Обсуждение: Patch (tiny): \cd (change dir) for psql.
Here's a patch for a \cd (change dir) command in psql program. It's very small and only adds a few lines. Personally, I am surprised psql does not have this command. It is EXTREMELY useful when \include'ing SQL scripts to set up a database schema. Hope you like, Mark Hamby P.S. I am not on the 'psql-patches' list, so responses should be sent directly to me for more info or questions.
Вложения
On Mon, 26 Mar 2001 15:07:37 +0000 (UTC), Mark Hamby <mark@archer.leavenworth.army.mil> wrote: > > >Here's a patch for a \cd (change dir) command in psql program. >It's very small and only adds a few lines. >Personally, I am surprised psql does not have this command. >It is EXTREMELY useful when \include'ing SQL scripts to set >up a database schema. > It's a good idea. This is an itch I've needed scratched many times.
> On Mon, 26 Mar 2001 15:07:37 +0000 (UTC), Mark Hamby > <mark@archer.leavenworth.army.mil> wrote: > > > > > >Here's a patch for a \cd (change dir) command in psql program. > >It's very small and only adds a few lines. > >Personally, I am surprised psql does not have this command. > >It is EXTREMELY useful when \include'ing SQL scripts to set > >up a database schema. > > > > It's a good idea. This is an itch I've needed scratched many times. > Will be in 7.2. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 853-3000 + If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania 19026
On Tue, Mar 27, 2001 at 09:52:05AM -0500, Bruce Momjian wrote:
> > On Mon, 26 Mar 2001 15:07:37 +0000 (UTC), Mark Hamby
> > <mark@archer.leavenworth.army.mil> wrote:
> > >
> > >
> > >Here's a patch for a \cd (change dir) command in psql program.
> > >It's very small and only adds a few lines.
> > >Personally, I am surprised psql does not have this command.
> > >It is EXTREMELY useful when \include'ing SQL scripts to set
> > >up a database schema.
> > >
> >
> > It's a good idea. This is an itch I've needed scratched many times.
> >
>
> Will be in 7.2.
and with it i'd imagine we'll also need
# return to previous directory, for the lazy
\cd -
# show current working directory
\cwd
\pwd
of course, we could continue working the way we are now:
somePsqlDb=> \q
% cd /some/where/over/the/rainbow
% psql mydata
mydata=>
but why? :)
--
It is always hazardous to ask "Why?" in science, but it is often
interesting to do so just the same.
-- Isaac Asimov, 'The Genetic Code'
will@serensoft.com
http://newbieDoc.sourceforge.net/ -- we need your brain!
http://www.dontUthink.com/ -- your brain needs us!
will trillich writes: > and with it i'd imagine we'll also need > > # return to previous directory, for the lazy > \cd - > # show current working directory > \cwd > \pwd You can do this with \!pwd (Of course \!cd won't do what you want. This situation is similar to an ftp client.) -- Peter Eisentraut peter_e@gmx.net http://yi.org/peter-e/
> You can do this with > > \!pwd > > (Of course \!cd won't do what you want. This situation is > similar to an > ftp client.) > > -- > Peter Eisentraut peter_e@gmx.net http://yi.org/peter-e/ > Why is not possible to run every bash command? Something like '\ccd ..' for 'cd ..' or '\cpwd' for 'pwd' etc. It's pretty simple. Jan Pruner jan@pruner.cz
On Thu, Mar 29, 2001 at 07:59:01AM +0200, Pruner Jan wrote: > > You can do this with > > > > \!pwd > > > > (Of course \!cd won't do what you want. This situation is > > similar to an > > ftp client.) > > > > -- > > Peter Eisentraut peter_e@gmx.net http://yi.org/peter-e/ > > Why is not possible to run every bash command? > Something like '\ccd ..' for 'cd ..' or '\cpwd' for 'pwd' etc. well, the bang-notation is already there: \!ls \!grep \!find \!who \!last \!pwd > It's pretty simple. but it won't work for "cd" ... i know this one! when a process forks (shield your eyes, everyone, give it some privacy...) the 'child' inherits the same environment as the 'parent'. but after the fork, each is its own individual process with its own environment. changing the directory of the parent won't affect that of the child -- and VICE VERSA as well: namely, spawning a child shell process, and then changing its default working directory, will not matter one iota to the parent psql process. but you can fork off a quickie 'pwd' which will tell you what its current directory is -- and given that there's no opportunity to have it change its directory from the one it inherited from its parent process, it'll match the 'pwd' of the parent 'psql' process as well. -- It is always hazardous to ask "Why?" in science, but it is often interesting to do so just the same. -- Isaac Asimov, 'The Genetic Code' will@serensoft.com http://newbieDoc.sourceforge.net/ -- we need your brain! http://www.dontUthink.com/ -- your brain needs us!