#!/bin/rc# E file - B file, wait until it changes, exitrfork eif (! ~ $#* 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 $1while (~ $otm `{mtime $1 | awk '{print $1}'}) sleep 1exit ''
#!/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 ''