environment-variables

问题 In bash, if I define a variable inside a script (say, set_var.sh ), I can choose whether those definitions persist after "running" the script. This will depend on how I "run" the script, the options being: sh set_var.sh (variables do not persist) ./set_var.sh (variables do not persist, same as point 1) source set_var.sh (variables persist) This is irrespective from the variable being exported to the environment or not in set_var.sh . Can the same as items 1 and 3 above be achieved with

问题 In bash, if I define a variable inside a script (say, set_var.sh ), I can choose whether those definitions persist after "running" the script. This will depend on how I "run" the script, the options being: sh set_var.sh (variables do not persist) ./set_var.sh (variables do not persist, same as point 1) source set_var.sh (variables persist) This is irrespective from the variable being exported to the environment or not in set_var.sh . Can the same as items 1 and 3 above be achieved with

问题 I need to write a shell script to set environment variable and modify path variable permanently. Is there in any way to modify bashrc file through script? 回答1: Yes, you write a script that appends to .bashrc with the >> redirection operator: echo Your Text >> ~/.bashrc See also I/O Redirection 回答2: Is there in any way to modify bashrc file through script? , you don't need to do that. Just manually set the required variable in .bashrc once that will do. 回答3: I would prefer modifying the

问题 I need to write a shell script to set environment variable and modify path variable permanently. Is there in any way to modify bashrc file through script? 回答1: Yes, you write a script that appends to .bashrc with the >> redirection operator: echo Your Text >> ~/.bashrc See also I/O Redirection 回答2: Is there in any way to modify bashrc file through script? , you don't need to do that. Just manually set the required variable in .bashrc once that will do. 回答3: I would prefer modifying the

问题 I don't understand how the environment is set on compute nodes when running with MPI under a scheduler. I do: mpirun -np 1 --hostfile ./hostfile foo.sh with foo.sh : #!/usr/bin/env zsh echo $LD_LIBRARY_PATH Then I do not recover the LD_LIBRARY_PATH I have got in an interactive shell... What are the initialization files that are executed/sourced at connection with MPI? note: I am under zsh, and I tried to put things in .zprofile or .zshenv instead of .zshrc, but it doesn't seem to make a

问题 In my next.config.js, I have a part that looks like this: module.exports = { serverRuntimeConfig: { // Will only be available on the server side mySecret: 'secret' }, publicRuntimeConfig: { // Will be available on both server and client PORT: process.env.PORT, GOOGLE_CLIENT_ID: process.env.GOOGLE_CLIENT_ID, BACKEND_URL: process.env.BACKEND_URL } I have a .env file and when run locally, the Next.js application succesfully fetches the environment variables from the .env file. I refer to the env

问题 I have an input string for my Golang CLI tool with some references to environment variables in bash syntax ( $VAR and ${VAR} ), e.g.: $HOME/somedir/${SOME_VARIABLE}dir/anotherdir-${ANOTHER_VARIABLE} What is the most efficient way to interpolate this string by replacing environemnt variables references with actual values? For previous example it can be: /home/user/somedir/4dir/anotherdir-5 if HOME=/home/user , SOME_VARIABLE=4 and ANOTHER_VARIABLE=5 . Right now I'm using something like: func

问题 I have an input string for my Golang CLI tool with some references to environment variables in bash syntax ( $VAR and ${VAR} ), e.g.: $HOME/somedir/${SOME_VARIABLE}dir/anotherdir-${ANOTHER_VARIABLE} What is the most efficient way to interpolate this string by replacing environemnt variables references with actual values? For previous example it can be: /home/user/somedir/4dir/anotherdir-5 if HOME=/home/user , SOME_VARIABLE=4 and ANOTHER_VARIABLE=5 . Right now I'm using something like: func

问题 At this point, when a commit happens to the Master branch, a build pipeline will generate an artifact based on "ng build --prod", so this artifact uses the production configuration for the project. After that, the artifact will be deployed to the test and production environments. For the test environment, I want the code to use "environment.dev.ts" and for production "environment.prod.ts". How can I achieve that? 回答1: There are many ways. I am doing it using "Tokens" My production environment

问题 At this point, when a commit happens to the Master branch, a build pipeline will generate an artifact based on "ng build --prod", so this artifact uses the production configuration for the project. After that, the artifact will be deployed to the test and production environments. For the test environment, I want the code to use "environment.dev.ts" and for production "environment.prod.ts". How can I achieve that? 回答1: There are many ways. I am doing it using "Tokens" My production environment