Addresses various script improvements

Addresses multiple improvements across various scripts:

- Fixes Valheim unstripped_corlib override by commenting out the lines in the config files.
- Improves process identification for source and goldsrc engines using `pgrep`.
- Enhances backup file identification using `find` with `-maxdepth 1` and `-type f`.
- Fixes glibc version comparison logic in multiple files.
- Improves UT2K4 key installation script by using printf for writing the key to the file.
- Corrects the mod info extraction logic to correctly identify mod entries.
- Improves amxmodx file installation/removal logic to prevent duplicate entries.
- Fixes server info retrieval to handle spaces in the server list.

Relates to #4696

lgsm/modules/fix_vh.sh

@@ -21,8 +21,8 @@ if [ -f "${modsinstalledlistfullpath}" ]; then
 			rm -rf "${serverfiles}/unstripped_corlib"
 		fi
 		sed -i "s/^dllSearchPathOverride=unstripped_corlib/# &/" "${serverfiles}/doorstop_config.ini"
-		sed -i "s/^export DOORSTOP_CORLIB_OVERRIDE_PATH="$BASEDIR\/unstripped_corlib"/# &/" "${serverfiles}/start_game_bepinex.sh"
-		sed -i "s/^export DOORSTOP_CORLIB_OVERRIDE_PATH="${VALHEIM_PLUS_PATH}\/unstripped_corlib"/# &/" "${serverfiles}/start_server_bepinex.sh"
+		sed -i "s|^export DOORSTOP_CORLIB_OVERRIDE_PATH=\"\\\$BASEDIR/unstripped_corlib\"|# &|" "${serverfiles}/start_game_bepinex.sh"
+		sed -i "s|^export DOORSTOP_CORLIB_OVERRIDE_PATH=\"\\\${VALHEIM_PLUS_PATH}/unstripped_corlib\"|# &|" "${serverfiles}/start_server_bepinex.sh"
 	fi
 	# special exports for BepInEx if installed
 	if grep -qE "^bepinexvh" "${modsinstalledlistfullpath}"; then

lgsm/modules/info_distro.sh

@@ -13,9 +13,9 @@ moduleselfname="$(basename "$(readlink -f "${BASH_SOURCE[0]}")")"
 if [ "${status}" == "1" ]; then
 	gameserverpid="$(tmux -L "${socketname}" list-sessions -F "#{session_name} #{pane_pid}" | grep "^${sessionname} " | awk '{print $NF}')"
 	if [ "${engine}" == "source" ]; then
-		srcdslinuxpid="$(ps -ef | grep -v grep | grep "${gameserverpid}" | grep srcds_linux | awk '{print $2}')"
+		srcdslinuxpid="$(pgrep -P "${gameserverpid}" -x srcds_linux 2> /dev/null | head -n 1)"
 	elif [ "${engine}" == "goldsrc" ]; then
-		hldslinuxpid="$(ps -ef | grep -v grep | grep "${gameserverpid}" | grep hlds_linux | awk '{print $2}')"
+		hldslinuxpid="$(pgrep -P "${gameserverpid}" -x hlds_linux 2> /dev/null | head -n 1)"
 	fi
 fi
 ### Distro information
@@ -252,11 +252,11 @@ if [ -d "${backupdir}" ]; then
 	backupcount=0
 
 	# If there are backups in backup dir.
-	if [ "$(find "${backupdir}" -name "*.tar.*" | wc -l)" -ne "0" ]; then
+	if [ "$(find "${backupdir}" -maxdepth 1 -type f -name "*.tar.*" | wc -l)" -ne "0" ]; then
 		# number of backups.
-		backupcount="$(find "${backupdir}"/*.tar.* | wc -l)" # integer
+		backupcount="$(find "${backupdir}" -maxdepth 1 -type f -name "*.tar.*" | wc -l)" # integer
 		# most recent backup.
-		lastbackup="$(ls -1t "${backupdir}"/*.tar.* | head -1)" # string
+		lastbackup="$(find "${backupdir}" -maxdepth 1 -type f -name "*.tar.*" -printf '%T@ %p\n' 2> /dev/null | sort -nr | head -n 1 | cut -d' ' -f2-)" # string
 		# date of most recent backup.
 		lastbackupdate="$(date -r "${lastbackup}")" # string
 		# no of days since last backup.
@@ -272,7 +272,7 @@ netlink=$(${ethtoolcommand} "${netint}" 2> /dev/null | grep Speed | awk '{print
 
