Harden compatibility hooks and refactor shell scripts

Fix hook execution guards and POSIX issues (including kwin wayland priority).

Improve script idempotence, error handling, and Bash quality with safer loops and checks.

Standardize instructional comments in English and keep behavior resilient when targets are absent.

Author: bigbruno

biglinux-improve-compatibility/usr/bin/biglinux-improve-compatibility

@@ -1,13 +1,16 @@
 #!/bin/bash
 
-ln -sf "/usr/lib/modules/$(uname -r)/build" /usr/src/linux
-
-# if folder not empty
-if [ ! -z "$(ls -A -- /etc/init.d)" ]; then
-
-    #run loop
-    for i  in /etc/init.d/*; do
-        $i start
-    done
-
+# Keep /usr/src/linux pointing to the currently running kernel headers.
+# Legacy build scripts often expect this symlink to exist.
+kernel_build_path="/usr/lib/modules/$(uname -r)/build"
+if [ -e "$kernel_build_path" ]; then
+    ln -sf "$kernel_build_path" /usr/src/linux
 fi
+
+# Start classic SysV init scripts when they are present and executable.
+# This hook is intentionally tolerant because /etc/init.d can be empty.
+for init_script in /etc/init.d/*; do
+    [ -f "$init_script" ] || continue
+    [ -x "$init_script" ] || continue
+    "$init_script" start
+done

biglinux-improve-compatibility/usr/bin/jnlp-check

@@ -1,16 +1,19 @@
 #!/bin/bash
 
-#Translation
-LANGUAGE=$LANG:en
+# Configure gettext fallbacks so UI strings are translated when possible.
+LANGUAGE="$LANG:en"
 export TEXTDOMAINDIR="/usr/share/locale"
 export TEXTDOMAIN=biglinux-improve-compatibility
 
-if [ ! -e /usr/lib/jvm/java-8-jre/jre/bin/javaws ]; then 
+javaws_path="/usr/lib/jvm/java-8-jre/jre/bin/javaws"
+
+# Prompt the user to install Java 8 only when javaws is missing.
+if [ ! -x "$javaws_path" ]; then
     zenity --info --title="JAVA 8" --text $"Necessary to install <b>jre8</b>" --ok-label=$"Cancel" --extra-button=$"Install"
-    if [ "$?" = "1" ];then
+    if [ "$?" = "1" ]; then
         pamac-installer --build jre8
         pkexec archlinux-java set java-8-jre/jre
     fi
 else
-    /usr/lib/jvm/java-8-jre/jre/bin/javaws $*
+    "$javaws_path" "$@"
 fi

biglinux-improve-compatibility/usr/share/libalpm/hooks/biglinux-improve-compatibility-cisco-anyconnect-remove.hook

@@ -6,5 +6,4 @@ Target = cisco-anyconnect
 [Action]
 Description = Auto disable cisco-anyconnect after install
 When = PreTransaction
-Exec = /bin/sh -c 'systemctl disable vpnagentd'
-
+Exec = /bin/sh -c '{ [ -e /usr/lib/systemd/system/vpnagentd.service ] || [ -e /etc/systemd/system/vpnagentd.service ]; } && systemctl disable vpnagentd > /dev/null 2>&1'

biglinux-improve-compatibility/usr/share/libalpm/hooks/biglinux-improve-compatibility-cisco-anyconnect.hook

@@ -7,4 +7,4 @@ Target = cisco-anyconnect
 [Action]
 Description = Auto enable cisco-anyconnect after install
 When = PostTransaction
-Exec = /bin/sh -c 'systemctl --now enable vpnagentd'
+Exec = /bin/sh -c '{ [ -e /usr/lib/systemd/system/vpnagentd.service ] || [ -e /etc/systemd/system/vpnagentd.service ]; } && systemctl enable vpnagentd > /dev/null 2>&1 && systemctl start vpnagentd > /dev/null 2>&1'

biglinux-improve-compatibility/usr/share/libalpm/hooks/biglinux-improve-compatibility-davinci-resolve.hook

@@ -8,4 +8,4 @@ Target = biglinux-improve-compatibility
 [Action]
 Description = Applying modifications to make Davinci Resolve compatible
 When = PostTransaction
-Exec = /bin/sh -c 'rm -f /opt/resolve/libs/libglib-2.0.so*; rm -f /opt/resolve/libs/libgio-2.0.so*; rm -f /opt/resolve/libs/libgmodule-2.0.so*'
+Exec = /bin/sh -c '[ -d /opt/resolve/libs ] && rm -f /opt/resolve/libs/libglib-2.0.so* /opt/resolve/libs/libgio-2.0.so* /opt/resolve/libs/libgmodule-2.0.so*'

biglinux-improve-compatibility/usr/share/libalpm/hooks/biglinux-improve-compatibility-epson-printer-utility-remove.hook

@@ -6,4 +6,4 @@ Target = epson-printer-utility
 [Action]
 Description = Auto enable epson-printer-utility after install
 When = PreTransaction
-Exec = /bin/sh -c 'systemctl disable ecbd'
+Exec = /bin/sh -c '{ [ -e /usr/lib/systemd/system/ecbd.service ] || [ -e /etc/systemd/system/ecbd.service ]; } && systemctl disable ecbd > /dev/null 2>&1'

biglinux-improve-compatibility/usr/share/libalpm/hooks/biglinux-improve-compatibility-epson-printer-utility.hook

@@ -7,4 +7,4 @@ Target = epson-printer-utility
 [Action]
 Description = Auto enable epson-printer-utility after install
 When = PostTransaction
-Exec = /bin/sh -c 'systemctl --now enable ecbd'
+Exec = /bin/sh -c '{ [ -e /usr/lib/systemd/system/ecbd.service ] || [ -e /etc/systemd/system/ecbd.service ]; } && systemctl enable ecbd > /dev/null 2>&1 && systemctl start ecbd > /dev/null 2>&1'

biglinux-improve-compatibility/usr/share/libalpm/hooks/biglinux-improve-compatibility-lact-remove.hook

@@ -6,4 +6,4 @@ Target = lact
 [Action]
 Description = Auto unconfigure lact after remove
 When = PreTransaction
-Exec = /bin/sh -c 'systemctl disable --now lactd'
+Exec = /bin/sh -c '{ [ -e /usr/lib/systemd/system/lactd.service ] || [ -e /etc/systemd/system/lactd.service ]; } && systemctl disable lactd > /dev/null 2>&1 && systemctl stop lactd > /dev/null 2>&1'

biglinux-improve-compatibility/usr/share/libalpm/hooks/biglinux-improve-compatibility-lact.hook

@@ -7,4 +7,4 @@ Target = lact
 [Action]
 Description = Auto configure lact after install
 When = PostTransaction
-Exec = /bin/sh -c 'systemctl enable --now lactd'
+Exec = /bin/sh -c '{ [ -e /usr/lib/systemd/system/lactd.service ] || [ -e /etc/systemd/system/lactd.service ]; } && systemctl enable lactd > /dev/null 2>&1 && systemctl start lactd > /dev/null 2>&1'

biglinux-improve-compatibility/usr/share/libalpm/hooks/biglinux-improve-compatibility-pcsclite-remove.hook

@@ -6,5 +6,4 @@ Target = pcsclite
 [Action]
 Description = Auto disable pcsclite after install
 When = PreTransaction
-Exec = /bin/sh -c 'systemctl disable pcscd'
-
+Exec = /bin/sh -c '{ [ -e /usr/lib/systemd/system/pcscd.service ] || [ -e /etc/systemd/system/pcscd.service ]; } && systemctl disable pcscd > /dev/null 2>&1'