Set up alias for finding files to persist.

home/packages.nix

@@ -6,6 +6,7 @@
       git
       home-manager
       mosh
+      ripgrep
       tmux
       zsh
     ]

home/programs.nix

@@ -4,7 +4,8 @@
     enable = true;
 
     shellAbbrs = {
-      fixssh = "eval $(tmux show-env | grep ^SSH_AUTH_SOCK | sed 's/=/ /;s/^/set /')";
+      fix-ssh = "eval $(tmux show-env | grep ^SSH_AUTH_SOCK | sed 's/=/ /;s/^/set /')";
+      diff-persist = "sudo rsync -amvxx --dry-run --no-links --exclude '/tmp/*' --exclude '/root/*' / /persist/ | rg -v '^skipping|/$'";
     };
 
     shellInit = ''