Shell中统计字符串中单词的个数的几种方法

[linux@host ~]# echo 'one two three four five' | wc -w5

[linux@host ~]# echo 'one two three four five' | awk '{print NF}'5

[linux@host ~]# s='one two three four five' [linux@host ~]# set ${s}[linux@host ~]# echo $#5

[linux@host ~]# s='one two three four five' [linux@host ~]# a=($s)[linux@host ~]# echo ${#a[@]}5

[linux@host ~]# s='one two three four five' [linux@host ~]# echo $s | tr ' ' '/n' | wc -l5