Fix Error: GDK_BACKEND does not match available displays

Author: elgalu

bin/firefox-for-sel-2_version

@@ -5,11 +5,14 @@ set -e
 #  firefox -version 2>&1
 #=> Mozilla Firefox 47.0.1
 
+# Fix the DISPLAY env var if we saved it
+[ -f DISPLAY ] && export DISPLAY=$(cat DISPLAY)
+
 # Example:
 #=> 47.0.1
-FFBIN="/home/seluser/firefox-for-sel-2/firefox"
-if ${FFBIN} >/dev/null 2>&1; then
-  ${FFBIN} -version 2>&1 | grep -Po '(?<=Firefox )([a-z0-9\.]+)'
+FF_CMD="/home/seluser/firefox-for-sel-2/firefox -version"
+if ${FF_CMD} >/dev/null 2>&1; then
+  ${FF_CMD} 2>&1 | grep -Po '(?<=Firefox )([a-z0-9\.]+)'
 else
-  ${FFBIN} #fail and show error
+  ${FF_CMD} #fail and show error
 fi

bin/firefox-for-sel-3_version

@@ -5,11 +5,14 @@ set -e
 #  firefox -version 2>&1
 #=> Mozilla Firefox 49.0.1
 
+# Fix the DISPLAY env var if we saved it
+[ -f DISPLAY ] && export DISPLAY=$(cat DISPLAY)
+
 # Example:
 #=> 49.0.1
-FFBIN="/home/seluser/firefox-for-sel-3/firefox"
-if ${FFBIN} >/dev/null 2>&1; then
-  ${FFBIN} -version 2>&1 | grep -Po '(?<=Firefox )([a-z0-9\.]+)'
+FF_CMD="/home/seluser/firefox-for-sel-3/firefox -version"
+if ${FF_CMD} >/dev/null 2>&1; then
+  ${FF_CMD} 2>&1 | grep -Po '(?<=Firefox )([a-z0-9\.]+)'
 else
-  ${FFBIN} #fail and show error
+  ${FF_CMD} #fail and show error
 fi

bin/firefox_version

@@ -5,6 +5,9 @@ set -e
 #  firefox -version 2>&1
 #=> Mozilla Firefox 45.0.2
 
+# Fix the DISPLAY env var if we saved it
+[ -f DISPLAY ] && export DISPLAY=$(cat DISPLAY)
+
 # Example:
 #=> 45.0.2
 if firefox -version >/dev/null 2>&1; then