diff --git a/include/commands.h b/include/commands.h
index 097d858..09c8ab0 100644
--- a/include/commands.h
+++ b/include/commands.h
@@ -10,22 +10,16 @@
 #define AUR_UPDATE_COMMAND                "yay -Sau"
 #define AUR_UPDATE_COMMAND_NOCONFIRM      "yay -Sau --noconfirm"
 
-#define PACMAN_EXT_INFO_COMMAND           "pacman -Si --dbpath \"${TMPDIR:-/tmp}/checkup-db-${USER}/\" --logfile /dev/null "
-#define PACMAN_LOCAL_INFO_COMMAND         "pacman -Qi "
-
-#define PACMAN_EXT_SIZE_CUT_COMMAND       " |grep -E 'Download Size|Installed Size'|cut -d':' -f2|tr -d ' '|cut -d'i' -f1 | tr -d 'B'|numfmt --from=iec"
-#define PACMAN_LOCAL_SIZE_CUT_COMMAND     " |grep 'Installed Size'|cut -d':' -f2|tr -d ' '|cut -d'i' -f1 | tr -d 'B'|numfmt --from=iec|tr -d '\n'"
+#define PACMAN_EXT_SIZE_COMMAND       "pacman -Si --dbpath \"${TMPDIR:-/tmp}/checkup-db-${USER}/\" --logfile /dev/null %s |grep -E 'Download Size|Installed Size'|cut -d':' -f2|tr -d ' '|cut -d'i' -f1 | tr -d 'B'|numfmt --from=iec"
+#define PACMAN_LOCAL_SIZE_COMMAND     "pacman -Qi %s |grep 'Installed Size'|cut -d':' -f2|tr -d ' '|cut -d'i' -f1 | tr -d 'B'|numfmt --from=iec|tr -d '\n'"
 
 // apt/dpkg
 #define APT_FETCH_COMMAND                 "sudo apt update >/dev/null 2>&1 || return $?\napt list --upgradable 2>/dev/null | tail -n +2 | awk -F \"/\" '{print $1\" \"$2}' | tr -d ']' | awk '{print $1\" \"$7\" -> \"$3}'"
 #define APT_UPDATE_COMMAND                "sudo apt update && sudo apt upgrade"
 #define APT_UPDATE_COMMAND_NOCONFIRM      "sudo apt update && sudo apt -y upgrade"
 
-#define APT_EXT_INFO_COMMAND              "apt show "
-#define APT_LOCAL_INFO_COMMAND            "dpkg -s "
-
-#define APT_EXT_SIZE_CUT_COMMAND          " 2>/dev/null| grep -E 'Installed-Size:|Download-Size:' | cut -d' ' -f2- | tr -d ', B' | tr 'k' 'K' | numfmt --from=iec | awk '{s=$0;getline;s=$0\"\\n\"s;print s}'"
-#define APT_LOCAL_SIZE_CUT_COMMAND        " 2>/dev/null| grep 'Installed-Size:' | cut -d' ' -f2 | xargs echo '1024 *' | bc"
+#define APT_EXT_SIZE_COMMAND          "apt show %s 2>/dev/null| grep -E 'Installed-Size:|Download-Size:' | cut -d' ' -f2- | tr -d ', B' | tr 'k' 'K' | numfmt --from=iec | awk '{s=$0;getline;s=$0\"\\n\"s;print s}'"
+#define APT_LOCAL_SIZE_COMMAND        "dpkg -s %s 2>/dev/null| grep 'Installed-Size:' | cut -d' ' -f2 | xargs echo '1024 *' | bc"
 
 
 
diff --git a/include/fetch.hpp b/include/fetch.hpp
index 19a140b..47070c0 100644
--- a/include/fetch.hpp
+++ b/include/fetch.hpp
@@ -6,6 +6,6 @@
 //functions
 int fetch_update(repo_update* r, const std::string& name, const std::string& command);
 
-int import_sizes(repo_update* ru, const char* ext_info_command, const char* loc_info_command, const char* ext_cut_command, const char* loc_cut_command);
+int import_sizes(repo_update* ru, const char* ext_size_command, const char* loc_size_command);
 
 #endif //FETCH_HPP
diff --git a/include/print.hpp b/include/print.hpp
index 5b2b1b2..d6a7af3 100644
--- a/include/print.hpp
+++ b/include/print.hpp
@@ -12,6 +12,9 @@
 extern const char* size_suffixes[6];
 extern const int size_print_padding;
 
