{var%20f='http://v.t.sina.com.cn/share/share.php?appkey=1515056452',u=z||d.location,p=['&url=',e(u),'&title=',e(t||d.title),'&source=',e(r),'&sourceUrl=',e(l),'&content=',c||'gb2312','&pic=',e(p||'')].join('');function%20a(){if(!window.open([f,p].join(''),'mb',['toolbar=0,status=0,resizable=1,width=440,height=430,left=',(s.width-440)/2,',top=',(s.height-430)/2].join('')))u.href=[f,p].join('');};if(/Firefox/.test(navigator.userAgent))setTimeout(a,0);else%20a();})(screen,document,encodeURIComponent,'','','https://www.manongdao.com/data/attach/logo/logo.png', '推荐 ▲ chillily 的问题《When does a sub shell inherits its parent shell en》','https://www.manongdao.com/q-1125070.html','页面编码gb2312|utf-8默认gb2312'));){kind=link}
Under what circumstances is the environment of the shell passed to the sub-shell?
相关问题
- How to get the return code of a shell script in lu
- JQ: Select when attribute value exists in a bash a
- Invoking Mirth Connect CLI with Powershell script
- Emacs shell: save commit message
- bash print whole line after splitting line with if
相关文章
- 使用2台跳板机的情况下如何使用scp传文件
- Why does popen() invoke a shell to execute a proce
- In IntelliJ IDEA, how can I create a key binding t
- Check if directory exists on remote machine with s
- shell中反引号 `` 赋值变量问题
- How get the time in milliseconds in FreeBSD?
- Reverse four length of letters with sed in unix
- Launch interactive SSH bash session from PHP
A subshell always gets all variables from the parent shell.
man bashwill describe all the circumstances in which a subshell is used, which are mainly:command &command | commandand( command )The so called environment only includes environment variables (
export variable), and is passed on to every sub-process. Even when invokingbash -c command, which is not a sub-shell but a completely new bash instance.In both cases changed values are not passed back to the parent process.