test"
$ string="$stringtest2"
$ echo $string
testtest2


#!/bin/bash
message="some text"
message="$message add some more"

echo $message


some text add some more

teststr=$'test1n'
teststr+=$'test2n'
echo "$teststr"


VAR=$VAR"$VARTOADD(STRING)"
echo $VAR


#!/bin/bash

msg1=$1 #First Parameter
msg2=$2 #Second Parameter

concatString=$msg1"$msg2" #Concatenated String
concatString2="$msg1$msg2"

echo $concatString
echo $concatString2


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