WARNING

注意：脚本原文件来源于网络，部分修改只在小范围测试过，请在正式使用前做好备份、测试

目标

编写脚本，将vim，emacs等配置文件放置到内存中，调用速度更快
使用launchctl开机自启动1中的脚本

环境

mac osx 10.14.6
vim8 配置文件为 SpaceVim
emacs 配置文件为 seagle0128

脚本

mount-ram-vim.sh 创建内存镜像挂载点

#!/bin/sh# This program has two feature.
#
# 1. Create a disk image on RAM.
# 2. Mount that disk image.
#
# Usage:
#   $0 <dir> <size>
#
#   size:
#     The `size' is a size of disk image (MB).
#
#   dir:
#     The `dir' is a directory, the dir is used to mount the disk image.
#
# See also:
#   - hdid(8)
#mount_point=${1:-/Users/mac/vim_ram}
size=${2:-128}mkdir -p $mount_point
if [ $? -ne 0 ]; thenecho "The mount point didn't available." >&2exit $?
fisector=$(expr $size \* 1024 \* 1024 / 512)
device_name=$(hdid -nomount "ram://${sector}" | awk '{print $1}')
if [ $? -ne 0 ]; thenecho "Could not create disk image." >&2exit $?
finewfs_hfs -v vim $device_name > /dev/null
if [ $? -ne 0 ]; thenecho "Could not format disk image." >&2exit $?
fimount -o nobrowse,rw -t hfs $device_name $mount_point
# -o nobrowse : do not display mount device on Finder sidebar
if [ $? -ne 0 ]; thenecho "Could not mount disk image." >&2exit $?
fi

unmount-ram-vim.sh 关机/重启时卸载内存镜像

#!/bin/sh# This program has two features.
#
# 1. Unmount a disk image.
# 2. Detach the disk image from RAM.
#
# Usage:
#   $0 <dir>
#
#   dir:
#     The `dir' is a directory, the dir is mounting a disk image.
#
# See also:
#   - hdid(8)
#mount_point=${1:-/Users/mac/vim_ram}
if [ ! -d "${mount_point}" ]; thenecho "The mount point didn't available." >&2exit 1
fi
mount_point=$(cd $mount_point && pwd)device_name=$(df "${mount_point}" 2>/dev/null | tail -1 | grep "${mount_point}" | cut -d' ' -f1)
if [ -z "${device_name}" ]; thenecho "The mount point didn't mount disk image." >&2exit 1
fiumount "${mount_point}"
if [ $? -ne 0 ]; thenecho "Could not unmount." >&2exit $?
fihdiutil detach -quiet $device_name

vim2ram.sh 将spacevim配置文件移入、移出内存镜像

#!/bin/sh
function start()
{backup=/Users/mac/.spacevim-backuplink=/Users/mac/.SpaceVimvolatile=/Users/mac/vim_ram/.SpaceVim-$USERIFS=set -efucd ~/if [ ! -r $volatile ]; thenmkdir -m0700 $volatilefi# link -> volatie does not existif [ "$(readlink $link)" != "$volatile" ]; then# backup project at firstmv $link $backup# create the linkln -s $volatile $linkfiif [ -e $link/.unpacked ]; thenecho "Sync .SpaceVim from memory to backup ..."rsync -avq --delete --exclude .unpacked $link/ $backup/echo "DONE!"elseecho "Sync .SpaceVim from disk to memory ..."rsync -avq $backup/ $link/touch $link/.unpackedecho "DONE!"fi
}function restore()
{echo "Moving .SpaceVim back to disk ..."backup=/Users/mac/.spacevim-backuplink=/Users/mac/.SpaceVimvolatile=/Users/mac/vim_ram/.SpaceVim-$USERcd ~/rm -f $link && mv $backup $link && rm -rf $volatileecho "DONE!"
}if [ -z "$1" ];thenecho "-------------------------------------------------------------"echo "Usage:"echo "  vim2ram start"echo "  vim2ram restore"echo "Default action is 'vim2ram start'. Now excute start..."startecho "-------------------------------------------------------------"exit 1
fiif [ "$1" == "start" ];thenstart
elserestore
fi

