notes

% untitled

link

repo: https://gitee.com/lxhillwind/lxhillwind / https://github.com/lxhillwind/lxhillwind.github.io

vm

Choose based on host OS.

Just use qemu on Linux. Guest OS (Windows / Linux) in VirtualBox (Linux host) seems to have font rendering issue (scale mode?). GL support (Linux guest on Linux host) is much better than on VirtualBox.

Use VirtualBox on macos. qemu network (Windows guest) seems buggy. Display (cocoa) is also not well supported.

vim

clipboard via osc52

Access system clipboard in session via ssh, serial console, etc.

Pack 'https://github.com/fcpg/vim-osc52', #{commit: '551f20e62e68684a5b745ae08b0c4236d86e4c2b'}

nnoremap <Leader>y :Oscyank<CR>
nnoremap <Leader>p :echoerr 'system clipboard is not available!'<CR>

about go-! option

It makes :!{cmd} in gvim on win32 run cmd in embeded window, but stderr (?) is discarded.

So do not use it.

busybox-w32

build busybox-w32 using alpine linux (i386/alpine):

# build dependency
apk add musl-dev gcc make ncurses-dev mingw-w64-gcc

# then run `make mingw32_defconfig` and `make`, according to busybox-w32 README.md

# since perl is not installed, doc generation will fail;
# but $? should be 0 (err in doc generation is ignored).

awk

portable shebang

cmd in //

NOTE:

with pipe:

#!/bin/sh
/ 2>\/dev\/null; exec sh -ec '{cmd} | awk -f "$0"' "$0" / {}

# ...

without pipe:

#!/bin/sh
/ 2>\/dev\/null; exec awk -f "$0"; / {}

# ...

cmd in {}

NOTE:

with pipe:

#!/bin/sh
false {
    "exec" "sh" "-ec" "cmd | awk -f \"\$0\"" "$0"
}

# ...

without pipe:

#!/bin/sh
false {
    "exec" "awk" "-f" "$0"
}

# ...

awk program

NOTE:

with pipe:

#!/bin/sh
exec sh -c '{cmd} | awk "$0"' "$(awk 'NR > 2' "$0")"

# ...

without pipe:

#!/bin/sh
exec awk "$(awk 'NR > 2' "$0")"

# ...

ssh

local port forwarding

-D flag.

ssh -D 9050 -N "{host}"

kde

bind Meta (Windows) key

When setting shortcut key, press Meta+F1.

source: https://unix.stackexchange.com/questions/519187/use-meta-super-windows-whatever-key-to-open-kde-plasmas-application-launcher-k

20220826_113926 Zettelkasten for task tracking

#Zettelkasten #work

https://zettelkasten.de/introduction/

20220827_093944 botw IST bug

#botw #ist #game

20220827_144841 support wsl in gvim win32

#wsl #vim #gvim

[include]
    path = ~/c-lx/.gitconfig  # modify to path-to-windows-gitconfig

Then git g will work as expected.

cons:

20220827_154900 install fedora (actually any distro) in wsl (wsl1)

#wsl #docker #fedora

via wsl’s --import option. It also supports wsl version 1!

fedora only: to get rootfs of fedora, go to https://mirrors.bfsu.edu.cn/fedora/releases/36/Container/x86_64/images/, download the image, and extract it; there is a .tar file in it, which contains rootfs. (this should also works for other docker image generated via podman save {image} > xxx.tar.

tip: after setting up new user, edit /etc/wsl.conf to set default user on login.

https://docs.microsoft.com/zh-cn/windows/wsl/use-custom-distro

20220912_093801 git on windows: how to change file mode

git update-index --chmod=+x path/to/file.ext
# or make it not executable:
git update-index --chmod=-x path/to/file.ext

Git stores only one bit for file permissions so it’s not possible to change CHMOD values to something else, such as 0750 in Windows.

