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| author | user <user@clank> | 2026-09-24 13:56:42 +0200 |
|---|---|---|
| committer | user <user@clank> | 2026-09-24 13:56:42 +0200 |
| commit | 0fa1b946ec5fd3f5cba49215ea9ab62c4004aa53 (patch) | |
| tree | 2d50213ab441f2543ba129241ceda29c5d9b496d /src/programs.asm | |
| parent | ircd: enforce unique nicknames (433), announce renames, fold case (diff) | |
| download | gbos-0fa1b946ec5fd3f5cba49215ea9ab62c4004aa53.tar.gz gbos-0fa1b946ec5fd3f5cba49215ea9ab62c4004aa53.tar.xz gbos-0fa1b946ec5fd3f5cba49215ea9ab62c4004aa53.zip | |
usr: xxd - hex dump a file or stdin
Eight bytes per line rather than the usual sixteen: offset + 8 hex pairs +
the ASCII column is 38 of the terminal's 40 columns, where 16 would wrap
every line and make the dump unreadable. -c overrides it.
No -s (skip): there is no seek syscall, so it streams from the start - the
same reason tail(1) has to keep a ring.
/# xxd h
0000: 48 65 6c 6c 6f 20 67 62 Hello gb
0008: 6f 73 0d 0a os..
blk(1) could already peek at raw disk blocks; nothing could look inside a
file. Verified against known bytes, from stdin, with -c, through a pipe, and
on a missing file.
Diffstat (limited to '')
| -rw-r--r-- | src/programs.asm | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/programs.asm b/src/programs.asm index 11da2b1..a602350 100644 --- a/src/programs.asm +++ b/src/programs.asm @@ -178,6 +178,9 @@ ProgHelp: SECTION "prog_poweroff", ROMX[$4000], BANK[47] ProgPoweroff: INCBIN "build/usr/poweroff.bin" +SECTION "prog_xxd", ROMX[$4000], BANK[48] +ProgXxd: + INCBIN "build/usr/xxd.bin" ; ----------------------------------------------------------------------------- ; PROG_SH (bank 3) - the shell, now written in C (usr/sh.c): parses >/</| and @@ -312,6 +315,8 @@ ProgramTable:: dw ProgHelp db LOW(BANK(ProgPoweroff)), HIGH(BANK(ProgPoweroff)) dw ProgPoweroff + db LOW(BANK(ProgXxd)), HIGH(BANK(ProgXxd)) + dw ProgXxd ProgramTableEnd:: ; ----------------------------------------------------------------------------- @@ -411,4 +416,6 @@ NameTable:: db PROG_HELP db "poweroff", 0 db PROG_POWEROFF + db "xxd", 0 + db PROG_XXD db 0 |