日期：2012 年 5 月 3 日

from how split a string in bash?”

1. Use # and % modifiers to ${}. I’ll do my example on colon instead of space:
   

   $ x=a:b:c
$ echo ${x%:*}
a:b
$ echo ${x#*:}
b:c

   The bit after the % or # is more like a shell glob than a regular expression, in case you want to get fancy there.

2. #!/bin/bash

   thing="once upon a time"

   set -- $thing

   foo=$1
   shift
   bar=$@

   echo "foo: $foo"
   echo "bar: $bar"

   prints
foo: once
bar: upon a time