Not so much of a "file" but a story of finding out how to fix when you download something from the 'net and it won't run because of protextions in the system. Specifically I'm talking about macOS Catalina.
I download a file via Safari and I try to run it and I get some sorta error. solution was to:
xattr -d com.apple.quarantine ~/Downloads/some-binary
OK, so lets try use a cli tool like go-getter to download (and unzip) the file.
Killed: 9
Huh!? there is no quarantine attribute on it. and this was working for aaaaages.
codesign -dv /usr/local/bin/some-binary
All good. download another copy and check codesign... Runs fine!
diff ~/Downloads/some-binary /usr/local/bin/some-binary
Identical!
rm /usr/local/bin/some-binary
mv ~/Downloads/some-binary /usr/local/bin/some-binary
Works now!! Ummm... but how?
I ran my update script that grabs newer versions if available for a bunch of tools and:
Killed: 9
@#$#%%^^ What happend this time. Hmm, what happens if I delete the file then donwload the update.
Version number V1.Blah
OK. so its something to do with the file being replaced inplace.