launchctl开机服务启动

启动脚本 boot-shutdown.sh

#!/bin/sh
#
# Author: Vincenzo D'Amore v.damore@gmail.com
# 20/11/2014
#function shutdown()
{echo `date` " " `whoami` " Received a signal to shutdown"# INSERT HERE THE COMMAND YOU WANT EXECUTE AT SHUTDOWN# remember Moving .emacs.d from ram back to disk##emacs##sh /Users/mac/emacs-speedup-scripts/emacs2ram.sh restore#echo ".emacd.d restore from ram complete!"#sh /Users/mac/emacs-speedup-scripts/unmount-ram.sh#echo "unmount-ram complete!"##vim#sh /Users/mac/emacs-speedup-scripts/vim2ram.sh restoreecho "SpaceVim restore from ram complete!"sh /Users/mac/emacs-speedup-scripts/unmount-ram-vim.shecho "unmount-ram-vim complete!"exit 0
}function startup()
{echo `date` " " `whoami` " Starting..."# INSERT HERE THE COMMAND YOU WANT EXECUTE AT STARTUP##emacs##sleep 3#sh /Users/mac/emacs-speedup-scripts/mount-ram.sh#echo "mount-ram complete!"#sh /Users/mac/emacs-speedup-scripts/emacs2ram.sh#echo "move .emacs.d to ram complete!"#vim#sleep 3sh /Users/mac/emacs-speedup-scripts/mount-ram-vim.shecho "mount-ram-vim complete!"sh /Users/mac/emacs-speedup-scripts/vim2ram.shecho "move SpaceVim to ram complete!"tail -f /dev/null &wait $!
}trap shutdown SIGTERM
trap shutdown SIGKILLstartup;

launchctl基础概念

macOS开机启动一般使用launchctl加载plist文件

plist文件放置处：

~/Library/LaunchAgents 由用户自己定义的任务项
/Library/LaunchAgents 由管理员为用户定义的任务项
/Library/LaunchDaemons 由管理员定义的守护进程任务项
/System/Library/LaunchAgents 由Mac OS X为用户定义的任务项
/System/Library/LaunchDaemons 由Mac OS X定义的守护进程任务项

/System/Library和/Library和~/Library目录的区别？

/System/Library目录是存放Apple自己开发的软件。
/Library目录是系统管理员存放的第三方软件。
~/Library/是用户自己存放的第三方软件。

LaunchDaemons和LaunchAgents的区别？

LaunchDaemons是用户未登陆前就启动的服务（守护进程）。
LaunchAgents是用户登陆后启动的服务（守护进程）。

launchctl基础命令

本次配置plist文件在 ~/Library/LaunchAgents 目录

launchctl load ~/Library/LaunchAgents/example.plist
# 卸载配置
launchctl unload ~/Library/LaunchAgents/example.plist
# 检查语法是否正确
plutil ~/Library/LaunchAgents/example.plist
# 查看服务运行状态
launchctl list

plist文件：

1.在~/Library/LaunchAgents 创建文件Vim2Ram.plist，内容为：

<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict><key>Label</key><string>boot_vim2ram</string><key>Program</key><string>/Users/mac/macosx-script-boot-shutdown/boot-shutdown.sh</string><key>ProgramArguments</key><array><string>/Users/mac/macosx-script-boot-shutdown/boot-shutdown.sh</string></array><key>RunAtLoad</key><true/><key>WorkingDirectory</key><string>/Users/mac/macosx-script-boot-shutdown/</string><key>StandardOutPath</key><string>/Users/mac/macosx-script-boot-shutdown/boot-shutdown.log</string><key>StandardErrorPath</key><string>/Users/mac/macosx-script-boot-shutdown/boot-shutdown.err</string><key>ExitTimeOut</key><integer>600</integer>
</dict>
</plist>

/Users/mac/macosx-script-boot-shutdown/ 为自定义路径，按需修改
/Users/mac/macosx-script-boot-shutdown/boot-shutdown.err与log为自定义日志文件，可有可无
/Users/mac/macosx-script-boot-shutdown/boot-shutdown.sh 即启动脚本 1

效果

配置好plist之后，启动 launchctl load -w Vim2RAM.plist

查看镜像：

其他

emacs处理逻辑类似，参照vim脚本修改即可
碰到plist报错问题，可使用launchcontrol调试，安装命令为 brew cask install launchcontrol
参考：https://stackoverflow.com/questions/34215527/what-does-launchd-status-78-mean-why-my-user-agent-not-running

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