 # Sets the SteamCMD glibc requirement if the game server requirement is less or not required.
 if [ "${appid}" ]; then
-	if [ "${glibc}" = "null" ] || [ -z "${glibc}" ] || [ "$(printf '%s\n'${glibc}'\n' "2.14" | sort -V | head -n 1)" != "2.14" ]; then
+	if [ "${glibc}" = "null" ] || [ -z "${glibc}" ] || [ "$(printf '%s\n' "${glibc}" "2.14" | sort -V | head -n 1)" != "2.14" ]; then
 		glibc="2.14"
 	fi
 fi

lgsm/modules/info_messages.sh

@@ -578,7 +578,7 @@ fn_info_messages_script() {
 				:
 			elif [ -z "${glibc}" ]; then
 				echo -e "${lightblue}glibc required:\t${red}UNKNOWN${default}"
-			elif [ "$(printf '%s\n'${glibc}'\n' ${glibcversion} | sort -V | head -n 1)" != "${glibc}" ]; then
+			elif [ "$(printf '%s\n' "${glibc}" "${glibcversion}" | sort -V | head -n 1)" != "${glibc}" ]; then
 				echo -e "${lightblue}glibc required:\t${red}${glibc} ${default}(${red}distro glibc ${glibcversion} too old${default})"
 			else
 				echo -e "${lightblue}glibc required:\t${green}${glibc}${default}"

lgsm/modules/install_ut2k4_key.sh

@@ -18,7 +18,7 @@ if [ -z "${autoinstall}" ]; then
 	echo -e "Once you have the key enter it below"
 	echo -n "KEY: "
 	read -r CODE
-	echo -e ""\""CDKey"\""="\""${CODE}"\""" > "${systemdir}/cdkey"
+		printf '"CDKey"="%s"\n' "${CODE}" > "${systemdir}/cdkey"
 	if [ -f "${systemdir}/cdkey" ]; then
 		fn_script_log_info "UT2K4 Server CD Key created"
 	fi

