Re: Bash commands

[Freddy Freeloader <fredddy@cableone.net>]

I have created no aliases on my system at all.  There is, however,  an 
alias for "dn", but that seems to be a system created alias.  The output 
from dn lists 25 directories that are found in my /home directory.  
Number 23 on that list is, interestingly enough, one of the directories 
that  was listed in the output from 'echo "b = $b"' . 

Now the question is for me why does bash pick up on the dn alias? 

Here is the alias.

ffreeloader@Job:~$ alias
alias dn='OPTIONS=$(ls -F |grep /$) ; select s in $OPTIONS; do cd 
$PWD/$s ; break ; done '


Mike McCarty wrote:

> Freddy Freeloader wrote:
>
> > Bill,
> >
> > No I have not aliased the echo command.
> > Bill Marcum wrote:
> >
> > > On Thu, Oct 13, 2005 at 08:18:05AM -0700, Freddy Freeloader wrote:
> > >  
> > >
> > > > Hi all,
> > > >
> > > > I downloaded the Advanced Bash Scripting Guide the other day an 
> > > > have started to work my way through it.  I'm fairly new to bash so 
> > > > I get more than a little confused when the output I get is nothing 
> > > > similar to what the ABS Guide says it should be.
> > > > Here is what has me confused at the moment.
> > > >
> > > > b=${a/23/BB}
> > > >
> > > > echo "b = $b"
> > > >
> > > > Now the ABS guide says that where I'm setting b it should be 
> > > > substituting BB for 23.  It also says that the output of 'echo "b - 
> > > > $b"' should be: b = BB35
> > > >
> > > > However, what I get as output is as follows:
> > > >
> > > > ffreeloader@Job:~$ echo "b = $b"
> > > > b = total 520716
> > > > drwxr-sr-x  2 ffreeloader ftp        48 2005-10-13 07:50 script
> > > > -rw-r--r--  1 ffreeloader ftp 532692172 2005-10-12 09:38 
> > > > server_2003.zip
> > > >
> > > >   
> > >
> > >
> > > You haven't aliased the echo command, have you?  Try these commands:
> > > type echo
> > > declare -a
> > > declare -f
> > >
> > >
> > >  
> Hmm. Here's what I get (blank lines added for clarity)
>
> [jmccarty@Presario-1 jmccarty]$ grep jmccarty /etc/passwd
> jmccarty:x:500:500:Mike McCarty:/home/jmccarty:/bin/bash
>
> [jmccarty@Presario-1 jmccarty]$ /bin/bash --version
> GNU bash, version 2.05b.0(1)-release (i386-redhat-linux-gnu)
> Copyright (C) 2002 Free Software Foundation, Inc.
>
> [jmccarty@Presario-1 jmccarty]$ alias
> alias l.='ls -d .* --color=tty'
> alias ll='ls -l --color=tty'
> alias ls='ls --color=tty'
> alias which='alias | /usr/bin/which --tty-only --read-alias --show-dot 
> --show-tilde'
>
> [jmccarty@Presario-1 jmccarty]$ \ls -l fred
> -rwx------  1 jmccarty jmccarty 27 Oct 14 07:43 fred
>
> [jmccarty@Presario-1 jmccarty]$ cat fred
> b=${a/23/BB}
> echo "b = $b"
>
> [jmccarty@Presario-1 jmccarty]$ ./fred
> b =
> [jmccarty@Presario-1 jmccarty]$ . fred
> b =
> [jmccarty@Presario-1 jmccarty]$
>
> Mike
> --
> p="p=%c%s%c;main(){printf(p,34,p,34);}";main(){printf(p,34,p,34);}
> This message made from 100% recycled bits.
> You have found the bank of Larn.
> I can explain it for you, but I can't understand it for you.
> I speak only for myself, and I am unanimous in that!