On 11/1/2021 2:26 PM, Pablo Rodriguez via ntg-context wrote:
Dear list,
is there a way if a program is installed on the computer using Lua.
I have the following sample:
\starttext
\startluacode
filename = tex.jobname .. ".pdf"
os.exec("dir " .. filename)
\stopluacode
\stoptext
Is there a way to wrap os.exec() in the sample so that it only runs if
"dir" is available?
I know that os.name would be an option here, but not in my real world
document.
\starttext
\startluacode
if lfs.isfile(tex.jobname .. ".pdf") then
context("YES")
end
if lfs.isfile(file.addsuffix(environment.outputfilename,"pdf")) then
context("YES")
end
if #dir.glob(file.addsuffix(environment.outputfilename,"pdf")) > 0 then
context("YES")
end
\stopluacode
\stoptext
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