shithub: riscv

ref: 7250c438bb124f76aa006dad47b5a3b8f277d1b7
dir: /rc/bin/E/

View raw version 
#!/bin/rc
# E file - B file, wait until it changes, exit
rfork e
if (! ~ $#* 1) {
	echo usage: $0 file >[1=2]
	exit usage
}
if (! test -e $1) {
	echo $0: $1: no such file >[1=2]
	exit no-file
}
otm = `{mtime $1 | awk '{print $1}'}
B $1
while (~ $otm `{mtime $1 | awk '{print $1}'})
	sleep 1
exit ''