$ run iosb

> help
format mount dismount exit cftable copy ls stat free rm info

> mount

> info
rootdir = 49
freelist_start = 1
freelist_end = 48
freelist_num = 5921
freelist_pos_ondisc = 30
freelist_pos_inwindow = 30

> ls
one.txt, block 50
replacement, block 61
last-file, block 64

> stat
file name: replacement
header 61
modtime: 2023-02-21 15:50:51
permission: 1
length: 3185
data: 63 62 58 60 59 78 79

> copy
from: /t/system.setup
to: /d/sysset

> ls
one.txt, block 50
replacement, block 61
sysset, block 95
last-file, block 64

> copy
from: /d/sysset
to: /m/
memory 0 to 0xFFFFF
memory 0x7FFF0000 to 0x7FFFFFFF
disc 1 maindrive 6000
start 0x402
sp 0x80000000
pc 0x400

> copy
from: /k/
to: newfile
control-E to end:
hello!
one two three four

> ls
one.txt, block 50
replacement, block 61
sysset, block 95
last-file, block 64
newfile, block 93

> dismount

> exit
$