sudo apt-get update && sudo apt-get upgrade

sudo dpkg --add-architecture i386; sudo apt update; sudo apt install mailutils postfix curl wget file tar bzip2 gzip unzip bsdmainutils python util-linux ca-certificates binutils bc jq tmux lib32gcc1 libstdc++6 lib32stdc++6 steamcmd

   Usage: useradd [options] LOGINuseradd -Duseradd -D [options]

  Options:
-b, --base-dir BASE_DIR       base directory for the home directory of the
new account
-c, --comment COMMENT         GECOS field of the new account
-d, --home-dir HOME_DIR       home directory of the new account
-D, --defaults                print or change default useradd configuration
-e, --expiredate EXPIRE_DATE  expiration date of the new account
-f, --inactive INACTIVE       password inactivity period of the new account
-g, --gid GROUP               name or ID of the primary group of the new
account
-G, --groups GROUPS           list of supplementary groups of the new
account
-h, --help                    display this help message and exit
-k, --skel SKEL_DIR           use this alternative skeleton directory
-K, --key KEY=VALUE           override /etc/login.defs defaults
-l, --no-log-init             do not add the user to the lastlog and
faillog databases
-m, --create-home             create the user's home directory
-M, --no-create-home          do not create the user's home directory
-N, --no-user-group           do not create a group with the same name as
the user
-o, --non-unique              allow to create users with duplicate
(non-unique) UID
-p, --password PASSWORD       encrypted password of the new account
-r, --system                  create a system account
-R, --root CHROOT_DIR         directory to chroot into
-s, --shell SHELL             login shell of the new account
-u, --uid UID                 user ID of the new account
-U, --user-group              create a group with the same name as the user
-Z, --selinux-user SEUSER     use a specific SEUSER for the SELinux user mapping
--extrausers              Use the extra users database

sudo useradd -G root -m -r -s /bin/bash l4d2server

sudo passwd l4d2server

ssh:keygen

Enter file in which to save the key (/home/l4d2server/.ssh/id_rsa):"

Enter passphrase (empty for no passphrase):

cat /root/.ssh/id_rsa.pub >> /root/.ssh/authorized_keys //这一步是把生成的公钥导入到ssh的配置文件中chmod 600 authorized_keys //以防万一，我们给予文件更高的权限chmod 700 /root/.sshvim /etc/ssh/sshd_config //打开ssh配置文件

service sshd restart //重启ssh服务

su l4d2servercd ~mkdir ./.sshchmod 700 ./.ssh 

su l4d2servercd ~/.ssh/

vim ~/.ssh/authorized_keys

service sshd restart

su l4d2servercd ~

wget -O linuxgsm.sh https://linuxgsm.sh && chmod +x linuxgsm.sh && bash linuxgsm.sh l4d2server

./l4d2server install

su l4d2servercd ~

./l4d2server mi//按照提示安装metamod和sourcemod

########################################## Common Settings ############################################ PLACE GLOBAL SETTINGS HERE## These settings will apply to all instances

## LinuxGSM Stats
# Send useful stats to LinuxGSM developers.
# https://docs.linuxgsm.com/configuration/linuxgsm-stats
# (on|off)
stats="on"

## Updating | https://docs.linuxgsm.com/commands/update
updateonstart="on"

######################################### Instance Settings ########################################### PLACE INSTANCE SETTINGS HERE## These settings will apply to a specific instance

## Server Start Command | https://docs.linuxgsm.com/configuration/start-parameters#additional-parameters
fn_parms(){
parms="-game left4dead2 -strictportbind -ip ${ip} -port ${port} +clientport ${clientport} -tickrate 100 -nomaster +map ${defaultmap} +servercfgfile ${servercfg} -maxplayers ${maxplayers}"
}

## Server Start Settings | https://docs.linuxgsm.com/configuration/start-parameters
maxplayers="8"

//--> This is the name for your serverhostname "[HK]第三方投票换地图换模式"sv_steamgroup 11223344sv_search_key ""sv_steamgroup_exclusive 0rcon_password "yourRCONpassword"sv_tags "hidden"

//Allow connections without creating lobby (connect IP:PORT)
//--> "0" = Off
//--> "1" = On
sv_allow_lobby_connect_only 0

sm_cvar sb_all_bot_game 1

//--> All talk - Allow both teams to use audio chat to speak with each other
//--> "0" = Off
//--> "1" = On
sv_alltalk 1

sv_region 255

sv_cheats 0

sv_contact "your@"
//--> Admin Contact email address to display on serverinfo.

// Log Settings
log on
sv_logecho 0
sv_logfile 1
sv_log_onefile 0
sv_logbans 1
sv_logflush 0
sv_logsdir logs

//sm_cvar mp_gamemode versus
//--> sourcemod override forcing gamemod.
//--> versus, survival, scavenge, coop.

// Some tweaking
//--> Remove the clamp.
sm_cvar sv_client_cmdrate_difference 0

// Rate Settings.By tickrate-enabler
sm_cvar sv_minrate 100000
sm_cvar sv_maxrate 100000
sm_cvar sv_minupdaterate 100
sm_cvar sv_maxupdaterate 100
sm_cvar sv_mincmdrate 100
sm_cvar sv_maxcmdrate 100
sm_cvar sv_client_min_interp_ratio -1
sm_cvar sv_client_max_interp_ratio 0
sm_cvar nb_update_frequency 0
sm_cvar net_splitrate 2
sm_cvar fps_max 0
sm_cvar net_splitpacket_maxrate 50000

// Admin Menu plugins
sm_cvar bind i "show_menu Menu"

// Execute ban files
exec banned_user.cfg
exec banned_ip.cfg
writeid
writeip

5794 1 "z282846139" STEAM_1:1:124906097 00:28 97 0 active 30000

// Examples: (do not put // in front of real lines, as // means 'comment')////   "STEAM_0:1:16"        "bce"                //generic, kick, unban for this steam ID, no immunity//   "!"        "99:z"                //all permissions for this ip, immunity value is 99//   "BAILOPAN"            "abc"    "Gab3n"        //name BAILOPAN, password "Gab3n": gets reservation, generic, kick//

"!"        "99:z"            //all permissions for this ip, immunity value is 99"STEAM_1:1:124906097"        "99:z"    //all permissions for this ip, immunity value is 99