ctrl + r -> shell command search
gdb:
disassemble /s main
tui enable
layout split
tui reg general
record
info locals
info args
p *array@100
p *myStruct
break main.c:100 if num == 100
watch i if i == 100
info files
info locals
info args
info registers

search writable memory (found with info files) for string
find 0x20000000, 0x200117e0, "shell_uart"

search pointer to struct
find 0x20000000, 0x200117e0, &mgmt_thread_data


.gdbinit
set history save on
set history size 10000
set history filename ~/.gdb_history

then use ctrl+r