Add text in every word of a multi value variable-CodePudding

I have the following variable

var="text1 value1.text value2"

I want to add specific characters at the start and the end of every word in variable

Τhe desired result I want it to be the following

[text1] [value1.text] [value2]

As far I can only add text only in all variable content

echo [$var]

output

[text1 value1.text value2]

Can you help me how to do it

preferably with awk

CodePudding user response：

You may use this awk:

awk '{for (i=1; i<=NF;   i) $i = "[" $i "]"} 1' <<< "$var"

[text1] [value1.text] [value2]

Or a gnu-awk solution without looping:

awk -v RS='[[:space:]]' '{$0 = "[" $0 "]"; ORS=RT} 1' <<< "$var"

[text1] [value1.text] [value2]

CodePudding user response：

printf "[%s] " "$var"

Disadvantage: There is one trailing space in output.

CodePudding user response：

set -f 
var="text1 value1.text value2"
printf -v var "[%s] " $var
echo "${var% }"

Output:

[text1] [value1.text] [value2]

CodePudding user response：

It's not clear if you want to change the value of var or just output the contents of var with the square brackets added so take your pick:

$ var='text1 value1.text value2'

$ echo "[${var// /] [}]"
[text1] [value1.text] [value2]

$ var="[${var// /] [}]"
$ echo "$var"
[text1] [value1.text] [value2]