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iprocoder

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注册时间： 2014-01-28

帖子： 4

$- 变量的含义

我想问一下在shell中 $- 变量的含义，有没有什么 man page。

PS：默认值
user $ echo $-
himBH

cjxgm

忙，却还想养猫？

所在地： 杭州

注册时间： 2011-08-19

帖子： 417

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Re: $- 变量的含义

man bash
/\$-                  # 可以看到 i 表示 interactive
n                     # 可以看到：The current set of options may be found in $-.
往上翻，可以看到
              -h      Remember  the location of commands as they are looked up
                      for execution.  This is enabled by default.
              -m      Monitor mode.  Job control is enabled.  This  option  is
                      on  by  default  for  interactive shells on systems that
                      support it (see JOB  CONTROL  above).   Background  pro‐
                      cesses  run  in a separate process group and a line con‐
                      taining their exit status is printed upon their  comple‐
                      tion.
              -B      The shell performs brace expansion (see Brace  Expansion
                      above).  This is on by default.
              -H      Enable !  style history substitution.  This option is on
                      by default when the shell is interactive.

最近编辑记录 cjxgm (2014-02-07 23:18:50)

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Giumo Clanjor (哆啦比猫/兰威举)
Where there is a hacker, there is art. | Dogfooding myself. (C++ / Lua / Perl / Rust)