show the process memory size instead of the tty - plstree - ps and ls displayed as a tree
 (HTM) git clone git://bitreich.org/plstree git://enlrupgkhuxnvlhsf6lc3fziv5h2hhfrinws65d7roiv6bfj7d652fid.onion/plstree
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       ---
 (DIR) commit fee3d0d90ef36e4d28fbb36251f06dd4e7be492d
 (DIR) parent e3d30e6a69c7376cacf94f5cadc26d9a5655b5b3
 (HTM) Author: Josuah Demangeon <mail@josuah.net>
       Date:   Sat,  9 Jun 2018 22:50:08 +0200
       
       show the process memory size instead of the tty
       
       The associated tty is specific for terminal interaciton so have been
       removed.
       
       Instead, the process memory size is added: this helps to have an
       estimation of a whole process tree: if software are forking or start
       other programs, it helps to have the memory footprint of _all_ of them
       instead of just one.
       
       Diffstat:
         M ptree                               |       2 +-
       
       1 file changed, 1 insertion(+), 1 deletion(-)
       ---
 (DIR) diff --git a/ptree b/ptree
       @@ -47,7 +47,7 @@ BEGIN {
        
        function list(entries)
        {
       -        opt = "-o ppid,user,tty,pid,stat,comm,args"
       +        opt = "-o ppid,user,vsz,pid,stat,comm,args"
                cmd = "exec ps -ax " opt " 2>/dev/null";
                if (!(cmd | getline)) {
                        cmd = "exec ps " opt