Plan 9 from Bell Labs’s /usr/web/sources/plan9/rc/bin/ape/dircp
#!/bin/rc # dircp src dest - copy a tree with ape's tar switch($#*){ case 2 @{cd $1 && tar cf /fd/1 .} | @{cd $2 && tar xf /fd/0} case * echo usage: dircp from to >[1=2] exit usage }