Set gpg if $GPG not set.

1 files changed, 7 insertions, 4 deletions

diff --git a/localgpgcleankeyring b/localgpgcleankeyring
index b7fb205..96ee875 100755
--- a/localgpgcleankeyring
+++ b/localgpgcleankeyring
@@ -5,8 +5,11 @@
 
 set -e
 
+# set e.g. GPG=gpg2 in environment to override binary to use
+GPG=${GPG:-gpg}
+
 # my keys are those with a corresponding secret key
-mykeys=$(gpg --batch --list-secret-keys --with-colons | grep '^sec' | cut -d: -f5)
+mykeys=$($GPG --batch --list-secret-keys --with-colons | grep '^sec' | cut -d: -f5)
 if [ -z "$mykeys" ]; then
 	# exit if no key string
 	echo "Can't get user's key ID"
@@ -14,7 +17,7 @@ if [ -z "$mykeys" ]; then
 fi
 
 # all of the people who have signed my key
-mysigners=$(gpg --batch --list-sigs --with-colons $mykeys | grep '^sig' | cut -d: -f5 | sort -u)
+mysigners=$($GPG --batch --list-sigs --with-colons $mykeys | grep '^sig' | cut -d: -f5 | sort -u)
 
 # keep all of the signers, plus my key (if I haven't self-signed)
 keepers=$(echo $mykeys $mysigners | tr ' ' '\012' | sort -u)
@@ -23,10 +26,10 @@ keepers=$(echo $mykeys $mysigners | tr ' ' '\012' | sort -u)
 keepers_egrep=$(echo $keepers | sed 's/^/^(/; s/$/)/; s/ /|/g;')
 
 # everyone who isn't on the keepers list is deleted
-deleters=$(gpg --batch --list-keys --with-colons | grep '^pub' | cut -d: -f5 | egrep -v ${keepers_egrep})
+deleters=$($GPG --batch --list-keys --with-colons | grep '^pub' | cut -d: -f5 | egrep -v ${keepers_egrep})
 
 if [ -z "$deleters" ]; then
 	echo "# Nothing to delete!"
 else
-	gpg --batch "$@" --delete-keys $deleters
+	$GPG --batch "$@" --delete-keys $deleters
 fi