autoinst

commit 61fe9512014f9b81460aba0ab2d0b59cee112428
parent 5daf4aa0f9ffab8e424778d5597cdd8a273b587f
Author: Morel Bérenger <berengermorel76@gmail.com>
Date:   Thu, 12 Nov 2020 19:59:10 +0100

Revert "improve f76ea195b1: simpler code"

This reverts commit ce855d196b63545539c7efb407ed94a44049bc1d.
ps prints header, thus using cut is not doable

Diffstat:
M
templates/generic/root/etc/sv/udhcpc/run
 | 
6
+++++-

1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/templates/generic/root/etc/sv/udhcpc/run b/templates/generic/root/etc/sv/udhcpc/run
@@ -3,7 +3,11 @@
 set -e
 exec 2>&1
 
-IFACE="$(ps -oargs $PPID | cut -f2 -d' ')"
+# not using cut because ps prints a header, and option to
+# avoid that "feature" is not standard. Other alternative
+# would be to not print 1st line, but it would require 2
+# pipes (ps | tail | cut) and would be similarly random.
+IFACE="$(ps -oargs $PPID | sed -n '/runsv/ s/runsv // p')"
 echo "Starting dhcp client on $IFACE..."
 
 exec udhcpc -i ${IFACE} -f -R -n