I have an array declared in my script.
NAME[0]=Deepak
NAME[1]=Renuka
NAME[2]=Joe
NAME[3]=Alex
NAME[4]=Amir
echo "All Index: ${NAME[*]}"
echo "All Index: ${NAME[@]}"
There are two ways to print whole array which is shown above. Can some please write the difference between those methods?
echo "All Index: ${NAME[*]}" equals to echo "All Index: ${NAME[0]} ${NAME[1]} ${NAME[2]} ${NAME[3]} ${NAME[4]}"echo "All Index: ${NAME[@]}" equals to echo "All Index: ${NAME[0]}" "${NAME[1]}" "${NAME[2]}" "${NAME[3]}" "${NAME[4]}" if the first character of IFS variable is a space (default)You can see the execution result in copy.sh.
The default value of IFS variable is $' \t\n'.
${array[*]} and $* output strings splited by the first character of IFS variable.
It is also possible to change the character to split.
NAME[0]=Deepak
NAME[1]=Renuka
NAME[2]=Joe
NAME[3]=Alex
NAME[4]=Amir
IFS=:
echo "All Index: ${NAME[*]}"
# Output: `All Index: Deepak:Renuka:Joe:Alex:Amir`
IFS=
echo "All Index: ${NAME[*]}"
# Output: `All Index: DeepakRenukaJoeAlexAmir`
IFS=$', \t\n'
echo "All Index: ${NAME[*]}"
# Output: `All Index: Deepak,Renuka,Joe,Alex,Amir`
