Не самые нубские вопросы. Давайте пообсуждаем.

#include <amxmodx>
#include <amxmisc>

public plugin_init() {
    register_plugin("All Info","1.1","Remo Williams")
    register_concmd("amx_allinfo","allinfo",ADMIN_KICK," - Obtain the specified users Information")
}

public client_putinserver(id) {
    
    new authid[32], usrip[32], name[32]
    
    get_user_authid(id,authid,31)
    get_user_name(id,name,31)
    
    if(!is_user_connected(id)) {
        return PLUGIN_HANDLED
    }
    
    get_user_ip(id,usrip,31,1)
    client_print(id,print_console," ***** [ Name: %s  |  STEAMID: %s  | IP: %s ] ***** ^n",name,authid,usrip)
    log_to_file("allinfo_players.txt","        %s | STEAMID: %s | IP: %s ^n",name,authid,usrip)
    
    return PLUGIN_HANDLED
}

public allinfo(id,level,cid) {
    
    if (!cmd_access(id,level,cid,2)) {
        return PLUGIN_HANDLED
    }
    
    new command[32], arg[32], target, authid[32], usrip[32], name[32]
    
    read_argv(0,command,31)
    read_argv(1,arg,31)
    
    target = cmd_target(id,arg,1)
    
    get_user_authid(target,authid,31)
    get_user_name(target,name,31)
    
    if(!is_user_connected(target)) {
        return PLUGIN_HANDLED
    }
    
    get_user_ip(target,usrip,31,1)
    client_print(id,print_console," ***** [ Name: %s  |  STEAMID: %s  | IP: %s ] ***** ^n",name,authid,usrip)
    log_to_file("allinfo_players.txt","        %s | STEAMID: %s | IP: %s ^n",name,authid,usrip)
    return PLUGIN_HANDLED
}