Check if an executable exists

Asked Jan 25 '22 at 14:10

Active Jan 25 '22 at 19:12

Viewed 24 times

I want to change this VimScript to lua, but I don't know how to check if an executable exists.

if executable('curl')

In this case I can just use the executable function defined by vim. But I want to know how would I do it without using vim's function.

local fn = vim.fn

local function executable(ex)
    return fn.executable(ex) == 1
end

I can search recursively for a file with that name in the path and if it exists and is executable I return true, else I return false.

Is there an easier way to make a function that checks if the executable exists and returns a boolean?

edited Jan 25 '22 at 19:12

romainl

asked Jan 25 '22 at 14:10

Maybe something like this (If executable ~= nil then) if it returns something then that will return true. – Dragon20C Jan 25 '22 at 14:22
You can also check if the file exists if it's on your system with a path to it using io.open – Dragon20C Jan 25 '22 at 14:33
`if executable and executable('curl') then ...` – Mike V. Jan 25 '22 at 14:35
`print(io.open(path, "r") and true or false)` – Piglet Jan 25 '22 at 18:13

0 Answers0