Bash substring replacement
v="1.2.3"
parts=(${v//./ })
#parts == "1 2 3"
Replace first occurence
${string/substring/replacement}
Replace all occurences
${string//substring/replacement}
v="1.2.3"
parts=(${v//./ })
#parts == "1 2 3"
${string/substring/replacement}
${string//substring/replacement}