„ipcalc.py“ hinzufügen

ipcalc.py

@@ -0,0 +1,27 @@
+#!/usr/bin/python3
+
+from sys import argv
+from re import search
+
+try:
+    ip = argv[1]
+except Exception as e:
+    print("Usage: ipcalc.py <IP ADDRESS>")
+    exit(0)
+if not search("^(\d{1,3}\.){3}\d{1,3}$", ip):
+    print(f"Invalid address {ip}")
+    exit(0)
+ipdec = list(map(int, ip.split(".")))
+ipdec[0] = ipdec[0]*256**3
+ipdec[1] = ipdec[1]*256**2
+ipdec[2] = ipdec[2]*256**1
+ipdec[3] = ipdec[3]*256**0
+sum0 = sum(ipdec)
+p1 = int(ipdec.pop(0)/256**3)
+sum1 = sum(ipdec)
+p2 = int(ipdec.pop(0)/256**2)
+sum2 = sum(ipdec)
+w = len(ip)+8
+print(f'Address {ip} equals dec {sum0} / {p1}.{sum1} / {p1}.{p2}.{sum2}')
+print(f'{" ": <{w}} equals oct 0{sum0:o} / 0{p1:o}.0{sum1:o} / 0{p1:o}.0{p2:0}.0{sum2:o}')
+print(f'{" ": <{w}} equals hex {sum0:#x} / {p1:#x}.{sum1:#x} / {p1:#x}.{p2:#x}.{sum2:#x}')