diff --git a/README.md b/README.md
index 670029e..97a03f4 100644
--- a/README.md
+++ b/README.md
@@ -120,7 +120,7 @@ $ sudo systemctl enable nohang
 
 ```
 ./nohang -h
-usage: nohang [-h] [-v] [-t] [-p] [-c CONFIG]
+usage: nohang [-h] [-v] [-p] [-c CONFIG]
 
 optional arguments:
   -h, --help            show this help message and exit
@@ -130,6 +130,8 @@ optional arguments:
   -c CONFIG, --config CONFIG
                         path to the config file, default values:
                         ./nohang.conf, /etc/nohang/nohang.conf
+  -cc CONFIG, --check-config CONFIG
+                        ckeck and print config
 ```
 
 ## How to configure nohang
@@ -274,34 +276,6 @@ Process with highest badness (found in 55 ms):
 </details>
 
 
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 ## Logging
 
 To view the latest entries in the log (for systemd users):
@@ -314,14 +288,6 @@ See also `man journalctl`.
 You can also enable `separate_log` in the config to logging in `/var/log/nohang/nohang.log`.
 
 
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 ## Additional tools: oom-sort, psi-top, psi-monitor, i-memhog
 
 
diff --git a/nohang b/nohang
index 2215339..db7ce85 100755
--- a/nohang
+++ b/nohang
@@ -16,6 +16,180 @@ from signal import signal, SIGKILL, SIGTERM, SIGINT, SIGQUIT, SIGHUP
 # define functions
 
