Update AppRum to set PGHOST

If no PGHOST is in the environment, set it to search multiple unixsock
directories.

2 files changed, 8 insertions, 2 deletions

diff --git a/AppRun b/AppRun
index 0a5f87c..43a7fa6 100755
--- a/AppRun
+++ b/AppRun
@@ -1,5 +1,8 @@
 #!/bin/sh
 
 export LD_LIBRARY_PATH="${APPDIR}/usr/lib:${LD_LIBRARY_PATH}"
+if [ "x$PGHOST" = "x" ]; then
+	export PGHOST="/tmp,/var/run/postgresql"
+fi
 
 ${APPDIR}/usr/bin/pg_top $@
diff --git a/README.appimage b/README.appimage
index 79c2e21..fe519e8 100644
--- a/README.appimage
+++ b/README.appimage
@@ -19,9 +19,12 @@ Use a custom configured PostgreSQL build with minimal options enabled to reduce
 library dependency support.  Part of this reason is to make it easier to
 include libraries with compatible licences.  Part of the reason is to be able
 to build libpq with minimal development dependencies for PostgreSQL, since the
-purpose is just to build a pg_top AppImage.
+purpose is just to build a pg_top AppImage.  At least version PostgreSQL 10
+should be used so that PGHOST can be defined in the AppRun script to search
+multiple potential unixsock directories if no PGHOST is defined in the user's
+environment.
 
-At the time of this document, PostgreSQL 9.4 was configured with the following
+At the time of this document, PostgreSQL 10 was configured with the following
 options:
 
     ./configure --without-ldap --without-readline --without-zlib --without-gssapi