[lug] CDPATH?
Jeffrey S. Haemer
jeffrey.haemer at gmail.com
Thu Apr 14 16:08:46 MDT 2016
Chris,
The "or matches pattern" part feels like a bag off the side to me, but the
"up <n>" seems useful.
up() {
local _up
for i in $(eval echo {1..$1}); do _up+=../; done
cd $_up
}
This seems to work in both zsh and bash, but not in busybox sh
On Thu, Apr 14, 2016 at 12:44 PM, Chris Riddoch <riddochc at gmail.com> wrote:
> Here's a clever thing I found recently, for the zsh users. Credit
> goes to http://chneukirchen.org/dotfiles/.zshrc
> (There's a lot of useful things there besides this.)
>
> Here's how to use it. Let's say you've been navigating the directory
> hierarchy of the source code for some java project, and you've reached
> the point where typing '../' even one more time will make you want to
> defenestrate something. This 'up' function can help. Like so:
>
> tmp $ mkdir -p a/b/c/d/e/f/g
> ~/tmp
> tmp $ cd a/b/c/d/e/f/g
> ~/tmp/a/b/c/d/e/f/g
> g $ up 4
> ~/tmp/a/b/c
> c $ up a
> ~/tmp/a
> a $ up 1
> ~/tmp
>
> And the code:
>
> # up [|N|pat] -- go up 1, N or until basename matches pat many directories
> # just output directory when not used interactively, e.g. in backticks
> up() {
> local op=print
> [[ -t 1 ]] && op=cd
> case "$1" in
> '') up 1;;
> -*|+*) $op ~$1;;
> <->) $op $(printf '../%.0s' {1..$1});;
> *) local -a seg; seg=(${(s:/:)PWD%/*})
> local n=${(j:/:)seg[1,(I)$1*]}
> if [[ -n $n ]]; then
> $op /$n
> else
> print -u2 up: could not find prefix $1 in $PWD
> return 1
> fi
> esac
> }
>
> On Thu, Apr 14, 2016 at 10:48 AM, Tyler Cipriani
> <tyler at tylercipriani.com> wrote:
> > Here's a useful thing that I've setup recently, it's a variation on
> > Jeroen Janssens's method[0] of quick filesystem naviagation:
> >
> > In your ~/.bashrc (or other shell initialization file)
> >
> > 1. Create a mark function:
> >
> > mark() { mkdir -p "$HOME/.marks"; ln -s "$(pwd)" "$HOME/.marks/$1" }
> >
> > 2. Alias cd to cd -P:
> >
> > cd='cd -P'
> >
> > 3. Make sure "$HOME/.marks" is in your CDPATH variable:
> >
> > export CDPATH="$HOME/.marks"
> >
> > To use this system, simply use the mark function when you're in a
> > directory to create an alias for that directory that you can cd to
> > from anywhere in the filesystem:
> >
> > (ﾉ^ヮ^)ﾉ*:・ﾟ✧ pwd
> > /home/tyler
> > (ﾉ^ヮ^)ﾉ*:・ﾟ✧ mkdir -p tmp/some/really/deep/file/structure/omg/so/long
> > (ﾉ^ヮ^)ﾉ*:・ﾟ✧ cd !$
> > cd tmp/some/really/deep/file/structure/omg/so/long
> > (ﾉ^ヮ^)ﾉ*:・ﾟ✧ mark deep
> > (ﾉ^ヮ^)ﾉ*:・ﾟ✧ cd
> > (ﾉ^ヮ^)ﾉ*:・ﾟ✧ pwd
> > /home/tyler
> > (ﾉ^ヮ^)ﾉ*:・ﾟ✧ cd deep
> > /home/tyler/.marks/deep
> > (ﾉ^ヮ^)ﾉ*:・ﾟ✧ pwd
> > /home/tyler/tmp/some/really/deep/file/structure/omg/so/long
> >
> > Tada!
> >
> > Tyler
> >
> > 0.
> http://jeroenjanssens.com/2013/08/16/quickly-navigate-your-filesystem-from-the-command-line.html
> >
> >
> > On 16-04-14 06:26:34, Jeffrey S. Haemer wrote:
> >> Jed,
> >>
> >> Another helpful tweak for cd is "shopt -s globstar"
> >>
> >> shopt -s globstar
> >> mkdir -p a/b/c/d/e
> >> cd **/e
> >> pwd
> >>
> >>
> >> It's no DWIM, but sometimes it's a good shortcut. I'm lazy and a bad
> >> typist, so my .bashrc includes this:
> >>
> >> shopt -s cdspell dirspell globstar
> >>
> >> Also this:
> >>
> >> alias mroe=more # for Evi
> >>
> >> Perhaps, however, tonight's emacs talk will include ways to use DWIM
> >> commands to turn emacs into the shell-of-your-dreams. :-)
> >>
> >> On Wed, Apr 13, 2016 at 6:38 PM, Jed S. Baer <blug at jbaer.cotse.net>
> wrote:
> >>
> >> > On Wed, 13 Apr 2016 17:59:47 -0600
> >> > Zan Lynx wrote:
> >> >
> >> > > Notice that "warez" is not in your CDPATH. To make "cd warez" work
> you'd
> >> > > need "CDPATH=/home/jbaer/incoming"
> >> >
> >> > Aha. Somehow, I had it in my head it'd be recursive. Funny, how the
> brain
> >> > works sometimes. Thanks.
> >> > _______________________________________________
> >> > Web Page: http://lug.boulder.co.us
> >> > Mailing List: http://lists.lug.boulder.co.us/mailman/listinfo/lug
> >> > Join us on IRC: irc.hackingsociety.org port=6667
> channel=#hackingsociety
> >> >
> >>
> >>
> >>
> >> --
> >> Jeffrey Haemer <jeffrey.haemer at gmail.com>
> >> 720-837-8908 [cell], http://seejeffrun.blogspot.com [blog],
> >> http://www.youtube.com/user/goyishekop [vlog]
> >> *פרייהייט? דאס איז יאַנג דינען וואָרט.*
> >
> >> _______________________________________________
> >> Web Page: http://lug.boulder.co.us
> >> Mailing List: http://lists.lug.boulder.co.us/mailman/listinfo/lug
> >> Join us on IRC: irc.hackingsociety.org port=6667
> channel=#hackingsociety
> >
> > _______________________________________________
> > Web Page: http://lug.boulder.co.us
> > Mailing List: http://lists.lug.boulder.co.us/mailman/listinfo/lug
> > Join us on IRC: irc.hackingsociety.org port=6667 channel=#hackingsociety
>
>
>
> --
> Chris Riddoch
> http://www.syntacticsugar.org/
> _______________________________________________
> Web Page: http://lug.boulder.co.us
> Mailing List: http://lists.lug.boulder.co.us/mailman/listinfo/lug
> Join us on IRC: irc.hackingsociety.org port=6667 channel=#hackingsociety
>
--
Jeffrey Haemer <jeffrey.haemer at gmail.com>
720-837-8908 [cell], http://seejeffrun.blogspot.com [blog],
http://www.youtube.com/user/goyishekop [vlog]
*פרייהייט? דאס איז יאַנג דינען וואָרט.*
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