fixes #5

cat.c

@@ -13,7 +13,7 @@ return 0;
 }
 if(strcmp(argv[1],"-v")==0)
      {
-        printf("patricus utils, version %s",version);
+        printf("patricus utils, version %s",VERSION);
         return 0;
 }
 for(int meowing=1;meowing<argc;meowing++){

cmpsize.c

@@ -11,7 +11,7 @@ int main(int argc, char *argv[]) {
         return 1;
     }        
     else if(strcmp("-v", argv[1]) == 0) {
-        printf("patricus utils, version %s", version);
+        printf("patricus utils, version %s", VERSION);
         return 0;
     }       
     else if(argc == 2) {

meson.build

@@ -1,4 +1,5 @@
-project('patricus utils', 'c', version: '3.4')
+project('patricus utils', 'c', 'cpp', version: '4.0', default_options: ['cpp_std=c++20'])
+
 branch_name = run_command('git', 'rev-parse', '--abbrev-ref', 'HEAD', check: true).stdout().strip()
 if branch_name.startswith('stable/')
   full_version = meson.project_version()
@@ -7,9 +8,8 @@ else
   full_version = '@0@(@1@)'.format(meson.project_version(), git_hash)
 endif
 
-# Generate header
 conf = configuration_data()
-conf.set('version', '"@0@"'.format(full_version))
+conf.set('VERSION', '"@0@"'.format(full_version))
 
 configure_file(
   output: 'version.h',
@@ -17,4 +17,5 @@ configure_file(
 )
 
 executable('cat', ['cat.c', 'stdin.c'], include_directories: '.')
-executable('cmpsize', ['cmpsize.c', 'bytes.c'], include_directories: '.')
+executable('cmpsize', ['cmpsize.c', 'bytes.c'])
+executable('nuke', ['nuke.cpp'], include_directories: '.')

nuke.cpp

@@ -0,0 +1,27 @@
+#include<version.h>
+#include<string>
+#include<filesystem>
+#include<iostream>
+using namespace std;
+int main(int argc, char* argv[])
+{
+for(int i=1;i<argc;i++){
+if (string(argv[i]) == "-v")
+{
+cout<<"patricus utils, version "+string(VERSION);
+return 0;
+}
+    if(!filesystem::exists(argv[i]))
+{
+cerr<<"error, no such file or directory";
+return 1;
+}
+try
+{
+filesystem::remove_all(argv[i]);
+}
+catch(std::filesystem::filesystem_error){
+    cout<<"error: permission denied";
+}
+}
+}