automated terminal push

landing/docs/Linux-Commands/Terminal-Experience/113-the-alias-command.md

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+# The `alias` command
+
+The `alias` command lets you create shortcuts for commands or define your own commands.  
+This is mostly used to avoid typing long commands.
+
+### Examples:
+
+1. To show the list of all defined aliases in the reusable form `alias NAME=VALUE` :
+
+```
+alias -p
+```
+
+2. To make `ls -A` shortcut:
+
+```
+alias la='ls -A'
+```
+
+### Syntax:
+
+```
+alias [-p] [name[=value]]
+```
+
+### Setting Persistent Options:
+
+As with most Linux custom settings for the terminal, any alias you defined is only applied to the current opening terminal session.
+
+For any alias to be active for all new sessions you need to add that command to your rc file to be executed in the startup of every new terminal.
+this file can be as follows:
+- **Bash**: ~/.bashrc
+- **ZSH**: ~/.zshrc
+- **Fish** – ~/.config/fish/config.fish
+
+you can open that file with your favorite editor as follows:
+
+```
+vim ~/.bashrc
+```
+type your commands one per line, then save the file and exit.
+the commands will be automatically applied in the next session.
+
+If you want to apply it in the current session, run the following command:
+```
+source ~/.bashrc
+```
+
+### Opposite command:
+To remove predefined alias you can use `unalias` command as follows:
+```
+unalias alias_name
+```
+
+to remove all aliases 
+```
+unalias -a
+```