[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Better way to make sure external command exists in the system?
From: |
Jean Louis |
Subject: |
Better way to make sure external command exists in the system? |
Date: |
Thu, 18 Mar 2021 15:13:02 +0300 |
I have changed the OS on one computer and noticed that my Emacs Lisp
programs use external commands like: mailutils, mail, pandoc,
markdown, and others. Sometimes I was hard coding the path names like
/usr/local/bin and now some commands changed to /usr/bin
And some functions should not even run if external command does not
exist. I would even like to stop loading the .el program if necessary
external programs do not exist in the system.
For that reason I would do some changes:
- instead of hard coding the program name within quotes, I will use
variable. Instead of (shell-command "mogrify ...") I will rather use
something like (shell-command (format "%s ..." mogrify-command))
- variables for commands I would place at beginning of programs
- before variables get defined, I would use `executable-find' but I
would like for the program loading to fail if those external
programs cannot be found.
Is it then recommended to use something like:
(defun check-my-executables ()
...)
(check-my-executables)
during the loading time?
Jean
- Better way to make sure external command exists in the system?,
Jean Louis <=
- Re: Better way to make sure external command exists in the system?, Daniel MartÃn, 2021/03/19
- Re: Better way to make sure external command exists in the system?, Jean Louis, 2021/03/21
- Re: Better way to make sure external command exists in the system?, Emanuel Berg, 2021/03/21
- Re: Better way to make sure external command exists in the system?, Jean Louis, 2021/03/23
- Re: Better way to make sure external command exists in the system?, Emanuel Berg, 2021/03/23
- Re: Better way to make sure external command exists in the system?, Jean Louis, 2021/03/23
- Re: Better way to make sure external command exists in the system?, Emanuel Berg, 2021/03/25