linux bash which
https://linuxize.com/post/linux-which-command/
Linux which command is used to identify the location of a given executable that is executed when you type the executable name (command) in the terminal prompt.
The command searches for the executable specified as an argument in the directories listed in the PATH environment variable
# which [OPTIONS] FILE_NAME...
$ which ping
/sbin/ping
$which curl
/usr/bin/curl
$ which netcat uptime
netcat not found
/usr/bin/uptime
$ which -a touch
/usr/bin/touch
/usr/bin/touch
$ echo $PATH
➜ ~ echo $PATH
/Users/xgqfrms-mbp/.yarn/bin:
/Users/xgqfrms-mbp/.config/yarn/global/node_modules/.bin:
/Users/xgqfrms-mbp/.nvm/versions/node/v10.16.3/bin:
/Users/xgqfrms-mbp/.cargo/bin:/bin:/usr/bin:/usr/local/bin:
/Users/xgqfrms-mbp/anaconda3/bin:
/Users/xgqfrms-mbp/.cargo/bin:/Library/Frameworks/Python.framework/Versions/3.7/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:
/Users/xgqfrms-mbp/Documents/Flutter/flutter/bin:
/Users/xgqfrms-mbp/Documents/Flutter/flutter/bin
➜ ~
https://linuxize.com/post/how-to-set-and-list-environment-variables-in-linux/
https://linuxize.com/post/echo-command-in-linux-with-examples/
https://linuxize.com/post/linux-touch-command/
https://linuxize.com/post/how-to-create-symbolic-links-in-linux-using-the-ln-command/
refs
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