 
+
+
+def check_config():
+    """
+    """
+
+    log('#' * 79)
+
+    log('0. Common zram settings')
+
+    log('    ignore_zram: {}'.format(ignore_zram))
+
+    log('1. Thresholds below which a signal should be sent to the victim')
+
+    log('    mem_min_sigterm:     {} MiB, {} %'.format(
+        round(mem_min_sigterm_mb), round(mem_min_sigterm_percent, 1)))
+    log('    mem_min_sigkill:     {} MiB, {} %'.format(
+        round(mem_min_sigkill_mb), round(mem_min_sigkill_percent, 1)))
+
+    log('    swap_min_sigterm:    {}'.format(swap_min_sigterm))
+    log('    swap_min_sigkill:    {}'.format(swap_min_sigkill))
+
+    log('    zram_max_sigterm:    {} MiB, {} %'.format(
+        round(zram_max_sigterm_mb), round(zram_max_sigterm_percent, 1)))
+    log('    zram_max_sigkill:    {} MiB, {} %'.format(
+        round(zram_max_sigkill_mb), round(zram_max_sigkill_percent, 1)))
+
+    log('2. Response on PSI memory metrics')
+
+    log('    ignore_psi:             {}'.format(ignore_psi))
+    log('    psi_path:               {}'.format(psi_path))
+    log('    psi_metrics:            {}'.format(psi_metrics))
+    log('    sigterm_psi_threshold:  {}'.format(sigterm_psi_threshold))
+    log('    sigkill_psi_threshold:  {}'.format(sigkill_psi_threshold))
+    log('    psi_excess_duration:    {} sec'.format(psi_excess_duration))
+    log('    psi_post_action_delay:  {} sec'.format(psi_post_action_delay))
+
+    log('3. The frequency of checking the amount of available memory')
+
+    log('    rate_mem:    {}'.format(rate_mem))
+    log('    rate_swap:   {}'.format(rate_swap))
+    log('    rate_zram:   {}'.format(rate_zram))
+    log('    max_sleep:   {} sec'.format(max_sleep))
+    log('    min_sleep:   {} sec'.format(min_sleep))
+    log('    over_sleep:  {} sec'.format(over_sleep))
+
+    log('4. The prevention of killing innocent victims')
+
+    log('    min_badness:              {}'.format(min_badness))
+    log('    min_delay_after_sigterm:  {} sec'.format(min_delay_after_sigterm))
+    log('    post_zombie_delay:        {} sec'.format(post_zombie_delay))
+    log('    victim_cache_time:        {} sec'.format(victim_cache_time))
+    log('    decrease_oom_score_adj:   {}'.format(decrease_oom_score_adj))
+    log('    oom_score_adj_max:        {}'.format(oom_score_adj_max))
+
+    log('5. Impact on the badness of processes')
+
+    log('5.1. Matching process names with RE patterns')
+    if len(badness_adj_re_name_list) > 0:
+        log('    regexp:         badness_adj:')
+        for i in badness_adj_re_name_list:
+            log('    {}         {}'.format(i[1], i[0]))
+    else:
+        log('    (not set)')
+
+    log('5.2. Matching CGroup_v1-line with RE patterns')
+    if len(badness_adj_re_cgroup_v1_list) > 0:
+        log('    regexp:              badness_adj:')
+        for i in badness_adj_re_cgroup_v1_list:
+            log('    {}         {}'.format(i[1], i[0]))
+    else:
+        log('    (not set)')
+
+    log('5.3. Matching CGroup_v2-line with RE patterns')
+    if len(badness_adj_re_cgroup_v2_list) > 0:
+        log('    regexp:              badness_adj:')
+        for i in badness_adj_re_cgroup_v1_list:
+            log('    {}         {}'.format(i[1], i[0]))
+    else:
+        log('    (not set)')
+
+    log('5.4. Matching eUIDs with RE patterns')
+    if len(badness_adj_re_cgroup_v2_list) > 0:
+        log('    regexp:              badness_adj:')
+        for i in badness_adj_re_uid_list:
+            log('    {}         {}'.format(i[1], i[0]))
+    else:
+        log('    (not set)')
+
+    log('5.5. Matching realpath with RE patterns')
+    if len(badness_adj_re_cgroup_v2_list) > 0:
+        log('    regexp:              badness_adj:')
+        for i in badness_adj_re_realpath_list:
+            log('    {}         {}'.format(i[1], i[0]))
+    else:
+        log('    (not set)')
+
+    log('5.6. Matching cmdlines with RE patterns')
+    if len(badness_adj_re_cgroup_v2_list) > 0:
+        log('    regexp:              badness_adj:')
+        for i in badness_adj_re_cmdline_list:
+            log('    {}         {}'.format(i[1], i[0]))
+    else:
+        log('    (not set)')
+
+    log('5.7. Matching environ with RE patterns')
+    if len(badness_adj_re_cgroup_v2_list) > 0:
+        log('    regexp:              badness_adj:')
+        for i in badness_adj_re_environ_list:
+            log('    {}         {}'.format(i[1], i[0]))
+    else:
+        log('    (not set)')
+
+    log('6. Customize corrective actions')
+
+    if len(soft_actions_list) > 0:
+        log('    Match by:   regexp:     command: ')
+        for i in soft_actions_list:
+            log('    {}         {}        {}'.format(i[0], i[1], i[2]))
+    else:
+        log('    (not set)')
+
+    log('7. GUI notifications')
+
+    log('    gui_notifications:         {}'.format(gui_notifications))
+    log('    gui_low_memory_warnings:   {}'.format(gui_low_memory_warnings))
+    log('    warning_exe:               {}'.format(warning_exe))
+    log('    mem_min_warnings:          {} MiB, {} %'.format(
+        round(mem_min_warnings_mb), round(mem_min_warnings_percent, 1)))
+    log('    swap_min_warnings:         {}'.format(swap_min_warnings))
+    log('    zram_max_warnings:         {} MiB, {} %'.format(
+        round(zram_max_warnings_mb), round(zram_max_warnings_percent, 1)))
+    log('    psi_avg_warnings:          {}'.format(psi_avg_warnings))
+    log('    min_time_between_warnings: {} sec'.format(
+        min_time_between_warnings))
+
+    log('8. Verbosity')
+
+    log('    print_config:             {}'.format(print_config))
+    log('    print_mem_check_results:  {}'.format(print_mem_check_results))
+    log('    min_mem_report_interval:  {} sec'.format(min_mem_report_interval))
+    log('    print_sleep_periods:      {}'.format(print_sleep_periods))
+    log('    print_total_stat:         {}'.format(print_total_stat))
+    log('    print_proc_table:         {}'.format(print_proc_table))
+    log('    extra_table_info:         {}'.format(extra_table_info))
+    log('    print_victim_info:        {}'.format(print_victim_info))
+    log('    print_victim_cmdline:     {}'.format(print_victim_cmdline))
+    log('    max_ancestry_depth:       {}'.format(max_ancestry_depth))
+    log('    debug_gui_notifications:  {}'.format(debug_gui_notifications))
+    log('    separate_log:             {}'.format(separate_log))
+    log('    psi_debug:                {}'.format(psi_debug))
+
+    log('9. Misc')
+
+    log('    max_post_sigterm_victim_lifetime:  {} sec'.format(
+        max_post_sigterm_victim_lifetime))
+    log('    post_kill_exe:                     {}'.format(post_kill_exe))
+    log('    forbid_negative_badness:           {}'.format(
+        forbid_negative_badness))
+
+    #    log(':    {}'.format())
+    log('#' * 79)
+
+    if check_config_flag:
+        log('config is OK')
+        exit()
+
+
+
+
+
+
+
+
 def encoder(string):
     """
     """
@@ -2032,7 +2206,7 @@ v_dict = dict()
 start_time = time()
 
