Tools on MEMEX

linux手册

wyz2016zxc@outlook.com(Hiraeth) — Sat, 25 Oct 2025 00:00:00 +0000

#Linux Handbook

TEXT

bash <(curl -sSL https://linuxmirrors.cn/main.sh)

TEXT

bash <(curl -sSL https://linuxmirrors.cn/docker.sh)

TEXT

bash <(curl -sSL https://linuxmirrors.cn/docker.sh) --only-registry

##file

filedialog 是其他应用需要选择文件时的弹窗

##boot

##display manager

lightdm 有一堆莫名其妙的问题

gtk display还不知道怎么搞

latex基本概念

wyz2016zxc@outlook.com(Hiraeth) — Mon, 25 Aug 2025 00:00:00 +0000

#latex概览

##tex 和 latex

###1. TeX：底层排版引擎

作者：Donald Knuth（高德纳）开发，1978 年发布。
定位：
- 是一个底层的排版编程语言，提供精确的排版控制（如盒模型、断行算法、数学公式布局等）。
- 语法类似编程（需手动处理格式细节），适合专业人士或极客。
特点：
- 直接操作命令（如 \hbox, \vskip）。
- 默认生成 .dvi 文件（需转换为 PDF/PS）。
- 无预定义的高层结构（如章节、目录需手动实现）。

示例（纯 TeX 代码）：

一些nvim的配置和使用技巧

wyz2016zxc@outlook.com(Hiraeth) — Wed, 06 Aug 2025 00:00:00 +0000

#一些nvim的配置和使用技巧

##cmd

Lua 输出：

nvim

:lua =vim.opt.runtimepath:get()

:setl ma! ma? 可以切换一个buffer的只读状态。注意其他编辑器的只读一般是“你可以修改但不能保存“，这个是你根本不能修改，比如说根本就不能进入插入模式。可以设一个顺手的keymap，比如说我是nnoremap ;m :setl ma! ma? 。

timewarrior

wyz2016zxc@outlook.com(Hiraeth) — Wed, 18 Jun 2025 00:00:00 +0000

#timewarrior

##help

A time tracking tool used to measure the duration of activities. .

TEXT


  Start tracking an activity:

      timew start

  Tag the current activity:

      timew tag activity_tag

  Start tracking and tag a new activity:

      timew start activity_tag

  Stop the current activity:

      timew stop

  Track an activity in the past:

      timew track start_time - end_time activity_tag

  View tracked items of the day:

      timew summary

  View report for the last day, week, current month, etc.:

      timew summary :today|yesterday|week|lastweek|month|lastmonth|year|lastyear

TEXT

Usage: timew [--version]
       timew annotate @<id> [@<id> ...] <annotation>
       timew cancel
       timew config [<name> [<value> | '']]
       timew continue [@<id>] [<date>|<interval>]
       timew day [<interval>] [<tag> ...]
       timew delete @<id> [@<id> ...]
       timew diagnostics
       timew export [<interval>] [<tag> ...]
       timew extensions
       timew gaps [<interval>] [<tag> ...]
       timew get <DOM> [<DOM> ...]
       timew help [<command> | dates | dom | durations | hints | ranges]
       timew join @<id> @<id>
       timew lengthen @<id> [@<id> ...] <duration>
       timew modify (start|end) @<id> <date>
       timew modify range @<id> <interval>
       timew month [<interval>] [<tag> ...]
       timew move @<id> <date>
       timew [report] <report> [<interval>] [<tag> ...]
       timew retag @<id> [@<id> ...] <tag> [<tag> ...]
       timew shorten @<id> [@<id> ...] <duration>
       timew show
       timew split @<id> [@<id> ...]
       timew start [<date>] [<tag> ...]
       timew stop [<tag> ...]
       timew summary [<interval>] [<tag> ...]
       timew tag @<id> [@<id> ...] <tag> [<tag> ...]
       timew tags [<interval>] [<tag> ...]
       timew track <interval> [<tag> ...]
       timew undo
       timew untag @<id> [@<id> ...] <tag> [<tag> ...]
       timew week [<interval>] [<tag> ...]

Additional help:
       timew help <command>
       timew help dates
       timew help dom
       timew help durations
       timew help hints
       timew help ranges

Interval:
       [from] <date>
       [from] <date> to/- <date>
       [from] <date> for <duration>
       <duration> before/after <date>
       <duration> ago
       [for] <duration>

Tag:
       Word
       'Single Quoted Words'
       "Double Quoted Words"
       Escaped\ Spaces

Configuration overrides:
       rc.<name>=<value>

##timew-dom - Timewarrior DOM

Supported DOM references are:

taskwarrior

wyz2016zxc@outlook.com(Hiraeth) — Tue, 17 Jun 2025 00:00:00 +0000

#taskwarrior

Command-line to-do list manager. .

