Convert symlinks from absolute to relative

sudo apt install symlinks

Usage

symlinks -cr /path/to/folder
$ symlinks -h
symlinks: scan/change symbolic links - v1.3 - by Mark Lord

Usage:  symlinks [-cdorstv] dirlist

Flags:  -c == change absolute/messy links to relative
        -d == delete dangling links
        -o == warn about links across file systems
        -r == recurse into subdirs
        -s == shorten lengthy links (displayed in output only when -c not specified)
        -t == show what would be done by -c
        -v == verbose (show all symlinks)