 
-help_mess = """usage: nohang [-h] [-v] [-t] [-p] [-c CONFIG]
+help_mess = """usage: nohang [-h] [-v] [-p] [-c CONFIG] [-cc CONFIG]
 
 optional arguments:
   -h, --help            show this help message and exit
@@ -2041,7 +2215,9 @@ optional arguments:
                         print table of processes with their badness values
   -c CONFIG, --config CONFIG
                         path to the config file, default values:
-                        ./nohang.conf, /etc/nohang/nohang.conf"""
+                        ./nohang.conf, /etc/nohang/nohang.conf
+  -cc CONFIG, --check-config CONFIG
+                        ckeck and print config"""
 
 
 SC_CLK_TCK = os.sysconf(os.sysconf_names['SC_CLK_TCK'])
@@ -2098,16 +2274,26 @@ pid_list = get_pid_list()
 
 print_proc_table_flag = False
 
-if len(argv) == 1:
-    if os.path.exists('./nohang.conf'):
-        config = os.getcwd() + '/nohang.conf'
-    else:
-        config = '/etc/nohang/nohang.conf'
+check_config_flag = False
 
+
+
+if os.path.exists('./nohang.conf'):
+    config = os.getcwd() + '/nohang.conf'
+else:
+    config = '/etc/nohang/nohang.conf'
+
+
+
+
+if len(argv) == 1:
+    pass
 elif len(argv) == 2:
     if argv[1] == '--help' or argv[1] == '-h':
         print(help_mess)
         exit()
+    elif argv[1] == '--check-config' or argv[1] == '-cc':
+        check_config_flag = True
     elif argv[1] == '--version' or argv[1] == '-v':
         print_version()
     elif argv[1] == '--print-proc-table' or argv[1] == '-p':
@@ -2119,14 +2305,15 @@ elif len(argv) == 2:
     else:
         errprint('Unknown option: {}'.format(argv[1]))
         exit(1)
-
 elif len(argv) == 3:
     if argv[1] == '--config' or argv[1] == '-c':
         config = argv[2]
+    elif argv[1] == '--check-config' or argv[1] == '-cc':
+        config = argv[2]
+        check_config_flag = True
     else:
         errprint('Unknown option: {}'.format(argv[1]))
         exit(1)
-
 else:
     errprint('Invalid CLI input: too many options')
     exit(1)
@@ -2179,7 +2366,7 @@ except ValueError:
     # print('It is not Linux 4.5+')
 
 
-log('Config: ' + config)
+log('config: ' + config)
 
 
 ##########################################################################
@@ -2888,164 +3075,23 @@ else:
 
 ##########################################################################
 
-if print_config:
 
-    log('#' * 79)
 
-    log('0. Common zram settings')
 
