execline
Software
skarnet.org

The >& program

>& moves or copies a given file descriptor, then executes a program.

Interface

     >& [ -c ] fdto fdfrom prog...

>& moves the file descriptor number fdfrom, to number fdto, then execs into prog with its arguments. If fdto is open, >& closes it before moving fdfrom to it.

Options

• -c : duplicate fdfrom to fdto instead of moving it; do not close fdfrom.

Notes

• >& -c a b prog... is roughly equivalent to sh -c 'exec prog... a>&b'
• >& a b prog... is roughly equivalent to sh -c 'exec prog... a>&b b<&-'