+//tool
+std::string strpf(std::string const& format, std::string const& var);
+
 //functions
 void help();
 
diff --git a/src/fetch.cpp b/src/fetch.cpp
index f7bdb36..89e0147 100644
--- a/src/fetch.cpp
+++ b/src/fetch.cpp
@@ -8,6 +8,7 @@
 #include <ztd/shell.hpp>
 
 #include "commands.h"
+#include "print.hpp"
 
 //functions
 int fetch_update(repo_update* r, const std::string& name, const std::string& command)
@@ -67,9 +68,9 @@ int fetch_update(repo_update* r, const std::string& name, const std::string& com
 
 
 
-void get_ext_sizes(package_update* pkg, const char* info_command, const char* cut_command)
+void get_ext_sizes(package_update* pkg, const char* command)
 {
-  std::string sizes=ztd::sh(info_command + pkg->name + cut_command);
+  std::string sizes=ztd::sh(strpf(command, pkg->name));
   unsigned int i=0, j=0;
   while(sizes[i]!='\n')
     i++;
@@ -80,24 +81,24 @@ void get_ext_sizes(package_update* pkg, const char* info_command, const char* cu
     i++;
   pkg->new_install_size = std::stoul(sizes.substr(j,i-j));
 }
-void get_loc_size(package_update* pkg, const char* info_command, const char* cut_command)
+void get_loc_size(package_update* pkg, const char* command)
 {
-  std::string size=ztd::sh(info_command + pkg->name + cut_command);
+  std::string size=ztd::sh(strpf(command, pkg->name));
   if(size.size() > 0)
     pkg->current_install_size = std::stoul(size);
   else
     pkg->current_install_size = 0;
 }
 
-int import_sizes(repo_update* ru, const char* ext_info_command, const char* loc_info_command, const char* ext_cut_command, const char* loc_cut_command)
+int import_sizes(repo_update* ru, const char* ext_size_command, const char* loc_size_command)
 {
   const unsigned int n=ru->packages.size();
   #pragma omp parallel for
   for(unsigned int i=0; i<n; i++) //parallel
   {
     package_update* pkg = &(ru->packages[i]);
-    get_ext_sizes(pkg, ext_info_command, ext_cut_command);
-    get_loc_size(pkg, loc_info_command, loc_cut_command);
+    get_ext_sizes(pkg, ext_size_command);
+    get_loc_size(pkg, loc_size_command);
     pkg->net_size = (long int) pkg->new_install_size - (long int) pkg->current_install_size;
   }
   ru->download_size = 0;
diff --git a/src/package_man.cpp b/src/package_man.cpp
index df0794f..b05aef3 100644
--- a/src/package_man.cpp
+++ b/src/package_man.cpp
@@ -71,7 +71,7 @@ int pacman_process(bool yay)
     //size fetch
     if( combine_size )
     {
-      r = import_sizes(&repo, PACMAN_EXT_INFO_COMMAND, PACMAN_LOCAL_INFO_COMMAND, PACMAN_EXT_SIZE_CUT_COMMAND, PACMAN_LOCAL_SIZE_CUT_COMMAND);
+      r = import_sizes(&repo, PACMAN_EXT_SIZE_COMMAND, PACMAN_LOCAL_SIZE_COMMAND);
     }
     if(r!=0)
       return r;
@@ -164,7 +164,7 @@ int apt_process()
 
   if( combine_size )
   {
-    r = import_sizes(&repo, APT_EXT_INFO_COMMAND, APT_LOCAL_INFO_COMMAND, APT_EXT_SIZE_CUT_COMMAND, APT_LOCAL_SIZE_CUT_COMMAND);
+    r = import_sizes(&repo, APT_EXT_SIZE_COMMAND, APT_LOCAL_SIZE_COMMAND);
   }
   if(r!=0)
     return r;
diff --git a/src/print.cpp b/src/print.cpp
index 7ff5908..3683389 100644
--- a/src/print.cpp
+++ b/src/print.cpp
@@ -1,7 +1,7 @@
 #include "print.hpp"
 
 #include <iostream>
-#include <cmath>
+#include <math.h>
 
 #include <ztd/shell.hpp>
 
@@ -11,6 +11,18 @@
 const char* size_suffixes[6] = { "B", "KiB", "MiB", "GiB", "TiB", "PiB"};
 const int size_print_padding=-21;
 
+//tool
+std::string strpf(std::string const& format, std::string const& var)
+{
+  std::string ret;
+  size_t bufsize = format.size()-1 + var.size();
+  char* buf = (char*) malloc( sizeof(char)*bufsize );
+  snprintf(buf, bufsize, format.c_str(), var.c_str());
+  ret = buf;
+  free(buf);
+  return ret;
+}
+
 //functions
 std::pair<double, const char*> convertN(const long int size, unsigned int n)
 {