Solution1.md

Solution for Ex 1

1. Making directory called LC mkdir LC Change directory cd LC

2. Creating file called test in LC dir touch test

3. Adding sh script into test file cat test then cat > test

   #!/bin/sh curl --head --silent https://www.google.com/

4&5&6. When executing the test file with ./test it says Permission denied with ls -al it shows that the test file has not execute permission, it has read and write only

There are 2 solutions for this problem

• with sh test
• change permission chmod +x test then ./test

7. shell knows that the file is supposed to be interpreted using sh as it's indicated after shebang sign #!/bin/sh

8. Making a Python file in the same way touch testpy cat testpy cat > testpy

   #!/bin/python2 print "Hello World" Then change permissiom in order to enable us execute the file with ./testpy: chmod +x testpy

9. > sign used to take the output of a program as an input to other program or coping with cat command For example: cat testpy > cpd-testpy Then cat cpd-testpy it shows:

     > #!/bin/python2
     > print "hello world"
   

   >> sign used to append

10. Using Alias to make shortcuts alias ll='ls -alh'