change === and >>> to ::*** and ***::

nixhome-config.sh

@@ -1,22 +1,19 @@
 #!/bin/bash
 
-if [ -d "$1" ]
-then
+if [ -d "$1" ]; then
   NIXHOME=$1
-else if [ -d "`pwd`/nixhome" ]
-then
-  NIXHOME=`pwd`/nixhome
+elif [ -d "$(pwd)/nixhome" ]; then
+  NIXHOME=$(pwd)/nixhome
 else
   echo ""
-  echo "#<<< Enter [root path] or [leave blank] for default to [[`pwd`]]"
-  read -p "#>>> " NIXHOME
-  if [ ! "$NIXHOME" ]
-  then
-    NIXHOME=`pwd`
+  echo "::*** Enter [root path] or [leave blank] for default to [[$(pwd)]]"
+  read -p "***:: " NIXHOME
+  if [ -z "$NIXHOME" ]; then
+    NIXHOME=$(pwd)
   fi
 fi
-if [ ! -e "$NIXHOME/.bashrc" ]
-then 
+
+if [ ! -e "$NIXHOME/.bashrc" ]; then 
   echo "××× [[$NIXHOME/.bashrc]] not exist! Exit now. ***"
   exit
 else
@@ -25,60 +22,48 @@ fi
 echo ""
 
 # $2 应当为用户名
-if [ "$2" == 'root' ]
-then
+if [ "$2" == 'root' ]; then
   HomePath=/root
   TheUser=root
-elif [ "$2" ]
-then
+elif [ "$2" ]; then
   HomePath=/home/$2
   TheUser=$2
 else
   # 可能是 root 或其他
   HomePath=~
-  TheUser=`whoami`
+  TheUser=$(whoami)
 fi
 
-if [ -d "$HomePath" ]
-then
+if [ -d "$HomePath" ]; then
 
-  pushd $HomePath
+  pushd "$HomePath"
   
   homescriptlist=".emacs .emacs.lisp .bashrc .bash_profile .gitignore.global.txt"
   echo
-  echo "#<<< Copy or link scripts? [l] to link, [c] to copy, [g] to git import, [anything else] to omit:"
-  read -p "#>>> " CopyOrLinkScripts
-  if [ "$CopyOrLinkScripts" == 'l' ]
-  then
-    for homescript in $homescriptlist
-    do
-      if [ -e "$homescript" ] || [ -L "$homescript" ]
-      then
-        mv $homescript $homescript.backup-$(date -u +%Y%m%dT%H%M%Sutc)
+  echo "::*** Copy or link scripts? [l] to link, [c] to copy, [g] to git import, [anything else] to omit:"
+  read -p "***:: " CopyOrLinkScripts
+  if [ "$CopyOrLinkScripts" == 'l' ]; then
+    for homescript in $homescriptlist; do
+      if [ -e "$homescript" ] || [ -L "$homescript" ]; then
+        mv "$homescript" "$homescript.backup-$(date -u +%Y%m%dT%H%M%Sutc)"
       fi
       echo "--- Linking [[$NIXHOME/$homescript]] to [[$HomePath/$homescript]] ..."
-      ln -s $NIXHOME/$homescript ./
+      ln -s "$NIXHOME/$homescript" ./
     done
-  elif [ "$CopyOrLinkScripts" == 'c' ]
-  then
-    for homescript in $homescriptlist
-    do
-      if [ -e "$homescript" ] || [ -L "$homescript" ]
-      then
-        mv $homescript $homescript.backup-$(date -u +%Y%m%dT%H%M%Sutc)
+  elif [ "$CopyOrLinkScripts" == 'c' ]; then
+    for homescript in $homescriptlist; do
+      if [ -e "$homescript" ] || [ -L "$homescript" ]; then
+        mv "$homescript" "$homescript.backup-$(date -u +%Y%m%dT%H%M%Sutc)"
       fi
       echo "--- Copying [[$NIXHOME/$homescript]] to [[$HomePath/$homescript]] ..."
-      cp -r $NIXHOME/$homescript ./
+      cp -r "$NIXHOME/$homescript" ./
     done
-  elif [ "$CopyOrLinkScripts" == 'g' ]
-  then
-    for homescript in $homescriptlist
-    do
-      if [ -e "$homescript" ] || [ -L "$homescript" ]
-      then
-        mv $homescript $homescript.backup-$(date -u +%Y%m%dT%H%M%Sutc)
+  elif [ "$CopyOrLinkScripts" == 'g' ]; then
+    for homescript in $homescriptlist; do
+      if [ -e "$homescript" ] || [ -L "$homescript" ]; then
+        mv "$homescript" "$homescript.backup-$(date -u +%Y%m%dT%H%M%Sutc)"
       fi
-      curl -sSLO https://git.faronear.org/npm/sysconfig/raw/branch/main/nixhome/$homescript
+      curl -sSLO "https://git.faronear.org/npm/sysconfig/raw/branch/main/nixhome/$homescript"
     done
   else
     echo '--- Home scripts not changed.'
@@ -86,37 +71,31 @@ then
 
