Utilities: Use grep -E instead of egrep

egrep has been deprecated for a long time.  This only appeared in
packages with provider_priority or replaces_priority, which presently
only affects user/netqmail and user/postfix.  It's still good to fix.

Closes: #12

1 files changed, 1 insertions, 1 deletions

diff --git a/buildlab.in b/buildlab.in
index 1b56ffc..f75717b 100644
--- a/buildlab.in
+++ b/buildlab.in
@@ -55,7 +55,7 @@ runpart() {
 }
 
 is_vserver() {
-	egrep -q '^VxID:[[:space:]]*[0-9]+' /proc/self/status
+	grep -Eq '^VxID:[[:space:]]*[0-9]+' /proc/self/status
 }
 
 do_chroot_open() {