Timeout a command in bash without unnecessary delay
I think this is precisely what you are asking for: http://www.bashcookbook.com/bashinfo/source/bash-4.0/examples/scripts/timeout3
bash
Virtualenv not compatible with this system or executable
My limited undestanding is that my python interpreter and packages are managed under Anaconda using Conda package manager, and my virtualenv was originally installed using pip.. uninstalling virtualenv with pip and re-installing with conda fixed the issue
What does ‘bash -c’ do?
Quoting from man bash: -c string If the -c option is present, then commands are read from string.If there are arguments after the string, they are assigned to the positional parameters, starting with $0. The command quoted by you would append the text in heredoc (i.e. the text in VirtualHost tag) to the file /etc/apache2/sites-available/magento-store.com.
Integer expression expected error in shell script
You can use this syntax:
How to enable Bash in Windows 10 developer preview?
To enable bash in Windows 10: Click the Start button , click Control Panel, click Programs, and then click Turn Windows features on or off. Enable Windows Subsystem for Linux To get Bash installed, open Command Prompt and type “bash” For More Information visit : Announcing Windows 10 Insider Preview Build 14316 Run Bash on … Read more
Git Bash doesn’t see my PATH
Got it. As a Windows user, I’m used to type executable names without extensions. In my case, I wanted to execute a file called cup.bat. In a Windows shell, typing cup would be enough. Bash doesn’t work this way, it wants the full name. Typing cup.bat solved the problem. (I wasn’t able to run the file though, since apparently bash … Read more
bash which OR operator to use – pipe v double pipe
| isn’t an OR operator at all. You could use ||, though: This is equivalent to an if: By the way — consider making a habit of using type (a shell builtin) rather than which (an external command). type is both faster and has a better understanding of shell behavior: If you have an ansible command that’s provided by, say, a shell function invoking the real command, which won’t know … Read more
Error handling in Bash
Use a trap! …then, whenever you create a temporary file: and $temp_foo will be deleted on exit, and the current line number will be printed. (set -e will likewise give you exit-on-error behavior, though it comes with serious caveats and weakens code’s predictability and portability). You can either let the trap call error for you (in which case it uses the default … Read more
How to parse XML in Bash?
This is really just an explaination of Yuzem’s answer, but I didn’t feel like this much editing should be done to someone else, and comments don’t allow formatting, so… Let’s call that “read_dom” instead of “rdom”, space it out a bit and use longer variables: Okay so it defines a function called read_dom. The first line makes … Read more
How to open Emacs inside Bash
Emacs takes many launch options. The one that you are looking for is emacs -nw. This will open Emacs inside the terminal disregarding the DISPLAY environment variable even if it is set. The long form of this flag is emacs –no-window-system. More information about Emacs launch options can be found in the manual.