You can't use sed -i on /etc/sysctl.d/*.conf

[neutronscott]

content/linux_os/guide/system/permissions/restrictions/sysctl_kernel_core_pattern_empty_string/bash/shared.sh

Line 15 in 59013f6

sed -i "s/^${escaped_entry}$/# &/g" $f

This clobbers the symlink and ruins everything!

[neutronscott]

The whole thing is a mess. You use grep to find a pattern, then see if it was found, and then a while read loop to read it back in, just to have sed add a hash mark. sed can search for things too. the whole thing probably equivalent to sed 's/^\s*kernel\.core_pattern.*/# &/' "$f" but add a --follow-symlinks in there I guess.