lgsm/modules/mods_core.sh

@@ -197,14 +197,15 @@ fn_mod_get_info() {
 	# Variable to know when job is done.
 	modinfocommand="0"
 	# Find entry in global array.
-	for ((index = 0; index <= ${#mods_global_array[@]}; index++)); do
+	for ((index = 0; index < ${#mods_global_array[@]}; index++)); do
 		# When entry is found.
 		if [ "${mods_global_array[index]}" == "${currentmod}" ]; then
 			# Go back to the previous "MOD" separator.
-			for ((index = index; index <= ${#mods_global_array[@]}; index--)); do
+			for ((index_search = index; index_search >= 0; index_search--)); do
 				# When "MOD" is found.
-				if [ "${mods_global_array[index]}" == "MOD" ]; then
+				if [ "${mods_global_array[index_search]}" == "MOD" ]; then
 					# Get info.
+					index=${index_search}
 					fn_mods_define
 					modinfocommand="1"
 					break
@@ -331,7 +332,7 @@ fn_compatible_mod_engines() {
 		# How many engines we need to test.
 		enginesamount=$(echo -e "${modengines}" | awk -F ';' '{ print NF }')
 		# Test all subvalue of "modengines" using the ";" separator.
-		for ((gamevarindex = 1; gamevarindex < ${enginesamount}; gamevarindex++)); do
+		for ((gamevarindex = 1; gamevarindex < enginesamount; gamevarindex++)); do
 			# Put current engine name into modtest variable.
 			enginemodtest=$(echo -e "${modengines}" | awk -F ';' -v x=${gamevarindex} '{ print $x }')
 			# If engine name matches.
@@ -472,7 +473,7 @@ fn_mods_check_installed() {
 	# Count installed mods.
 	fn_mods_count_installed
 	# If no mods are found.
-	if [ ${installedmodscount} -eq 0 ]; then
+	if [ "${installedmodscount}" -eq 0 ]; then
 		echo -e ""
 		fn_print_failure_nl "No installed mods or addons were found"
 		echo -e " * Install mods using LinuxGSM first with: ./${selfname} mods-install"
@@ -689,13 +690,9 @@ fn_mod_install_amxmodx_file() {
 		# since it does exist, is the entry already in plugins.ini
 		logentry="line (linux addons/amxmodx/dlls/amxmodx_mm_i386.so) inserted into ${modinstalldir}/addons/metamod/plugins.ini"
 		echo -en "adding amxmodx_mm_i386.so in plugins.ini..."
-		grep -q "amxmodx_mm_i386.so" "${modinstalldir}/addons/metamod/plugins.ini"
-		exitcode=$?
-		if [ "${exitcode}" -ne 0 ]; then
+		if ! grep -q "amxmodx_mm_i386.so" "${modinstalldir}/addons/metamod/plugins.ini"; then
 			# file exists but the entry does not, let's add it
-			echo "linux addons/amxmodx/dlls/amxmodx_mm_i386.so" >> "${modinstalldir}/addons/metamod/plugins.ini"
-			exitcode=$?
-			if [ "${exitcode}" -ne 0 ]; then
+			if ! echo "linux addons/amxmodx/dlls/amxmodx_mm_i386.so" >> "${modinstalldir}/addons/metamod/plugins.ini"; then
 				fn_script_log_fail "${logentry}"
 				fn_print_fail_eol_nl
 			else
@@ -705,9 +702,7 @@ fn_mod_install_amxmodx_file() {
 		fi
 	else
 		# create new file and add the mod to it
-		echo "linux addons/amxmodx/dlls/amxmodx_mm_i386.so" > "${modinstalldir}/addons/metamod/plugins.ini"
-		exitcode=$?
-		if [ "${exitcode}" -ne 0 ]; then
+		if ! echo "linux addons/amxmodx/dlls/amxmodx_mm_i386.so" > "${modinstalldir}/addons/metamod/plugins.ini"; then
 			fn_script_log_fail "${logentry}"
 			fn_print_fail_eol_nl
 			core_exit.sh
@@ -723,10 +718,8 @@ fn_mod_remove_amxmodx_file() {
 		# since it does exist, is the entry already in plugins.ini
 		logentry="line (linux addons/amxmodx/dlls/amxmodx_mm_i386.so) removed from ${modinstalldir}/addons/metamod/plugins.ini"
 		echo -en "removing amxmodx_mm_i386.so in plugins.ini..."
-		grep -q "linux addons/amxmodx/dlls/amxmodx_mm_i386.so" "${modinstalldir}/addons/metamod/plugins.ini"
-		# iIs it found? If so remove it and clean up
-		exitcode=$?
-		if [ "${exitcode}" -eq 0 ]; then
+		# is it found? If so remove it and clean up
+		if grep -q "linux addons/amxmodx/dlls/amxmodx_mm_i386.so" "${modinstalldir}/addons/metamod/plugins.ini"; then
 			# delete the line we inserted
 			sed -i '/linux addons\/amxmodx\/dlls\/amxmodx_mm_i386.so/d' "${modinstalldir}/addons/metamod/plugins.ini"
 			# remove empty lines

linuxgsm.sh

@@ -330,7 +330,8 @@ fn_install_menu() {
 # Gets server info from serverlist.csv and puts in to array.
 fn_server_info() {
 	IFS=","
-	server_info_array=($(grep -aw "${userinput}" "${serverlist}"))
+	server_info_line="$(grep -aw "${userinput}" "${serverlist}" | head -n 1)"
+	read -r -a server_info_array <<< "${server_info_line}"
 	shortname="${server_info_array[0]}"      # csgo
 	gameservername="${server_info_array[1]}" # csgoserver
 	gamename="${server_info_array[2]}"       # Counter Strike: Global Offensive