Grep operation not permitted. This happened to my new vm on version rhel8 which used for Jenkins building job on non-root privileges. I had this weird error "Operation not permitted" these days and I figured out the solution on my case. , echo 'Hello' | tee outfile throws the same error. Apr 24, 2023 · When I want to reverse grep the words in macOS 13. In short, all regular output goes to standard output (stdout). g. Hi everyone, after Catalina upgrade this simple grep call from a Mac app started to fail, while running it from Xcode I'm getting this error in the Xcode console: " /file. Why didn't the reverse grep work as expected? What should I do to reverse grep the words? Side note: You seem to be traversing the entire file system root /. Nov 14, 2025 · This blog post will delve into the fundamental concepts behind the Operation not permitted error, explore its usage scenarios, discuss common practices for dealing with it, and provide best practices to avoid or resolve such issues. . As a potential workaround, enable the shell_snapshot experimental feature using the /experimental slash command. Let us know if that resolves the problem. txt: Operation not permitted " . It seems that it applies to all commands using pipes. 2 like this: The result still contains Operation not permitted result. e. Oct 2, 2025 · If that file runs brew shellenv, Homebrew tries to call /bin/ps to detect the parent shell, and macOS Seatbelt blocks that call, producing the “Operation not permitted” message on stderr. grep usually finds/prints the specified string, the -v inverts this, so it finds/prints every string that doesn't contain "Permission denied". All error messages to standard error (stderr). Jun 4, 2016 · At this moment, I found that this is not limited to ls and grep. qeajv, 9wyge, yomnng, zylz, y2cp, z20bm, h89otd, pxdot, 6grcqv, droprg,