Jianqing's Blog

Tailscale is one powerful VPN mesh solution, it’s very easy to build your internal virtual network without any complicate config or setup.
I just learn it today, and just follow the official website, to setup for my NAS/Android/Linux Server.

https://tailscale.com/download

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Android Build Performance Tuning with gradle-profiler

If your project have more and more modules and source code, the build will be the nightmare, it will take more than 10 mins to build, for release build, it will take even more time, so we can use the …

DigitalOcean nameserver doesn’t work

cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
# 127.0.0.53 is the systemd-resolved stub resolver.
# run "systemd-resolve --status" to see details

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Issues on M1 Max MacBook Pro

Install Rosetta

This tool will help to run the Intel based Application on M1, and help to do some transformation.

/usr/sbin/softwareupdate --install-rosetta --agree-to-license

Reference

https://support.apple.com/en-us/HT211861
https://en.wikipedia.org/wiki/Rosetta_(software)
https://machow2.com/rosetta-mac/

VMware Fusion for M1

VMware has the preview version

https://customerconnect.vmware.com/downloads/get-download?downloadGroup=FUS-PUBTP-22H2
https://communities.vmware.com/t5/Fusion-Tech-Preview-22H2/ct-p/3022

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Install Linux on MacBook Pro 2011

Can’t create symlink on fat32

Failed to create symlink to vmlinuz-5.4.0-42-generic: Operation not permitted at /usr/bin/linux-update-symlinks line 64

Disable do_symlinks in /etc/kernel-img.conf

cat /etc/kernel-img.conf 
# Kernel Image management overrides
# See kernel-img.conf(5) for details
do_symlinks = no
do_bootloader = no

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Install Mac OS X On legacy MacBook Pro 2011

After I click the “Upgrade” in the old MacBook Pro 2011, High Sierra, after upgrade for a while, then I saw the blue screen, waiting for a long time, it’s still show the blue screen.

Try force reboot, with “Option” …

Build the fancy iTerm2

Install iTerm2

Before to build the fancy Terminal, it need to install the iTerm first.

https://iterm2.com/index.html

The config file will be ~/.zshrc, so for the themes and plugins, need to update this config file accordingly.

Install oh my zsh

https://github.com/ohmyzsh/ohmyzsh

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GPG

Install GPG

 brew install --cask gpg-suite

Generate key

gpg --full-gen-key
gpg (GnuPG/MacGPG2) 2.2.34; Copyright (C) 2022 g10 Code GmbH
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by

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Time Machine备份

知道苹果有这个东西，但一直没用过。最近要换新电脑，想到了Time Machine，想着应该能够无缝迁移吧。

在NAS上开了一个共享空间，打开了afp设置，同一个网络下，自动就搜到了，然后就开始了漫长的备份过程。，

发现了一些问题，体验并不那么好

第一是慢，是真的慢，备份了好几次都没有一次成功
因为上班有时要连VPN，有时要切有线/无线，断了之后，又重新开始计算，体验太糟糕
一次到了98%, 时间显示7分钟，但是等了好长时间还是显示7分钟，时间估算太差
每次断了，重新计算都需要等很的时间，进度也是莫名其妙
空间已经占了1T+，但依旧还没有备份完成

网上搜到几个密令

 1. sudo sysctl debug.lowpri_throttle_enabled=0
 2. sudo fs_usage backupd

[1]说是可以解除CPU/IO限制，可以全速备份

[2]可以看到当前的备份状态

如果需要恢复限制，只需要把0->1

 sudo sysctl debug.lowpri_throttle_enabled=1

早点没有看到这个命令，要不可以省很多时间吧。

当然除了用Time Machine备份，我也使用了传统的备份方式

1. 单独压缩需要备份的目录
2. NFS/SMB挂载远程目录
3. cp file.zip /remote/path

实际使用发现

启用压缩能够节省很多时间，可能是小文件比较多，压缩需要一点时间，但cp速度可以快太多，比直接cp快很多
使用Mac Find

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