How to load parts of bash alias only when logging in via ssh [duplicate]

Question

As the title states, is it possible to have an alias only load when I access the machine through ssh, or better yet, only from a specific computer through ssh?

Answer 1

In .bashrc (or where you define the aliases), you can make it conditional based on the variable SSH_CONNECTION, which is set only for ssh connections. For example:

if [[ $SSH_CONNECTION == *"your-IP"* ]]; then
  alias ll="ls -l"
  # your other aliases
fi

Answer 2

As i interpret your question, when you ssh to a linux box with an user other than root, the logged in user should have only limited access to the commands and you also want aliases to that commands. The possible solution is

1. Create a restricted shell by copying bash file in /bin directory cp /bin/bash /bin/rbash
2. Modify the user bash to the restricted bash useradd -s /bin/rbash , in case of existing user usermod -s /bin/rbash . After this the user will be able to access only his home directory.
3. Create a directory under /home//commands
4. Now to restrict the access of the commands add the following lines to /home//.bash_profile file PATH=$HOME/commands export PATH
5. Create softlinks to the commands in /home//commands folder which you want to give permission to the user e.g: ln -s /bin/date /home//commands/
6. As logged in user can modify the /home//.bash_profile you have to make it immutable so that user cannot access it. chattr +i /home//.bash_profile