The Official Radare2 Book

How to run the program using the debugger

r2 -d /bin/ls - start in debugger mode => [video]

How do I attach/detach to running process ? (gdb -p)

r2 -d - attach to process

r2 ptrace://pid - same as above, but only for io (not debugger backend hooked)

[0x7fff6ad90028]> o-225 - close fd=225 (listed in o~[1]:0)

r2 -D gdb gdb://localhost:1234 - attach to gdbserver

How to set args/environment variable/load a specific libraries for the debugging session of radare

Use rarun2 (libpath=$PWD:/tmp/lib, arg2=hello, setenv=FOO=BAR ...) see rarun2 -h / man rarun2

How to script radare2 ?

r2 -i ... - run a script after loading the file => [video]

r2 -I ... - run a script before loading the file

r2 -c $@ | awk $@ - run through awk to get asm from function => [link]

[0x80480423]> . scriptfile - interpret this file => [video]

[0x80480423]> #!c - enter C repl (see #! to list all available RLang plugins) => [video], everything have to be done in a oneliner or a .c file must be passed as an argument.

To get #!python and much more, just build radare2-bindings

How to list Source code as in gdb list ?

CL @ sym.main - though the feature is highly experimental