20220918_152356 chicken scheme: cross compile (from linux x64 to windows i386)

#zig #scheme

requirement

steps

make C_COMPILER=zig-cc-i386-windows-gnu PLATFORM=cross-linux-mingw LIBRARIAN='zig ar' CHICKEN=chicken libchicken.a

csc -t t.scm

zig-cc-i386-windows-gnu -o t.exe t.c ~/repos/chicken-core/libchicken.a -lws2_32 -I ~/repos/chicken-core

(c to exe in seperate step for easier inspection:)

t.c => t.obj:

`zig-cc-i386-windows-gnu t.c -c -I ~/repos/chicken-core`

t.obj => t.exe:

`zig-cc-i386-windows-gnu -o t.exe t.obj ~/repos/chicken-core/libchicken.a -lws2_32`

NOTE: zig-cc-i386-windows-gnu is a wrapper for zig cc -target i386-windows-gnu. Some languages (like Nim / Golang) don’t support space in C compiler name, so I create the wrapper script to make them work.

Windows XP compatibility?

To make generated exe work in Windows XP, before building libchicken.a, function GetTickCount64 in source code runtime.c should be replaced (or comment out).

For genereted exe, byte patching is required (xxd, replace the first 0600 in the 13th line of xxd output with 0500 (0501?)).

If more module is loaded into scheme code, then maybe more win32 function would be loaded into final exe. For example, to compile csi.scm to csi.exe, GetFinalPathNameByHandle will be loaded, which is not available in Windows XP.

20220920_213506 less.exe: cross compile (from linux to windows i386)

#less #Windows_XP

patch for Makefile.wng:

26c26
< CC = gcc
---
> CC = zig-cc-i386-windows-gnu
39a40
> REGEX_PACKAGE = regcomp-local
63c64
< SHELL = cmd.exe
---
> SHELL = sh
76c77
< 	${CC} -c -I. ${CFLAGS} $<
---
> 	${CC} -c -I. ${CFLAGS} $< -o $*.o
104c105
< 	${CC} ${LDFLAGS} -o $@ ${OBJ} ${LIBS}
---
> 	${CC} ${LDFLAGS} -o $@.exe ${OBJ} ${LIBS}
107c108
< 	${CC} ${LDFLAGS} -o $@ lesskey.o lesskey_parse.o version.o xbuf.o
---
> 	${CC} ${LDFLAGS} -o $@.exe lesskey.o lesskey_parse.o version.o xbuf.o
110c111
< 	${CC} ${LDFLAGS} -o $@ lessecho.o version.o
---
> 	${CC} ${LDFLAGS} -o $@.exe lessecho.o version.o
113c114
< 	copy $< $@
---
> 	cp $< $@

Then run make -f Makefile.wng less to get less.exe.

To make less.exe run on Windows XP, modify binary, replace \x06 with \x05 (see [[20220918_152356]]).

20221004_100107 Windows XP (or: legacy windows version) font tweak

#Windows_XP #vm

Just use mactype. (it seems that default setting (with MacTray standalone mode?) is ok.)

For Windows XP, use https://github.com/snowie2000/mactype/releases/tag/2019.1-beta6.

20221005_112443 Windows XP winpty CJK font display (hot)fix (update)

#Windows_XP #winpty #CJK #vim

Open ConEmu (then close it if desired). After this, winpty CJK font will display correctly.

update (permanent solution): set environment variable WINPTY_SHOW_CONSOLE=1 to display the hidden cmd console (e.g. let $WINPTY_SHOW_CONSOLE = "1", then terminal or some other way to open winpty). Then, click on left-top corner, ‘属性’ -> ‘字体’, change font from ‘点阵字体’ to ‘新宋体’; confirm the change and apply the second option (apply permanently).

possible related issue: https://github.com/rprichard/winpty/issues/41 (at least I know WINPTY_SHOW_CONSOLE env setting from this, and then “solved” this particular problem)

20221029_130949 idea: EAF like library, but not bundled to emacs

#eaf #pyqt #idea