How can I assign the output of a command to a shell variable?
Among those, there are bash, dash, ksh, yash, mksh, zsh (though for many of those, compliance to the sh specification has to be enabled via some option, or by calling them as sh). var=$(any shell code) It …
bash - What is the difference between `cat EOF` and `cat ...
2022年6月9日 · 7 I'm used to use cat > /path/to/file << EOF when I, in a bash script, printed more than one line into a file... I was checking old code of my company and I found the cat EOT instruction …
bash - How do I add environment variables? - Ask Ubuntu
2011年8月27日 · Shell config files such as ~/.bashrc, ~/.bash_profile, and ~/.bash_login are often suggested for setting environment variables. While this may work on Bash shells for programs started …
Read from .env file and set as bash variables - Ask Ubuntu
2022年1月29日 · How can I read an .env file and set the variables as bash variables? Currently, I'm able to read it and export them as environment variables. If the file contains the variables: …
Bash alternative to trim newline \n and extra white-space
2021年3月14日 · Bash alternative to trim newline \n and extra white-space Ask Question Asked 4 years, 9 months ago Modified 4 years, 8 months ago
bash - Remove specific word in variable - Unix & Linux Stack ...
2016年9月23日 · In a bash script, how can I remove a word from a string, the word would be stored in a variable. FOO="CATS DOGS FISH MICE" WORDTOREMOVE="MICE"
Where is .bash_profile? - Ask Ubuntu
Open an interactive bash shell and run help . for more information. The reason you don't usually have .bash_profile on Ubuntu even if you have bash -specific commands that you want to run on login is …
bash - How do I remove a directory and all its contents ...
In bash all I know is that rmdir directoryname will remove the directory but only if it's empty. Is there a way to force remove subdirectories?
bash - What is the difference between env, setenv, export ...
Recently I noticed we have 3 options to set environment variables: export envVar1=1 setenv envVar2 2 env envVar3=3 If there are any other ways, please enlighten us. When should I prefer one over ...
Cannot successfully source .bashrc from a shell script
2011年10月5日 · It is a better practice to use the #!/usr/bin/env bash form but this way you cannot start the shell with arguments. Using the -i has it's own set of consequences, among them, programs will …