[colug-432] show path stuff

[jep200404 at columbus.rr.com]

Hi Jenny,

On Fri, 30 Oct 2015 11:36:06 -0500, Rick Hornsby <richardjhornsby at gmail.com> wrote:

> Poking around on the interwebs, 
> found a command I didn't know existed - 
> namei - which seems to do exactly what you want:
> 
> $ namei -mo /etc/udev/rules.d/70-persistent-net.rules
> f: /etc/udev/rules.d/70-persistent-net.rules
>  drwxr-xr-x root root /
>  drwxr-xr-x root root etc
>  drwxr-xr-x root root udev
>  drwxr-xr-x root root rules.d
>  -rw-r--r-- root root 70-persistent-net.rules

If namei exists on AIX, use it.
If namei does not exists on AIX,
then use my clutzy script.

On Fri, 30 Oct 2015 13:09:01 -0400, jep200404 at columbus.rr.com wrote:

>     [srb at colug ~]$ cat bin/lr
>     #!/bin/sh
>     
>     for f in "$@"; do
>         while [ "x$f" != "x" ]; do
>             ls -ld "$f"
>             f=`echo "$f" | sed -e 's%/[^/]*$%%'`
>         done
>     done | column -t | sed -e 's/\([^ ]\) /\1/g'
>     [srb at colug ~]$ 

A modest improvement on that is to use dirname as follows.

    [srb at colug ~]$ cat ~/bin/lr
    #!/bin/sh
    
    for f in "$@"; do
        # echo "0 f is '${f}"
        while true; do
            # echo "1 f is '${f}"
            ls -ld "$f"
            if [ "x$f" == "x/" ]; then
                break
            fi
            f=`dirname "$f"`
        done
    done | column -t | sed -e 's/\([^ ]\) /\1/g'
    [srb at colug ~]$ 

There might be other stuff that does not work on AIX, 
or works differently.

Jim