Shell Programming and Scripting

var1="abc001: text goes here yyy003: text goes here uuuu004: text goes here"

awk '{for (i=1;i<=NF;i++) printf $i~":"?"\n"$i" ":$i" "}' <<< "$var1"| awk 'NF {sub(/:/,x);print}'
abc001 text goes here
yyy003 text goes here
uuuu004 text goes here

awk '{ gsub(/([^ ]*): /, "\n\1"); sub(/^\n/,""); } 1'

awk '{gsub(/[a-zA-Z]+[0-9]+/,"\n&");gsub(/:|^\n/,x)}1' <<< "$var1"
abc001 text goes here
yyy003 text goes here
uuuu004 text goes here

perl -0pe 's/://;s/(\w+):/\n$1/g' <<< "$var1"

echo $var1  | awk 'gsub(/\:/,X) gsub(/here /,"here\n");'

abc001 text goes here
yyy003 text goes here
uuuu004 text goes here

sed -r 's/://;s/(\w+):/\n\1/g' <<< "$var1"