In article <199604171251.OAA17329@wipux2.wifo.uni-mannheim.de> andrew@wipux2.wifo.uni-mannheim.de (Andrew Wheadon) writes:
>
>
>bugs:*:101:100:Bug Filer:/home/hiwis/bugs:/bin/go
>x11:*:102:100:Mr. X:/home/hiwis/x11:/bin/go
>lp:*:110:32766:Max Hit Lp:/var/spool/laser1:/bin/go
>tftp:*:113:32766:Trivial Ftp:/:/dev/null
>ftp:*:200:32766:Anonymous Ftp,,,:/mit/ftp:/dev/null
>anon:*:200:32766:Anonymous Sup,,,:/mit/ftp/pub/NetBSD:/dev/null
>httpd:*:202:40:Humpty Dumpty:/usr/local/etc/httpd:/dev/null
>
><root@wipux2:~> grep -v [a-z] /etc/passwd
>tftp:*:113:32766:Trivial Ftp:/:/dev/null
><root@wipux2:~>
>
>Why is grep outputting the 'tftp' line ?
>Cheerio

[a-z] gets expanded by the shell to a file in the current working directory
with a single lower case letter filename. 

christos