Re: Transfer group of directories through rsync

[Kerin Millar]

On Thu, 26 Aug 2021 09:33:11 +0000
hancooper <hancooper@protonmail.com> wrote:

> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> On Thursday, August 26, 2021 8:29 AM, Kerin Millar <kfm@plushkava.net> wrote:
> 
> > On Thu, 26 Aug 2021 01:30:35 +0000
> > hancooper via help-bash@gnu.org wrote:
> >
> > > I have a group of directories stored in a bash array called `group`.
> > > I want to use rsync to transfer the files to the same directory paths, 
> > > but instead of ./01cuneus, the destination is ./temp
> > > I have a bash function that I use, called `myrsync` which takes the 
> > > source and destination parent directories and the depth
> > > level (that's why ones sees three levels down `./01cuneus` in array 
> > > `group`) .
> > > myrsync -j 3 --depth=3 --src=./01cuneus --dst=./temp
> > > group: ./01cuneus/tdr/margi/03d-chmed-mrgn 
> > > ./01cuneus/freelic/latest/freelic-3.4 ./01cuneus/tdr/freelic/releases 
> > > ./01cuneus/books/Infocs/cvs ./01cuneus/histr/gen-adm/behistun 
> > > ./01cuneus/histr/gen-adm/uwdiving ./01cuneus/books/releases/survey 
> > > ./01cuneus/books/GeoMtk/survey--for--geosc ./01cuneus/books/pictures/jpg 
> > > ./01cuneus/books/Infocs/Gra ./01cuneus/tdr/ch-aggr/part2 
> > > ./01cuneus/histr/gen-adm/tdr ./01cuneus/tdr/margi/01d-mimic-mrgn 
> > > ./01cuneus/tdr/ideogr/06b-amcoh ./01cuneus/articles/detailed/infocs 
> > > ./01cuneus/articles/detailed/advoc ./01cuneus/tdr/margi/04d-inadq-mrgn 
> > > ./01cuneus/freelic/releases/freelic-1.0 
> > > ./01cuneus/tdr/margi/05d-wepst-mrgn
> >
> > (
> > cd -- "$src" &&
> > rsync -aiR --from0 --files-from=<(printf '%s\0' "${group[@]#"$src/"}") . 
> > "$dst/"
> > )
> >
> > Kerin Millar
> 
> Thank you so very much Kerin.  Am wondering what the enclosing parentheses 
> are about.
> 

With the parentheses, it constitutes a compound command that is executed in a 
subshell. Changing the current working directory will thus not affect the 
execution environment of the parent shell.

-- 
Kerin Millar