Re: [9fans] mishandling empty lists - let's fix it

[matt <maht-9fans@maht0x0r.net>]

You can build this whole dream using plan9 and show the world, you don't
have to rewrite any of the utilities, just shape the calling convention
to your liking.
I bet you could even find the pattern and wrap the whole lot in a meta
script, maybe even utilise an FS


fn mkdir {
    if(! ~ $#* 0)
       /bin/mkdir $*
ifs = '
'
    m = `{read}
     while(! ~ $#m 0) {
          ifs = ' '
          p = `{echo -n $m}
         /bin/mkdir $p
          ifs='
'
          m = `{read}
    }
}

with no newlines in directory names

>*On Mon, Oct 5, 2009 at 2:04 PM, John Stalker <stalker@maths.tcd.ie> wrote:
>
>
>
>>`cat' would concatenate 0 files, i.e. ouptut nothing,
>>
>>
>
>cat would copy stdin to stdout
>
>
>
>>`chmod 755' would set the permissions of no files to 755,
>>
>>
>
>would read a list of files from stdin and change the modes
>
>
>
>>`cp foo/' would move no files to the directory foo,
>>
>>
>would read a list of files from stdin and copy them.
>
>
>
>>`df' would show free disk space for no filesystems,
>>
>>
>would read a list of file system names and df them.
>
>
>
>>`kill' would stop no processes,
>>
>>
>would read a list of pids in and stop them.
>
>
>
>>`ln foo/' would hardlink no files into the directory foo,
>>
>>
>would read a list of filenames in and ln them
>
>
>
>>`ls' would list no files (you would use `ls .' for the usual case),
>>
>>
>would read a list of file names in and ls them.
>
>
>
>>`mkdir' would create no directories,
>>
>>
>would read a list of file names in and mkdir them (I could really use this one)
>
>
>
>>`mv foo/' would move no files into the directory foo,
>>
>>
>would read a list of file names in and mv them
>
>
>
>>`ps -U' would show no users' processes,
>>
>>
>would read a list of user names in and ps them
>
>
>
>>`rm' would remove no files,
>>
>>
>would read a list of file names in and rm them
>
>
>
>>and `sh' would execute no scripts in the Bourne shell.
>>
>>
>
>would read a set of commands from stdin and ... oh wait it does this.
>
>I prefer my version to your versions. I can see uses for them already.
>
>ron
>
>
>