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Lesser Known Hacks

linux-security-linux-basics-basics | Level: Easy  | Total Lab Runs: 0 | Premium Lab

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These hacks and tricks can come handy while dealing with different scenarios.

Objective: Try the following less known hacks.

  1. Use python to start a webserver in the present working directory. Open another terminal and do a curl request to it.

  2. View bash command history.

  3. Fire a command and make sure it is not captured in the bash command history.

  4. List all lines of a file in reverse order (i.e. last line first).

  5. Delete all content of a file with one line command . 

  6. Write output  of a command (say ps -ef) to three files at the same time.

  7. Generate MD5 or SHA1 hash of a file

  8. Find previous fired commands from bash history using reverse search.

  9. Check information of a file.

  10. Use screen to preserve the console output and running tasks in case of connection break (mostly useful while working on remote machines).

The following activities are strictly prohibited on this website unless otherwise explicitly stated as allowed in the mission statement:

  • Using automated scanners
  • Using brute force attacks
  • Denial of Service attacks
  • Attacking other student machines in challenges where you might achieve a shell on the vulnerable system
  • Attacking the lab infrastructure

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