Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
872 views
in Technique[技术] by (71.8m points)

loops - How to iterate over list which contains whitespaces in bash

Could you please tell me how to iterate over list where items can contain whitespaces?

x=("some word", "other word", "third word")
for word in $x ; do
    echo -e "$word
"
done

how to force it to output:

some word
other word
third word

instead of:

some
word
(...)
third
word
See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

To loop through items properly you need to use ${var[@]}. And you need to quote it to make sure that the items with spaces are not split: "${var[@]}".

All together:

x=("some word" "other word" "third word")
for word in "${x[@]}" ; do
  echo -e "$word
"
done

Or, saner (thanks Charles Duffy) with printf:

x=("some word" "other word" "third word")
for word in "${x[@]}" ; do
  printf '%s

' "$word"
done

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...