Mailinglist Archive: opensuse (2496 mails)

[Anders Johansson <ajohansson@xxxxxxx>]

On Monday 01 December 2008 19:12:24 David C. Rankin wrote:
>       I finally resolved to the function idea Aaron first suggested.

Who is Aaron?

> wpsearch ()
> {
> if [[ $1 ]]; then
>     webpin $1
> else
>     echo -e "\n\tusage: wp <filename>\n"
> fi
> }
>
> alias wp='wpsearch $1'

This is pointless. "wp konqueror" expands to

wpsearch $1 konqueror

and the only reason your alias works is that this is a valid string, since $1 
is the empty string after expansion. But try starting this from a script where 
you pass parameters. Then $1 won't be empty, and then you will get weird 
results

>       I guess I've been lucky using $1 with aliases. I don't know how they 
> work,
> but they work in most instances for me:
>
> alias hist='history | grep $1' #Requires one input
> alias tmsg='sudo tail $1 -n50 /var/log/messages' # -f to follow
> alias tmi='sudo tail $1 -n50 /var/log/mail.info' # -f to follow
> alias umnt='/home/david/bin/alias_umnt $1'
> alias wg='[[ -n $1 ]] || echo -e "\n\tUsage:  wg <filename>\t\t(runs wget
> --no-check-certificate --progress=bar)\n"; wget --no-check-certificate
> --progress=bar $1' #requires input
> alias zu='/home/david/linux/scripts/config/zypp/zypp_auto $1' # either up
> for patches or -t packages for pagkages
> alias znr='sudo zypper nr $1 $2' # requires two inputs <old repo alias>
> <new repo alias>

Same thing for all of these. "hist konqueror" expands to

history | grep $1 konqueror

which works because $1 is the empty string. tmsg -f expands to

sudo tail $1 -n 50 /var/log/messages -f

which again is a valid command line

And so on and so on and so forth

Anders
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