-    log('    ignore_zram: {}'.format(ignore_zram))
 
-    log('1. Thresholds below which a signal should be sent to the victim')
 
-    log('    mem_min_sigterm:     {} MiB, {} %'.format(
-        round(mem_min_sigterm_mb), round(mem_min_sigterm_percent, 1)))
-    log('    mem_min_sigkill:     {} MiB, {} %'.format(
-        round(mem_min_sigkill_mb), round(mem_min_sigkill_percent, 1)))
 
-    log('    swap_min_sigterm:    {}'.format(swap_min_sigterm))
-    log('    swap_min_sigkill:    {}'.format(swap_min_sigkill))
 
-    log('    zram_max_sigterm:    {} MiB, {} %'.format(
-        round(zram_max_sigterm_mb), round(zram_max_sigterm_percent, 1)))
-    log('    zram_max_sigkill:    {} MiB, {} %'.format(
-        round(zram_max_sigkill_mb), round(zram_max_sigkill_percent, 1)))
+if print_config or check_config_flag:
+    check_config()
 
-    log('2. Response on PSI memory metrics')
 
-    log('    ignore_psi:             {}'.format(ignore_psi))
-    log('    psi_path:               {}'.format(psi_path))
-    log('    psi_metrics:            {}'.format(psi_metrics))
-    log('    sigterm_psi_threshold:  {}'.format(sigterm_psi_threshold))
-    log('    sigkill_psi_threshold:  {}'.format(sigkill_psi_threshold))
-    log('    psi_excess_duration:    {} sec'.format(psi_excess_duration))
-    log('    psi_post_action_delay:  {} sec'.format(psi_post_action_delay))
 
-    log('3. The frequency of checking the amount of available memory')
 
-    log('    rate_mem:    {}'.format(rate_mem))
-    log('    rate_swap:   {}'.format(rate_swap))
-    log('    rate_zram:   {}'.format(rate_zram))
-    log('    max_sleep:   {} sec'.format(max_sleep))
-    log('    min_sleep:   {} sec'.format(min_sleep))
-    log('    over_sleep:  {} sec'.format(over_sleep))
 
-    log('4. The prevention of killing innocent victims')
 
-    log('    min_badness:              {}'.format(min_badness))
-    log('    min_delay_after_sigterm:  {} sec'.format(min_delay_after_sigterm))
-    log('    post_zombie_delay:        {} sec'.format(post_zombie_delay))
-    log('    victim_cache_time:        {} sec'.format(victim_cache_time))
-    log('    decrease_oom_score_adj:   {}'.format(decrease_oom_score_adj))
-    log('    oom_score_adj_max:        {}'.format(oom_score_adj_max))
 
-    log('5. Impact on the badness of processes')
 
