diff --git a/home/base/core.nix b/home/base/core.nix
index c7e8eca0..4406ce30 100644
--- a/home/base/core.nix
+++ b/home/base/core.nix
@@ -21,10 +21,12 @@
     # networking tools
     mtr # A network diagnostic tool
     iperf3
-    ldns # replacement of dig, it provide the command `drill`
+    dnsutils  # `dig` + `nslookup`
+    ldns # replacement of `dig`, it provide the command `drill`
     aria2 # A lightweight multi-protocol & multi-source command-line download utility
     socat # replacement of openbsd-netcat
     nmap # A utility for network discovery and security auditing
+    ipcalc  # it is a calculator for the IPv4/v6 addresses
 
     # misc
     cowsay
diff --git a/home/linux/base/system-tools.nix b/home/linux/base/system-tools.nix
index c2280a72..a123e4c1 100644
--- a/home/linux/base/system-tools.nix
+++ b/home/linux/base/system-tools.nix
@@ -22,9 +22,14 @@
     lsof # list open files
 
     # system tools
-    ethtool
     sysstat
     lm_sensors # for `sensors` command
+    ethtool
+    pciutils # lspci
+    usbutils # lsusb
+    hdparm # for disk performance, command 
+    dmidecode # a tool that reads information about your system's hardware from the BIOS according to the SMBIOS/DMI standard
+
     cifs-utils # for mounting windows shares
   ];