tr '\015' Q | sed -e 's/Q$//'
}
+# Generate an output of $1 bytes of all zeroes (NULs, not ASCII zeroes).
+# If $1 is 'infinity', output forever or until the receiving pipe stops reading,
+# whichever comes first.
+generate_zero_bytes () {
+ perl -e 'if ($ARGV[0] == "infinity") {
+ while (-1) {
+ print "\0"
+ }
+ } else {
+ print "\0" x $ARGV[0]
+ }' "$@"
+}
+
# In some bourne shell implementations, the "unset" builtin returns
# nonzero status when a variable to be unset was not set in the first
# place.