Re: command for swapping of two files or two dirs?

[Alex fxmbsw7 Ratchev]

#!/usr/bin/gawk -f

BEGIN { if ( ARGC < 3 ) exit
 RS = "\0" ; FS = "<no!exist>" ; OFS = ORS = ""
}

{ save[FILENAME] = save[FILENAME] $0 RT }

END {
 print save[ARGV[1]] >ARGV[2]
 print save[ARGV[2]] >ARGV[1]
}

didnt test also

On Fri, Mar 26, 2021 at 9:21 PM Alex fxmbsw7 Ratchev <fxmbsw7@gmail.com> wrote:
>
> swap() { declare t=$SRANDOM$SRANDOM ; [[ $# != 2 ]] && return 1
>  mv "$1" "$2$t"
>  mv "$2" "$1$t"
>  mv "$1$t" "$1"
>  mv "$2$t" "$2"
> }
>
> didnt test still
> On Fri, Mar 26, 2021 at 9:18 PM Alex fxmbsw7 Ratchev <fxmbsw7@gmail.com> 
> wrote:
> >
> > swap() { declare t= tt= ; [[ $# != 2 ]] && return 1
> >  mv "$1" "${t:=/tmp/$SRANDOM}"
> >  mv "$2" "${tt:=/tmp/$SRANDOM}"
> >  mv "$t" "$2"
> >  mv "$tt" "$1"
> > }
> >
> > On Fri, Mar 26, 2021 at 6:11 PM Peng Yu <pengyu.ut@gmail.com> wrote:
> > >
> > > Hi,
> > >
> > > I can use mv to program a swap bash script. Or use renameat2(...,
> > > RENAME_EXCHANGE) on Linux and renameatx_np(..., RENAME_SWAP) on Darwin
> > > to make a swap C program.
> > >
> > > But since this should be a commonly used function, is there already an
> > > existing well-maintained command for this purpose?
> > >
> > > --
> > > Regards,
> > > Peng
> > >