Shell – Get default ubuntu motd in fish shell

fishmotdshell

I would like to have Ubuntu's MOTD in the fish shell.

Ubuntu's default is as follows:

Default Ubuntu MOTD

That is essentially what I would like to see when open up my terminal (terminator, which loads fishfish)
As far as I can make out (Based on the information here), the default shell executes pam_motd, which in turn executes a bunch of scripts from /etc/update-motd.d

I don't know how to do this in the fish shell with any confidence. I haven't been able to find any information by searching.

Cheers

Best Answer

Put this in your ~/.config/fish/config.fish:

function fish_greeting
  status --is-login
  if [ $status != 0 ] 
    cat /run/motd.dynamic
  end 
end

This will make sure that you don't get the double motd when logging in remotely.

Related Solutions

Shell – how to reference a variable in fish shell with a default fallback

I believe you need temponary variable (or a function). If $TEST doesn't exist, it's expanded to nothing, and $test_or only contains 1. It would be nice to have real way of doing that, but currently the syntax is issue, and it doesn't appear it's really needed for most purposes.

set test_or $TEST 1
echo $test_or[1]

Also, if all you want is to modify $TEST if it doesn't exist already, you can use set -q.

set -q TEST; or set TEST 1
echo $TEST

Fish Shell – Fix Exec Format Error

You need a shebang line if the executable file cannot be run natively by the kernel. The kernel can only run machine code in a specific format (ELF on most Unix variants), or sometimes other formats (e.g. on Linux you can register executable formats through binfmt_misc). If the executable file needs an interpreter then the kernel needs to know which interpreter to call. That's what the shebang line is for.

If your script is in fish syntax, its first line must be

#!/usr/bin/env fish

(You can use the absolute path instead, but then you'll have to modify the script if you want to run it on a machine where the fish executable is in a different location, e.g. /usr/bin/fish vs /usr/local/bin/fish.)

If your script is in sh syntax, use

#!/bin/sh

(All modern Unix systems have a POSIX sh at /bin/sh so you don't need env.)

If your script is in bash syntax (which is sh plus some bash-specific extensions), use

#!/usr/bin/env bash

On Linux, in practice, #!/bin/bash will also work.

All of this is independent of which shell you're calling the script from. All that matters is what language the script is written in.

Best Answer

Related Solutions

Shell – how to reference a variable in fish shell with a default fallback

Fish Shell – Fix Exec Format Error

Related Question