On Linux, source different .zshrc files for different apps

Question

Based on three questions:

• Use different profiles with ZSH (in different terminal apps), but deisgned only for macOS
• Different tmux configs for different sessions?, but I want to use different .zshrc files for different terminal apps (Deepin Terminal, Tilix and VSCode's integrated terminal)
• .desktop file with .bashrc environment, but unsuccessfull.

tl:dr – for example:

• .zshrc

if [ -f /usr/bin/tilix ]; then
  if [ -f ~/tilix.zshrc ]; then
    source ~/tilix.zshrc
  fi
elif [ -f /usr/bin/deepin-terminal ]; then
  if [ -f ~/deepin-terminal.zshrc ]; then
    source ~/deepin-terminal.zshrc
  fi
elif [ -f /usr/bin/code-insiders ]; then
  if [ -f ~/code-insiders.zshrc ]; then
    source ~/code-insiders.zshrc
  fi
else
    source ~/tilix.zshrc
fi

• And the files Deepin Terminal's and Tilix's desktop files:

Exec=bash -c 'source $HOME/deepin-terminal.zshrc && deepin-terminal'
Exec=bash -c 'source $HOME/tilix.zshrc && tilix'

• VSCode's settings.json:

{
  "terminal.integrated.shell.linux": "source $HOME/code-insiders.zshrc && /usr/bin/zsh"
}

But nothing worked.

Maybe I should use devilspie, but I am not sure if it will work.

Answer 1

From the terminal side

In the configuration of each terminal or terminal launcher, arrange to set an environment variable, e.g. TERM_SUBTYPE=tilix or TERM_SUBTYPE=deepin or TERM_SUBTYPE=vscode. In your .zshrc, check the value of this variable:

case $TERM_SUBTYPE in
  tilix) …;;
  …
  '') …;;
esac

The '') line is the case when nothing has set TERM_SUBTYPE. You can leave it out if you have nothing to do in this case.

From the shell side

The terminal emulator is usually the parent of the shell, so check the parent process.

case ${$(ps -p $PPID -o comm=):t} in
  tilix) …;;
  deepin-terminal) …;;
  code-insiders) …;;
  *) …;
esac

The *) line is a fallback if the parent process is not one of the recognized cases. You can leave it out if you have nothing to do in this case.