implement basic cat

Author: sheida-shab

implement-shell-tools/cat/cat.py

@@ -0,0 +1,15 @@
+import sys
+import glob
+import argparse
+
+parser=argparse.ArgumentParser(prog="cat",
+                               usage="implement a simple cat")
+parser.add_argument("-n",action="store_true",help="number the output lines")
+parser.add_argument("-b",action="store_true",help="number the output lines without blank ones")
+parser.add_argument("path",nargs="*",help="files to read")
+args=parser.parse_args()
+print(args)
+for per_file in args.path :
+    with open(per_file,"r") as f:
+     print(f.read())
+