Subject: Re: funny grep
To: None <current-users@NetBSD.ORG>
From: Christos Zoulas <>
List: current-users
Date: 04/18/1996 10:36:42
In article <> (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
>Why is grep outputting the 'tftp' line ?

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