9 

    10 Programs can be updated using

    11 

    12   hg pull

    13   hg update

    14   hg revert --all

    15 

    16 Emacs can be used to edit files

    17 

    18   emacs -nw ...file....     (is also an alias)

    19 

    20 

    21 C0.c

    22 ====

    23 

    24 Add the bigger string and the long is printed out differently.

    25 

    26 C1.c

    27 ====

    28 

    29 needs to be called using

    30 

    31   ./C1 `args1-good`

    32   ./C1 `args1-bad`

    33 

    34 or in gdb using

    35 

    36   gdb --args ./C1 `args1-bad`

    37 

    38 

    39 C2.c

    40 ====

    41 

    42 called with

    43   

    44   ./args2-good | ./C2

    45   ./args2-bad  | ./C2

    46 

    47 C3.c

    48 ====

    49 (shell injection)

    50 

    51 called with 

    52 

    53   ./C3

    54 

    55 opens a new shell

    56 

    57 

    58 C4.c

    59 ====

    60 Format string attack

    61 

    62   ./C4 "%s"

    63   ./C4 `./args4`