发件人： Bernhard Voelker

发送时间： 2018-01-03 21:11

收件人： lil373@chinaunicom.cn; 29939@debbugs.gnu.org

主题： Re: bug#29939: HELP:enter a "ls"command, then the os connection will closed

On 01/02/2018 07:25 AM, lil373@chinaunicom.cn wrote:

>     When I enter a "ls " command at the directory "/root",the OS connection will closed.

 

are you sure "ls" is /usr/bin/ls?

 

  $ type ls

  ls is /usr/bin/ls

 

I.e., it could be aliased to something weird, e.g. a shell function which

calls '/usr/bin/ls' under the hood but "exit"s in certain cases:

 

  $ _ls() { /usr/bin/ls ${1+"$@"} | grep . || exit; }

 

  $ alias ls=_ls

 

  $ type ls

  ls is aliased to `_ls'

 

  $ ls

  bin

  file

  home

  ...

 

  $ ls ENOENT

  /usr/bin/ls: cannot access 'ENOENT': No such file or directory

  logout

 

Other than that, I don't see how the spawned 'ls' process could lead

to a logout of the calling shell process.

 

Have a nice day,

Berny