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Full Discussion: pipe to ls with filenames with spaces breaks!
Top Forums Shell Programming and Scripting pipe to ls with filenames with spaces breaks! Post 302218805 by phorgan1 on Sunday 27th of July 2008 12:32:56 AM
Old 07-27-2008
Follow up to the $@ vs $* conundrum
Quote:
Originally Posted by phorgan1
This is cool! I'm sure I have something to learn here, because I had thought that outside of double quotes, $@ and $* were identical. Quoting from the Bash Reference Manual:

So, please, I've always wondered about this--why should I prefer to use one over the other, and in what circumstances--Does it matter outside of double quotes, and what the heck do the descriptions of the behavior within double quotes mean?

Patrick
So following up, this script:
Code:
#!/bin/bash
export IFS="
"
echo "$@"
echo "$*"
for arg in $@ ; do
    echo $arg
done
for arg in $* ; do
    echo $arg
done
for arg in "$@" ; do
    echo $arg
done
for arg in "$*" ; do
    echo $arg
done

has this output:
Code:
./shtest a b c
a b c
a
b
c
a
b
c
a
b
c
a
b
c
a b c

So, seems the same outside quotes, but what the heck is going on inside the quotes? When would I want the join them all together behavior and when would I want the individual words behavior?

Patrick
 

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LEARN ABOUT DEBIAN

ns_getsockaddr

Ns_Sock(3aolserver)					   AOLserver Library Procedures 				       Ns_Sock(3aolserver)

__________________________________________________________________________________________________________________________________________________

NAME

       Ns_BindSock,  Ns_GetSockAddr,  Ns_SockAccept,  Ns_SockAsyncConnect,  Ns_SockAsyncConnect2,  Ns_SockBind, Ns_SockCloseLater, Ns_SockConnect,
       Ns_SockConnect2, Ns_SockListen, Ns_SockListenEx, Ns_SockPipe, Ns_SockSetBlocking, Ns_SockSetNonBlocking, Ns_SockStrError,  Ns_SockTimedCon-
       nect, Ns_SockTimedConnect2, ns_pipe, ns_sockpair - library procedures

SYNOPSIS

       #include "ns.h"

       Ns_BindSock(arg, arg)

       Ns_GetSockAddr(arg, arg)

       Ns_SockAccept(arg, arg)

       Ns_SockAsyncConnect(arg, arg)

       Ns_SockAsyncConnect2(arg, arg)

       Ns_SockBind(arg, arg)

       Ns_SockCloseLater(arg, arg)

       Ns_SockConnect(arg, arg)

       Ns_SockConnect2(arg, arg)

       Ns_SockListen(arg, arg)

       Ns_SockListenEx(arg, arg)

       Ns_SockPipe(arg, arg)

       Ns_SockSetBlocking(arg, arg)

       Ns_SockSetNonBlocking(arg, arg)

       Ns_SockStrError(arg, arg)

       Ns_SockTimedConnect(arg, arg)

       Ns_SockTimedConnect2(arg, arg)

       ns_pipe(arg, arg)

       ns_sockpair(arg, arg)
_________________________________________________________________

DESCRIPTION

       These functions ...

SEE ALSO

       nsd(1), info(n)

KEYWORDS

AOLserver								4.0						       Ns_Sock(3aolserver)
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