I'm using find to find the file cpuinfo_max_freq in the the directory /sys/devices/
This is the command I used, it's not showing me any output:
find /sys/devices/ -name 'cpuinfo_max_freq' I also tried adding the -L flag to search inside linked directories too, but it doesn't seem to work, And keeps outputting endlessly and never finishes. But doing a find in the root directory (/) works fine.
Here's the path to the actual file:
/sys/devices/system/cpu/cpu1/cpufreq/cpuinfo_max_freq The /sys/devices/system/cpu/cpu1/cpufreq/cpuinfo_max_freq path contains symlink components:
$ namei -l /sys/devices/system/cpu/cpu1/cpufreq/cpuinfo_max_freq f: /sys/devices/system/cpu/cpu1/cpufreq/cpuinfo_max_freq drwxr-xr-x root root / dr-xr-xr-x root root sys drwxr-xr-x root root devices drwxr-xr-x root root system drwxr-xr-x root root cpu drwxr-xr-x root root cpu1 lrwxrwxrwx root root cpufreq -> ../cpufreq/policy1 drwxr-xr-x root root .. drwxr-xr-x root root cpufreq drwxr-xr-x root root policy1 -r--r--r-- root root cpuinfo_max_freq
The canonical path of the corresponding file is:
$ readlink -f /sys/devices/system/cpu/cpu1/cpufreq/cpuinfo_max_freq /sys/devices/system/cpu/cpufreq/policy1/cpuinfo_max_freq And that path is among the ones returned by:
$ find /sys/devices/ -name 'cpuinfo_max_freq' /sys/devices/system/cpu/cpufreq/policy6/cpuinfo_max_freq /sys/devices/system/cpu/cpufreq/policy4/cpuinfo_max_freq /sys/devices/system/cpu/cpufreq/policy2/cpuinfo_max_freq /sys/devices/system/cpu/cpufreq/policy0/cpuinfo_max_freq /sys/devices/system/cpu/cpufreq/policy7/cpuinfo_max_freq /sys/devices/system/cpu/cpufreq/policy5/cpuinfo_max_freq /sys/devices/system/cpu/cpufreq/policy3/cpuinfo_max_freq /sys/devices/system/cpu/cpufreq/policy1/cpuinfo_max_freq
Unless you pass the -L option or -follow predicate, find doesn't follow symlinks when descending the directory trees rooted at the paths you give it as argument.
find -L would evantually find it (along with /sys/devices/system/node/node0/cpu1/cpufreq/cpuinfo_max_freq, /sys/devices/system/memory/memory8/node0/cpu1/cpufreq/cpuinfo_max_freq, /sys/devices/system/node/node0/subsystem/devices/node0/subsystem/devices/node0/cpu1/cpufreq/cpuinfo_max_freq..., and an infinity of other paths) but find with -L would also get lost in /sys/devices as /sys contains many many symlinks, some of which causing loops.
I think you need to specify you're looking for a "regular file" (-type f):
$ find /sys/devices -name 'cpuinfo_max_freq' -type f /sys/devices/system/cpu/cpufreq/policy0/cpuinfo_max_freq This works fine on my Debian/RPi OS system
If you're trying it in macOS, forget it... find is a different animal in macOS
-type f doesn’t help find find anything; it filters what it does find. Put another way, a given find invocation won’t find anything more if you add more tests to it.
find /sys/devices/ -name 'cpuinfo_max_freq' 2>/dev/null? What operating system are you using?