u

git-config.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 echo "---------------------------------------------"
-echo "User Name (leave blank for no change as $(git config --get user.name)" 
+echo "Set [user name] or leave blank for unchanged \"$(git config --get user.name)\"" 
 read -p "***:: " UserName
 if [ $UserName ]
 then
@@ -10,7 +10,7 @@ then
 fi
 
 echo "---------------------------------------------"
-echo "User Email (leave blank for no change as $(git config --get user.email))" 
+echo "User Email (leave blank for unchanged $(git config --get user.email))" 
 read -p "***:: " UserEmail
 if [ $UserEmail ]
 then
@@ -20,7 +20,7 @@ fi
 
 echo "---------------------------------------------"
 echo "如果 git 远程服务器的 ssl 证书过期，或者使用了自颁发的证书，连接时会出现验证错误 Cannot verify local issuer"
-echo "Verify ssl? (true or false, blank for no change as $(git config --get http.sslVerify))" 
+echo "Verify ssl? (true, false, or leave blank for unchanged $(git config --get http.sslVerify))" 
 read -p "***:: " HttpSslVerify
 if [ $HttpSslVerify ]
 then
@@ -29,7 +29,7 @@ then
 fi
 
 echo "---------------------------------------------"
-echo "Store credential in cache or store? (leave blank for no change as $(git config --get credential.helper))" 
+echo "Store credential in [cache] or [store]? (leave blank for unchanged $(git config --get credential.helper))" 
 read -p "***:: " CredentialHelper
 if [ $CredentialHelper ]
 then
@@ -38,7 +38,7 @@ then
 fi
 
 echo "---------------------------------------------"
-echo "Store pull rebase to true or false? (leave blank for no change as $(git config --get pull.rebase))" 
+echo "Store pull rebase to [true] or [false]? (leave blank for unchanged $(git config --get pull.rebase))" 
 read -p "***:: " PullRebase
 if [ $PullRebase ]
 then
@@ -47,7 +47,7 @@ then
 fi
 
 echo "---------------------------------------------"
-echo "Set [path to global gitignore file] (leave blank for no change as $(git config --get core.excludesfile))"
+echo "Set [path to global gitignore file] or leave blank for unchanged $(git config --get core.excludesfile)"
 read -p "***:: " ExcludesFile
 if [ $ExcludesFile ]
 then
@@ -58,7 +58,7 @@ else
 fi
 
 echo "---------------------------------------------"
-echo "Set default branch since git 2.28 to master or main? (leave blank for no change as $(git config --get init.defaultbranch))"
+echo "Set default branch since git 2.28 to master or main? (leave blank for unchanged $(git config --get init.defaultbranch))"
 read -p "***:: " DefaultBranch
 if [ $DefaultBranch ]
 then
@@ -67,7 +67,7 @@ then
 fi
 
 echo "---------------------------------------------"
-echo "Set postBuffer size? Suggesting 157286400 (leave blank for no change as $(git config --get http.postBuffer))"
+echo "Set postBuffer size? Suggesting 157286400 (leave blank for unchanged $(git config --get http.postBuffer))"
 read -p "***:: " PostBufferSize
 if [ $PostBufferSize ]
 then

mac-create-vdisk.plist

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!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>mac-create-vdisk</string>
+  <key>ProgramArguments</key>
+  <array>
+    <string>/etc/mac-create-vdisk.sh</string>
+  </array>
+  <key>RunAtLoad</key>
+  <true/>
+  <key>KeepAlive</key>
+  <true/>
+</dict>
+</plist>

mac-create-vdisk.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+set -e
+
+DISKNAME=vdisk
+DISKSIZE=33554432 # 磁盘扇区数，每个扇区大小是 512 字节，n*1024*1024*1024/512 = n Gigabytes. Do NOT set the formula to DISKSIZE.
+# 虚拟磁盘并不是一创建就把内存空间划走，而是等到真正写入了虚拟磁盘的时候，才会使用对应的内存空间，所以给虚拟磁盘分配大一点的空间是没有问题的
+
+if [ -d /Volumes/$DISKNAME ]; then
+  echo 'Found /Volumes/$DISKNAME!'
+else
+  DISKID=$(hdid -nomount ram://$DISKSIZE)
+  diskutil apfs create ${DISKID} $DISKNAME
+fi
+
+# copy this script to some public folder, e.g. `sudo cp this-script.sh /etc/`, because in my test, it doesn't work in /Users/...
+# copy the corresponding plist file to /Library/LaunchDaemons/,
+# optionally run `sudo launchctl load /Library/LaunchDaemons/my-launch-file.plist` immediately for test.

nixhome-config.sh

@@ -69,9 +69,6 @@ if [ -d "$HomePath" ]; then
       # 由 root 指定新用户而创建的配置文件的 owner 是 root，而不是新用户，导致新用户无法读取该文件而密钥登录失败，因此要重设 owner。
       chown "$TheUser:$TheUser" "$HomePath/.ssh"
     fi
-    if [ -f "$HomePath/.ssh/authorized_keys" ] || [ -L "$HomePath/.ssh/authorized_keys" ]; then
-      mv "$HomePath/.ssh/authorized_keys" "$HomePath/.ssh/authorized_keys.backup-$(date -u +%Y%m%dT%H%M%Sutc)"
-    fi
 
     echo "::*** Append or link or omit [[$HomePath/.ssh/authorized_keys]] to config ssh server? [a] for append, [l] for link, [anything else] for omit:"
     read -p "***:: " AuthorizedKeys
@@ -84,9 +81,16 @@ if [ -d "$HomePath" ]; then
       echo "--- Copying [[$NIXHOME/authorized_keys]] to [[$HomePath/.ssh/authorized_keys]] ..."
       cat "$NIXHOME/.ssh/authorized_keys" >> "$HomePath/.ssh/authorized_keys"
       chmod 600 "$HomePath/.ssh/authorized_keys"
+    else
+      exit 0
     fi
     echo
 
+    if [ -f "$HomePath/.ssh/authorized_keys" ] || [ -L "$HomePath/.ssh/authorized_keys" ]; then
+      mv "$HomePath/.ssh/authorized_keys" "$HomePath/.ssh/authorized_keys.backup-$(date -u +%Y%m%dT%H%M%Sutc)"
+    fi
+
+
   fi
 
   popd

nixhome/.bashrc

@@ -125,7 +125,7 @@ esac
 # others:
 # \w shows absolute path, \W shows current folder.
 if [ "$color_prompt" = yes ]; then
-    PS1='[\[\033[07;32m\]\t\[\033[00m\]#\[\033[07;35m\]\u\[\033[00m\]@\[\033[07;31m\]\h|$(uname)|$(uname -m)\[\033[00m\]::\[\033[07;34m\]\w\[\033[00m\]] '
+    PS1='[\[\033[07;32m\]\t\[\033[00m\]#\[\033[07;35m\]\u\[\033[00m\]@\[\033[07;31m\]\h=$(uname)=$(uname -m)\[\033[00m\]::\[\033[07;34m\]\w\[\033[00m\]] '
 else
     PS1='[\t#\u@\h($(uname)-$(uname -m)):\w] ' # \w shows absolute path, \W shows current folder.
 fi