/usr/ is in node-cross-spawn 5.1.0-1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/nodejs/
/usr/lib/nodejs/cross-spawn/
/usr/lib/nodejs/cross-spawn/index.js
/usr/lib/nodejs/cross-spawn/lib/
/usr/lib/nodejs/cross-spawn/lib/enoent.js
/usr/lib/nodejs/cross-spawn/lib/parse.js
/usr/lib/nodejs/cross-spawn/lib/util/
/usr/lib/nodejs/cross-spawn/lib/util/escapeArgument.js
/usr/lib/nodejs/cross-spawn/lib/util/escapeCommand.js
/usr/lib/nodejs/cross-spawn/lib/util/hasEmptyArgumentBug.js
/usr/lib/nodejs/cross-spawn/lib/util/readShebang.js
/usr/lib/nodejs/cross-spawn/lib/util/resolveCommand.js
/usr/lib/nodejs/cross-spawn/package.json
/usr/share/
/usr/share/doc/
/usr/share/doc/node-cross-spawn/
/usr/share/doc/node-cross-spawn/README.md
/usr/share/doc/node-cross-spawn/changelog.Debian.gz
/usr/share/doc/node-cross-spawn/copyright