I am trying to run the command split from within GNU screen in order to create a new horizontal region. This command is instead interpreted as a call to the Unix split utility at /usr/bin/split for splitting files. The issue is that I want to start screen with a custom configuration using screen -c custom.conf where this configuration sets up a split environment of the form:

# custom.conf
screen 0 
exec some-command-here
focus next
screen 1
exec some-other-command
focus next

This custom configuration works fine for every step except the first, where it tries to run the split utility. My question is therefore whether there is: (a) another screen command to create a split that doesn't have utility conflicts; or (b) a way to call the screen split command that will only be interpreted by screen; or (c) a way to bypass the part of PATH containing /usr/bin/split for just this command.

The keyboard bindings for generating a horizontal split work fine, but as far as I'm aware they can't be added to a script. For further details, I am trying to set up vim for use as an IDE for Python/Julia/etc, following the guide at http://www.juliabloggers.com/vim-as-ide-for-julia/.

The lateral solution to this problem is to use tmux or another terminal multiplexer, but I would like to use screen. A solution for tmux might be:

tmux new-session -d -s session_name some-command-here
tmux split-window -t session_name some-other-command
tmux select-pane -t 0
tmux attach-session -t session_name

There is a default key binding for split functionality. From man screen, "DEFAULT KEY BINDINGS":

C-a S (split) Split the current region horizontally into two  new ones.  
See also only, remove, focus.
  • Yes indeed, but as I detailed in the question I am trying to automate splitting on start up. I do not want to have to type the key binding to create the split, I want to script it to split automatically. – Lewis Jun 30 '17 at 11:22
  • @Lewis sorry, I will update my answer. – styrofoam fly Jun 30 '17 at 13:49

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