What is the meaning of $? in a shell script? - Unix & Linux Stack …
Feb 20, 2011 · When going through one shell script, I saw the term "$?". What is the significance of this term?
Difference between Login Shell and Non-Login Shell?
May 8, 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 …
shell - What is the "eval" command in bash? - Unix & Linux Stack …
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..
How exactly to use screen in linux / SSH shell?
Apr 5, 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. …
shell - How to check OS and version using a Linux command
What is the Linux command to check the server OS and its version? I am connected to the server using shell.
How do I run a command as the system administrator (root)
On many systems booting into single user mode will give the user access to a root shell without prompting for a password. Notably, systemd -based systems will prompt you for the root …
怎样解决 win10 事件 ID为:10016 的错误？ - 知乎
3.win+x打开控制面板，在右上角输入管理工具，找到组件服务右键以管理员身份运行，依次展开组件服务→计算机→我的电脑→DCOM配置，找打Immersive Shell右键点击属性，切换到安全选 …
shellからjarファイルを実行する方法 | teratail
Jun 25, 2020 · #やりたいこと バッチプログラムを作成し、jarファイルを作成する ただし、mainクラスは 複数 ある 作成したjarファイルをshellから実行したい #わからないこと そも …
How can I assign the output of a command to a shell variable?
A shell assignment is a single word, with no space after the equal sign. So what you wrote assigns an empty value to thefile; furthermore, since the assignment is grouped with a …
shell - Safely save and restore environment variables - Unix
Oct 26, 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 && …