Issue
I have this string stored in a variable:
IN="bla@some.com;john@home.com"
Now I would like to split the strings by ;
delimiter so that I have:
ADDR1="bla@some.com"
ADDR2="john@home.com"
I don't necessarily need the ADDR1
and ADDR2
variables. If they are elements of an array that's even better.
After suggestions from the answers below, I ended up with the following which is what I was after:
#!/usr/bin/env bash
IN="bla@some.com;john@home.com"
mails=$(echo $IN | tr ";" "\n")
for addr in $mails
do
echo "> [$addr]"
done
Output:
> [bla@some.com]
> [john@home.com]
There was a solution involving setting Internal_field_separator (IFS) to ;
. I am not sure what happened with that answer, how do you reset IFS
back to default?
RE: IFS
solution, I tried this and it works, I keep the old IFS
and then restore it:
IN="bla@some.com;john@home.com"
OIFS=$IFS
IFS=';'
mails2=$IN
for x in $mails2
do
echo "> [$x]"
done
IFS=$OIFS
BTW, when I tried
mails2=($IN)
I only got the first string when printing it in loop, without brackets around $IN
it works.
Solution
You can set the internal field separator (IFS) variable, and then let it parse into an array. When this happens in a command, then the assignment to IFS
only takes place to that single command's environment (to read
). It then parses the input according to the IFS
variable value into an array, which we can then iterate over.
This example will parse one line of items separated by ;
, pushing it into an array:
IFS=';' read -ra ADDR <<< "$IN"
for i in "${ADDR[@]}"; do
# process "$i"
done
This other example is for processing the whole content of $IN
, each time one line of input separated by ;
:
while IFS=';' read -ra ADDR; do
for i in "${ADDR[@]}"; do
# process "$i"
done
done <<< "$IN"
Answered By - Johannes Schaub - litb Answer Checked By - Candace Johnson (PHPFixing Volunteer)
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