[文本处理] ./x.sh arithmetic expression: expecting primary [复制链接]

1cpuer

腰缠万贯

论坛徽章:: 6

发表于 2018-08-06 21:10 |显示全部楼层

# [ /home/soio/1bs/file-d ] {2018-08-06 21:05:26}
: 1533560726:0;➜  ./for3.sh Mon Tue Wed Thu Fri
./for3.sh: 4: ./for3.sh: arithmetic expression: expecting primary: "i++"

#--#
# [ /home/soio/1bs/file-d ] {2018-08-06 21:06:36}
: 1533560796:0;➜  cat for3.sh
i=1
for day
do
echo "Weekday $((i++)) : $day"
done

#--#
# [ /home/soio/1bs/file-d ] {2018-08-06 21:07:00}
: 1533560820:0;➜  sh for3.sh Mon Tue Wed Thu Fri
for3.sh: 4: for3.sh: arithmetic expression: expecting primary: "i++"

#--#
# [ /home/soio/1bs/file-d ] {2018-08-06 21:07:16}
: 1533560836:0;➜  zsh for3.sh Mon Tue Wed Thu Fri
Weekday 1 : Mon
Weekday 2 : Tue
Weekday 3 : Wed
Weekday 4 : Thu
Weekday 5 : Fri

# ./ and sh 无法运行
zsh and bash 可行

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o枫叶o飘零

巨富豪门

论坛徽章:: 39

发表于 2018-08-07 09:19 |显示全部楼层

which sh
ll /bin/sh
查一下

实战分享：从技术角度谈机器学习入门| 【大话IT】RadonDB低门槛向MySQL集群下战书 | ChinaUnix打赏功能已上线！ | 新一代分布式关系型数据库RadonDB知多少？

1cpuer

腰缠万贯

论坛徽章:: 6

发表于 2018-08-07 10:10 |显示全部楼层

本帖最后由 1cpuer 于 2018-08-07 10:27 编辑

回复 2# o枫叶o飘零

# [ /home/soio/1bs/awks ] {2018-08-07 10:09:57}
: 1533607797:0;➜  which sh
/bin/sh

#--#
# [ /home/soio/1bs/awks ] {2018-08-07 10:10:07}
: 1533607807:0;➜  ll /bin/sh
lrwxrwxrwx 1 root root 4 2017-06-09 00:12:36 /bin/sh -> dash

https://zhidao.baidu.com/question/588460573.html

https://blog.csdn.net/skdkjzz/article/details/17073151

# [ /home/soio/1bs/file-d ] {2018-08-07 10:14:44}
: 1533608084:0;➜  ln -s bash /bin/sh -f

#--#
# [ /home/soio/1bs/file-d ] {2018-08-07 10:23:16}
: 1533608596:0;➜  sh for3.sh Mon Tue Wed Thu Fri
Weekday 1 : Mon
Weekday 2 : Tue
Weekday 3 : Wed
Weekday 4 : Thu
Weekday 5 : Fri

#--#
# [ /home/soio/1bs/file-d ] {2018-08-07 10:23:19}
: 1533608599:0;➜  ll /bin/sh
lrwxrwxrwx 1 root root 4 2018-08-07 10:23:16 /bin/sh -> bash

实战分享：从技术角度谈机器学习入门| 【大话IT】RadonDB低门槛向MySQL集群下战书 | ChinaUnix打赏功能已上线！ | 新一代分布式关系型数据库RadonDB知多少？

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