-    log('5.1. Matching process names with RE patterns')
-    if len(badness_adj_re_name_list) > 0:
-        log('    regexp:         badness_adj:')
-        for i in badness_adj_re_name_list:
-            log('    {}         {}'.format(i[1], i[0]))
-    else:
-        log('    (not set)')
-
-    log('5.2. Matching CGroup_v1-line with RE patterns')
-    if len(badness_adj_re_cgroup_v1_list) > 0:
-        log('    regexp:              badness_adj:')
-        for i in badness_adj_re_cgroup_v1_list:
-            log('    {}         {}'.format(i[1], i[0]))
-    else:
-        log('    (not set)')
-
-    log('5.3. Matching CGroup_v2-line with RE patterns')
-    if len(badness_adj_re_cgroup_v2_list) > 0:
-        log('    regexp:              badness_adj:')
-        for i in badness_adj_re_cgroup_v1_list:
-            log('    {}         {}'.format(i[1], i[0]))
-    else:
-        log('    (not set)')
-
-    log('5.4. Matching eUIDs with RE patterns')
-    if len(badness_adj_re_cgroup_v2_list) > 0:
-        log('    regexp:              badness_adj:')
-        for i in badness_adj_re_uid_list:
-            log('    {}         {}'.format(i[1], i[0]))
-    else:
-        log('    (not set)')
-
-    log('5.5. Matching realpath with RE patterns')
-    if len(badness_adj_re_cgroup_v2_list) > 0:
-        log('    regexp:              badness_adj:')
-        for i in badness_adj_re_realpath_list:
-            log('    {}         {}'.format(i[1], i[0]))
-    else:
-        log('    (not set)')
-
-    log('5.6. Matching cmdlines with RE patterns')
-    if len(badness_adj_re_cgroup_v2_list) > 0:
-        log('    regexp:              badness_adj:')
-        for i in badness_adj_re_cmdline_list:
-            log('    {}         {}'.format(i[1], i[0]))
-    else:
-        log('    (not set)')
-
-    log('5.7. Matching environ with RE patterns')
-    if len(badness_adj_re_cgroup_v2_list) > 0:
-        log('    regexp:              badness_adj:')
-        for i in badness_adj_re_environ_list:
-            log('    {}         {}'.format(i[1], i[0]))
-    else:
-        log('    (not set)')
-
-    log('6. Customize corrective actions')
-
-    if len(soft_actions_list) > 0:
-        log('    Match by:   regexp:     command: ')
-        for i in soft_actions_list:
-            log('    {}         {}        {}'.format(i[0], i[1], i[2]))
-    else:
-        log('    (not set)')
-
-    log('7. GUI notifications')
-
-    log('    gui_notifications:         {}'.format(gui_notifications))
-    log('    gui_low_memory_warnings:   {}'.format(gui_low_memory_warnings))
-    log('    warning_exe:               {}'.format(warning_exe))
-    log('    mem_min_warnings:          {} MiB, {} %'.format(
-        round(mem_min_warnings_mb), round(mem_min_warnings_percent, 1)))
-    log('    swap_min_warnings:         {}'.format(swap_min_warnings))
-    log('    zram_max_warnings:         {} MiB, {} %'.format(
-        round(zram_max_warnings_mb), round(zram_max_warnings_percent, 1)))
-    log('    psi_avg_warnings:          {}'.format(psi_avg_warnings))
-    log('    min_time_between_warnings: {} sec'.format(
-        min_time_between_warnings))
-
-    log('8. Verbosity')
-
-    log('    print_config:             {}'.format(print_config))
-    log('    print_mem_check_results:  {}'.format(print_mem_check_results))
-    log('    min_mem_report_interval:  {} sec'.format(min_mem_report_interval))
-    log('    print_sleep_periods:      {}'.format(print_sleep_periods))
-    log('    print_total_stat:         {}'.format(print_total_stat))
-    log('    print_proc_table:         {}'.format(print_proc_table))
-    log('    extra_table_info:         {}'.format(extra_table_info))
-    log('    print_victim_info:        {}'.format(print_victim_info))
-    log('    print_victim_cmdline:     {}'.format(print_victim_cmdline))
-    log('    max_ancestry_depth:       {}'.format(max_ancestry_depth))
-    log('    debug_gui_notifications:  {}'.format(debug_gui_notifications))
-    log('    separate_log:             {}'.format(separate_log))
-    log('    psi_debug:                {}'.format(psi_debug))
-
-    log('9. Misc')
-
-    log('    max_post_sigterm_victim_lifetime:  {} sec'.format(
-        max_post_sigterm_victim_lifetime))
-    log('    post_kill_exe:                     {}'.format(post_kill_exe))
-    log('    forbid_negative_badness:           {}'.format(
-        forbid_negative_badness))
-
-    #    log(':    {}'.format())
-    log('#' * 79)
 
 
 ##########################################################################
diff --git a/nohang.1 b/nohang.1
index 08533a5..9274593 100644
--- a/nohang.1
+++ b/nohang.1
@@ -45,6 +45,9 @@ Nohang is a highly configurable daemon for Linux which is able to correctly prev
                         path to the config file, default values:
                         ./nohang.conf, /etc/nohang/nohang.conf
 
+  -cc CONFIG, --check-config CONFIG
+                        ckeck and print config
+
 .SH HOW TO CONFIGURE
 
 The program can be configured by editing the config file.