   echo
 
-  if [ "$(uname)" == "Darwin" ]
-  then
+  if [ "$(uname)" == "Darwin" ]; then
     echo '--- No need to configure ./ssh/authorized_keys on Mac OS X. Exit now.'
-  elif [ "$TheUser" != 'root' ]  # 仅允许 non-root 用户进行远程密钥登录
-  then
+  elif [ "$TheUser" != 'root' ]; then
 
-    mkdir -p $HomePath/.ssh
-    chmod 700 $HomePath/.ssh
-    if [ "$2" ]
-    then
+    mkdir -p "$HomePath/.ssh"
+    chmod 700 "$HomePath/.ssh"
+    if [ "$2" ]; 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 $HomePath/.ssh
+      chown "$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)
+    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 [[$HomePath/.ssh/authorized_keys]] to config ssh server? [a] for append, [l] for link, [anything else] for omit:"
-    read -p "#>>> " CopyOrLinkOrOmitAuthorizedKeys
+    echo "::*** Append or link or omit [[$HomePath/.ssh/authorized_keys]] to config ssh server? [a] for append, [l] for link, [anything else] for omit:"
+    read -p "***:: " CopyOrLinkOrOmitAuthorizedKeys
 
-    if [ "$CopyOrLinkOrOmitAuthorizedKeys" = 'l' ]
-    then
+    if [ "$CopyOrLinkOrOmitAuthorizedKeys" = 'l' ]; then
       echo "--- Linking [[$NIXHOME/authorized_keys]] to [[$HomePath/.ssh/authorized_keys]] ..."
-      ln -s $NIXHOME/.ssh/authorized_keys $HomePath/.ssh/authorized_keys
-      sudo chmod 644 $HomePath/.ssh/authorized_keys # 确保其他用户能读取 nixhome/.ssh/authorized_keys
-    elif [ "$CopyOrLinkOrOmitAuthorizedKeys" = 'a' ]
-    then
+      ln -s "$NIXHOME/.ssh/authorized_keys" "$HomePath/.ssh/authorized_keys"
+      sudo chmod 644 "$HomePath/.ssh/authorized_keys" # 确保其他用户能读取 nixhome/.ssh/authorized_keys
+    elif [ "$CopyOrLinkOrOmitAuthorizedKeys" = 'a' ]; then
       echo "--- Copying [[$NIXHOME/authorized_keys]] to [[$HomePath/.ssh/authorized_keys]] ..."
-      cat $NIXHOME/.ssh/authorized_keys >> $HomePath/.ssh/authorized_keys
-      chmod 600 $HomePath/.ssh/authorized_keys
+      cat "$NIXHOME/.ssh/authorized_keys" >> "$HomePath/.ssh/authorized_keys"
+      chmod 600 "$HomePath/.ssh/authorized_keys"
     fi
     echo