pw-schedule: Use locale-independent date format for days

Having en_GB.UTF-8 as the default locale on my system, pw-schedule fails
to run with the following error:

    $ ./pw-schedule
    date: invalid date ‘Mon 18 Jul 10:11:30 BST 2022’

Apparently, "date" is not able to parse the date it generated in that
locale.

To fix this, use the same, locale-independent format for days
everywhere: +%m/%d/%Y.

Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

1 files changed, 4 insertions, 5 deletions

diff --git a/pw-schedule b/pw-schedule
index 621070b..bd7108b 100755
--- a/pw-schedule
+++ b/pw-schedule
@@ -10,18 +10,17 @@ source $(dirname $0)/lib.sh
 
 reviewer=( Alexei Daniel Andrii Martin Song Yonghong John KP Stanislav Hao Jiri )
 out="schedule.csv"
-rstart=$(date)
+rstart=$(date '+%m/%d/%Y')
 weeks=$(expr 2 '*' ${#reviewer[@]})
 
 usage()
 {
-  tmp=$(date --date "$rstart" '+%m/%d/%Y')
   cat <<-EOF
   usage: pw-schedule [-h] [-o FILE] [-s START_DATE] [-n WEEKS]
 
   defaults:
     FILE       := $out
-    START_DATE := $tmp
+    START_DATE := $rstart
     WEEKS      := $weeks
 EOF
   exit
@@ -68,12 +67,12 @@ do
   if [ "$day" = "Monday" ]; then
     stride=3
   fi
-  rend=$(date --date "$rstart +$stride days")
+  rend=$(date --date "$rstart +$stride days" '+%m/%d/%Y')
   rs=$(date --date "$rstart" '+%m/%d/%Y')
   re=$(date --date "$rend" '+%m/%d/%Y')
   echo "BPF Reviewer: $dev,$rs,$re" >> $out
   if [ $stride -eq 2 ]; then
-    rend=$(date --date "$rend +$stride days")
+    rend=$(date --date "$rend +$stride days" '+%m/%d/%Y')
   fi
   rstart=$rend
 done