Editor

gedit Tilde Files (flag~)

gedit generates a backup file with the ~ suffix when a file gets edited. For example, if the file flag was edited in gedit, gedit would generate a backup file named flag~. This file might be accessbile through URL:

http://<ip>:<port>/flag~

Vim Swap Files (.flag.swp)

When vim crashes, it generates a swap file (.swp) to backup the content being editing. For example, if vim crashes when editing the file flag, it generates a backup file named .flag.swp. If we have access to this backup file, we can recover the flag:

$ wget <path>/.flag.swp
$ touch flag
$ vim -r flag

Interestingly enough, vim assigns different names for different crashes:

• First crash: .flag.swp

• Second crash: .flag.swo

• Third crash: .flag.swn