Shellscript: meaning of $()

Question

I see in a shell script code like:

for i in $(seq 1 5); do
  # do something
done

I am used to writing same logic as:

for i in `seq 1 5 | xargs`; do
  # do something
done

Is there a difference between both the approaches?

http://stackoverflow.com/questions/4708549/shell-programming-whats-the-difference-between-command-and-command — user123444555621, May 24 '14 at 06:48
Using `xargs` is pointless; just ``for i in `seq 1 5`; do`` would do. — Jonathan Leffler, May 24 '14 at 06:56

score 0 · Answer 1 · answered May 24 '14 at 06:54

0

This $() approach seems to be the modern approach as it supports nesting. More details here: http://mywiki.wooledge.org/BashFAQ/082

answered May 24 '14 at 06:54

Subhash Chandran

1 Answers1