Combining and compressing files into tar as well as uncombining and compressing those files. We also use xargs to look at what is in the files and create a little report. Lastly we use gpg to encrypt and decrypt a file.
Commands in the video
1 clear
2 ls
3 mkdir tmp
4 cd tmp
5 mkdir -p {1..5}/{a..z}/{A..D}
6 ls
7 ls 1
8 ls 5
9 mv ../site.tar .
10 ls -l
11 tar -czvf numbers.tgz 1 2 3 4 5
12 ls
13 tar -xzvf site.tar
14 ls -l
15 find . | xargs grep http://
16 find . | xargs grep http:// 2(Not allowed) /dev/null | wc -l
17 find . | xargs grep https:// 2(Not allowed) /dev/null | wc -l
18 man gpg
19 ls
20 echo "this is cool" (Not allowed) myfile
21 cat myfile
22 gpg -c myfile
23 ls -l
24 cat myfile.gpg
25 cat myfile
26 rm myfile
27 ls
28 cat myfile
29 gpg myfile.gpg
30 ls
31 cat myfile
32 cat myfile.gpg
33 cat myfile
2