8 Beal 2012 · I understand the basic difference between an interactive shell and a non-interactive shell. But what exactly differentiates a login shell from a non-login shell? Can you give …

20 Feabh 2011 · When going through one shell script, I saw the term "$?". What is the significance of this term?

当你写脚本打算在不同的 shell 环境下运行时，了解这些细微的差别和兼容性问题是很重要的。 如果你想编写兼容 POSIX 的脚本，在比较字符串时最好使用单等号 = 或者用双方括号的表达式。 …

shell infrastructure host是Windows的核心组件，用于支持开始菜单、任务栏和操作系统的其他重要图形元素，可执行镜像为 sihost.exe，关闭该进程会导致系统无法正常运行，一般会在查看 …

5 Aib 2020 · Lets say I SSH to my linux shell. Inside it I want to run a program that will run for 8 hours: I create a "detached screen" by entering screen and then crtl+a, crtl+d to deattach it. …

在化学中，开壳（open-shell）和闭壳（closed-shell）是什么意思？ 在一些化学领域的文献里，经常会提到自由基是一个open-shell（开壳）的物种，这里的「open-shell」这个概念是什么意 …

What can you do with the eval command? Why is it useful? Is it some kind of a built-in function in bash? There is no man page for it..

26 DFómh 2023 · I have a script that parses a rudimentary .env file and exports its contents as environment variables, before taking further action: set -eu test -f .env && load_dotenv …

前几天，知名游戏媒体IGN为 《Mortal Shell》打出了8分的评价，他们认为8月18日上市的《Mortal Shell》是对《黑暗之魂》 最忠诚的致敬，而且游戏也拥有很多十分巧妙的新想法。这款游戏虽 …

19 Meith 2015 · Interestingly, the shell will even do the twiddle thing ~ and << left and >> right SHIFTs. And so if a is true OR b^100 is true, the expansion evals to 1, matches the comparison …