Update linux.sh

linux.sh

@@ -17,9 +17,18 @@ sudo useradd -M testuser
 # 5. Create a directory named testdir in your home directory
 cd ~
 mkdir testdir
+# or
+mkdir ~/testdir
+# or if need create parent dir
+mkdir -p ~/testdir 
 
 # 6. Change permissions of testdir
+cd ~
 chmod 700 testdir
+# or if need recursive mode
+chmod -R 700 ~/testdir
+# or you can create folder with permissions
+mkdir -r 700 -p ~/testdir
 
 # 7. Display the current network configuration
 ifconfig