[2013-04-03 16:25] Sam Watkins
>
> using awk this seems to work:
>
> awk '{ gsub(A, B); print; }' A="$A" B="$B"
>
> Still a bit long, but much better than I can manage in sed or perl. Not sure
> if that is standard awk or not, there's also a -v option to set values.
Your version is the orig
> What is the shortest shell command you can write, that replaces $A with $B in
> a text stream for any A and B?
On Tue, Apr 02, 2013 at 06:32:19PM -0700, Noah Birnel wrote:
> A1="$(printf '%s' "$A" | sed 's,",\\",g; s,\\,,g')"
> B1="$(printf '%s' "$B" | sed 's,",\\",g; s,\\,,g')"
> awk '
On Tue, Apr 02, 2013 at 04:29:59PM +1100, Sam Watkins wrote:
>
> What is the shortest shell command you can write,
> that replaces $A with $B in a text stream for any A and B?
>
A1="$(printf '%s' "$A" | sed 's,",\\",g; s,\\,,g')"
B1="$(printf '%s' "$B" | sed 's,",\\",g; s,\\,,g')"
awk '{
>
> Please don't write this tool as it is already available: ed(1):
>
> echo '1,$-6p' | ed - "$1"
> echo '10,$--p' | ed - "$1"
better:
ed -s $1 <<"EOF"
1,$-6p
EOF
;)
Do note that gres(1) lives on as replace(1). Replace is maintained by
the MySQL team.
On Tue, Apr 02, 2013 at 01:29:11PM +0200, markus schnalke wrote:
> [2013-04-02 15:23] Sam Watkins
> >
> > I suggest to extend your program so it can also print a range of lines
> > (and thus subsume the functions of 'head' and 'tail' while doing more
> > and yet staying fairly focused). You coul
Sam Watkins was just testing him, now you spoiled it, lol.
On 4/2/13, markus schnalke wrote:
> [2013-04-02 15:23] Sam Watkins
>>
>> I suggest to extend your program so it can also print a range of lines
>> (and thus subsume the functions of 'head' and 'tail' while doing more
>> and yet staying f
[2013-04-02 15:23] Sam Watkins
>
> I suggest to extend your program so it can also print a range of lines
> (and thus subsume the functions of 'head' and 'tail' while doing more
> and yet staying fairly focused). You could perhaps use negative numbers
> to count back from the final line. It sho
[2013-04-02 15:36] Sam Watkins
> I reckon by far the most common thing people do with sed is to replace
> one (sort of) string with another. But even this "core sed business"
> is ridiculous with sed.
>
> e.g. A=/usr/bin B=/bin sed 's/$A/$B/' out # won't work
>
> Changing delimiters doesn't
