Re: [PATCH] selftests/cpufreq: Fix cpufreq basic read and update testcases

On 22-05-25, 14:07, Sapkal, Swapnil wrote:

Initially I tried the same, but it does not work properly with the root user.

Hmm,

Tried chatgpt now and it says this should work:

if ! cat "$1/$file" 2>/dev/null; then printf "$file is not readable\n" fi

- This attempts to read the file. - If it fails, the cat command returns non-zero, and you print a message. - 2>/dev/null suppresses error messages (Permission denied, etc.) - This works reliably for both root and non-root users, because it actually tests the read action, not just permission bits.