Oops, if you’ll excuse me, there are some kids using superscalar multiprocessor RISC unix machines (iPhones) on my lawn that I need to go yell at. I generally use -r because symlinks are often semantically “This doesn’t quite belong here” for me. R vs -r: I’m not sure if you actually care about the difference between -R and -r my guess is that you probably don’t: -R derefs symlinks while -r ignores them. M-x rgrep explicitly prompts for a filename pattern to use when running, *and* gives you a nice result buffer that you can click/Enter on to go directly to the result in another emacs frame. Or, if you’re using org files, you’re probably in emacs. Related postsįWIW, GNU grep has a way to do this that doesn’t choke on filenames containing spaces, and also avoids the overhead of starting a new process for each file (this was more of a thing twenty-mumble years ago when I was a baby sysadmin, but it’s still relevant if you have a very large number of matching filenames). org and search them for ‘cheese.'” It’s good to understand how both approaches work. org” whereas the version with find reads like “Find files whose names end in. From left to right, it essentially says “Search for ‘cheese’ in files ending in. Now the code reads more like an ordinary call to grep. I was discussing this with Chris Toomey and he suggested an alternative using a subshell that seems more natural: grep -l cheese $(find. One way to solve this is with find and xargs: It seems that grep -R can either search all files of the form *.org in the current directory, ignoring the -R switch, or search all files recursively if you don’t give it a file glob, but it can’t do both. The comments about speed, elegance, and robustness have to do with OLD SYSTEMS THAT DONT HAVE GNU. You have four files, two in the working directory and two below, that all contain the same string: “I like cheese.” Just add -r and grep will search through subdirectories. org files in your current directory and below that contain the text “cheese.” The regular expression search utility grep has a recursive switch -R, but it may not work like you’d expect.
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