##overview

Taskwarrior has a flexible command line syntax, but it may not be clear at first what the underlying structure means. Here is the general form of the syntax:

There are four parts to the syntax (filter, command, modifications, and miscellaneous), and each part is optional.

tldr

  Add a new task which is due tomorrow:
      task add description due:tomorrow

  Update a task's priority:

      task task_id modify priority:H|M|L

  Complete a task:

      task task_id done

  Delete a task:

      task task_id delete

  List all open tasks:

      task list

  List open tasks due before the end of the week:

      task list due.before:eow

  Show a graphical burndown chart, by day:

      task burndown.daily

  List all reports:

      task reports

man:

ffmpeg

wyz2016zxc@outlook.com(Hiraeth) — Tue, 17 Jun 2025 00:00:00 +0000

#ffmpeg

tldr

  Video conversion tool.
  More information: <https://ffmpeg.org>.

  Extract the sound from a video and save it as MP3:

      ffmpeg -i path/to/video.mp4 -vn path/to/sound.mp3

  Transcode a FLAC file to Red Book CD format (44100kHz, 16bit):

      ffmpeg -i path/to/input_audio.flac -ar 44100 -sample_fmt s16 path/to/output_audio.wav

  Save a video as GIF, scaling the height to 1000px and setting framerate to 15:

      ffmpeg -i path/to/video.mp4 [-vf|-filter:v] 'scale=-1:1000' -r 15 path/to/output.gif

  Combine numbered images (`frame_1.jpg`, `frame_2.jpg`, etc) into a video or GIF:

      ffmpeg -i path/to/frame_%d.jpg -f image2 video.mpg|video.gif

  Trim a video from a given start time mm:ss to an end time mm2:ss2 (omit the -to flag to trim till the end):

      ffmpeg -i path/to/input_video.mp4 -ss mm:ss -to mm2:ss2 [-c|-codec] copy path/to/output_video.mp4

  Convert AVI video to MP4. AAC Audio @ 128kbit, h264 Video @ CRF 23:

      ffmpeg -i path/to/input_video.avi [-c|-codec]:a aac -b:a 128k [-c|-codec]:v libx264 -crf 23 path/to/output_video.mp4

  Remux MKV video to MP4 without re-encoding audio or video streams:

      ffmpeg -i path/to/input_video.mkv [-c|-codec] copy path/to/output_video.mp4

  Convert MP4 video to VP9 codec. For the best quality, use a CRF value (recommended range 15-35) and -b:v MUST be 0:

      ffmpeg -i path/to/input_video.mp4 [-c|-codec]:v libvpx-vp9 -crf 30 -b:v 0 [-c|-codec]:a libopus -vbr on -threads number_of_threads path/to/output_video.webm

pake打包web应用

wyz2016zxc@outlook.com(Hiraeth) — Sun, 08 Jun 2025 00:00:00 +0000

#pake打包web应用

可以将web转化为桌面应用，比electron更轻量。

##安装pake

用户级安装：

TEXT

npm -g install pake-cli

需要rust等工具链

##打包web应用

例如

TEXT

pake chat.deepseek.com --name deepseek --width 1080 --height 1920 --show-system-tray --icon 512x512-RGBA.png

要注意的是分辨率设置，以及icon格式为512x512的png，似乎必须是RGBA

会得到deepseek.deb，内部结构为

pake打包web应用

wyz2016zxc@outlook.com(Hiraeth) — Sun, 08 Jun 2025 00:00:00 +0000

#pake打包web应用

可以将web转化为桌面应用，比electron更轻量。

##安装pake

用户级安装：

TEXT

npm -g install pake-cli

需要rust等工具链

##打包web应用

例如

TEXT

pake chat.deepseek.com --name deepseek --width 1080 --height 1920 --show-system-tray --icon 512x512-RGBA.png

要注意的是分辨率设置，以及icon格式为512x512的png，似乎必须是RGBA

会得到deepseek.deb，内部结构为

Archlinux 上的包管理

wyz2016zxc@outlook.com(Hiraeth) — Sun, 08 Jun 2025 00:00:00 +0000

pacman的一些使用技巧

grep

wyz2016zxc@outlook.com(Hiraeth) — Mon, 05 May 2025 00:00:00 +0000

##grep

ref:

##Count Occurrence: `-c`

TEXT

$ cat example.txt | grep -c good
2

##Get Context: `-C`

Set --context=0 to print that line alone

TEXT

$ cat example.txt | grep --context=0 "good luck"
good luck

Set --context=1 to print 1 line below and 1 line above

TEXT

$ cat example.txt | grep --context=1 "good luck"
hello world
good luck
good day

or use -C 1

Tools on MEMEX

linux手册

#Linux Handbook

##file

##boot

##display manager

latex基本概念

#latex概览

##tex 和 latex

###1. TeX：底层排版引擎

一些nvim的配置和使用技巧

#一些nvim的配置和使用技巧

##cmd

timewarrior

#timewarrior

##help

##timew-dom - Timewarrior DOM

taskwarrior

#taskwarrior

##overview

ffmpeg

#ffmpeg

pake打包web应用

#pake打包web应用

##安装pake

##打包web应用

pake打包web应用

#pake打包web应用

##安装pake

##打包web应用

Archlinux 上的包管理

grep

##grep

##Count Occurrence: -c

##Get Context: -C

##Count Occurrence: `-c`

##Get Context: `-C`