bash_include: 加入歷史紀錄檔保護與備份功能bash_include-20111128

1 files changed, 76 insertions, 6 deletions

diff --git a/bash_include b/bash_include
index 2a4d476..99936d0 100644
--- a/bash_include
+++ b/bash_include
@@ -1,15 +1,47 @@
+#!/bin/bash
+#
+# --- UTF-8 ---
+#
+# 檔案製作者：lantw44
+# 更新日期：2011/11/28
+#
+
+echo "Running .bash_include"
+
+# Internal Variables
+
+default_tty_setting=`stty -g`
+
 colorprompting='\[\e[1;31m\]\!\[\e[m\] [\[\e[1;33m\]\u\[\e[m\]@\[\e[1;32m\]\h\[\e[m\] \[\e[1;36m\]\w\[\e[m\]]\$ '
 nocolorprompting='\! [\u@\h \w]\$ '
 
+historycountfile="$HOME/.bash_history.count"
+historybackupfile="$HOME/.bash_history.bak"
 bgrunfiledir="$HOME/tmp/bgrun"
 
-HISTSIZE=100000
-HISTFILESIZE=100000
+HISTSIZE=1000000
+HISTFILESIZE=1000000
+HISTCONTROL=ignoredups:ignorespace
+
+
+
+
+# Environmental Variables
+
+export EDITOR=vim
+export FCEDIT=vim
+export PAGER=less
+
+
+
+
+# Aliases
 
 alias startcolor='PS1=$colorprompting'
 alias stopcolor='PS1=$nocolorprompting'
 
 alias ll='ls -l'
+alias grep='grep --color=always'
 alias rm='rm -i'
 alias cp='cp -pi'
 alias mv='mv -i'
@@ -22,13 +54,13 @@ alias big5='LANG=zh_TW.Big5;LC_ALL=zh_TW.Big5'
 alias zhtw='LANG=zh_TW.UTF-8;LC_ALL=zh_TW.UTF-8'
 alias utf8='LANG=zh_TW.UTF-8;LC_ALL=zh_TW.UTF-8'
 
-default_tty_setting=`stty -g`
 alias savetty='default_tty_setting=`stty -g`'
 alias resetty='stty $default_tty_setting'
 
-alias sg='sudo -g'
 
-# Function
+
+
+# Functions
 
 function compile_all ()
 {
@@ -103,6 +135,8 @@ function mkscreenacl ()
 	done
 }
 
+########## Background ##########
+
 function bgrun ()
 {
 	[ "$#" = "0" ] && return 1
@@ -138,6 +172,8 @@ function bgcount ()
 	find "$bgrunfiledir" -maxdepth 1 -mindepth 1 | cut -d - -f 2,3 | wc | awk '{print $2}'
 }
 
+########## Background ##########
+
 function check_dmesg ()
 {
 	[ "$#" = "0" ] && return 1
@@ -153,9 +189,36 @@ function check_dmesg ()
 	done 
 }
 
+function prehistory_backup ()
+{
+	echo "Running prehistory_backup"
+	currentcount=`wc "$HISTFILE" | awk '{print $1}'`
+	[ '!' -f "$historycountfile" ] && touch "$historycountfile"
+	declare -i previoushistorycount
+	previoushistorycount=`cat "$historycountfile"`
+	if [ "$currentcount" -lt "$previoushistorycount" ]
+	then
+		printf "\e[1;31mWarning\e[m: Your $HISTFILE may be MODIFIED BY OTHER PROGRAMS!\n"
+		printf "Note: \e[1;33m$currentcount\e[m < $previoushistorycount\n"
+		echo "Your $historycountfile and $historybackupfile will not be overwritten until this problem is fixed."
+		echo " 1. Check your $HISTFILE."
+		echo " 2. Edit your $HISTFILE manually if some unexpected changes are found." 
+		echo "    (You may need $historybackupfile to do it) "
+		echo " 3. Remove the file $historycountfile."
+		echo " 4. Run the command \`prehistory_backup' again."
+		return 1
+	fi
+	echo "$currentcount" > "$historycountfile"
+	cp -f "$HISTFILE" "$historybackupfile"
+}
+
+
+
+
 # Starting doing something
 
 startcolor
+prehistory_backup
 
 umask 0022
 
@@ -167,5 +230,12 @@ then
 fi
 
 shopt -s histappend
+shopt -s checkwinsize
+shopt -s checkjobs
+shopt -s checkhash
+shopt -s cmdhist
+shopt -s mailwarn
+
+echo "Done"
 
-# ~/check_dmesg.sh 5 &
+# check_dmesg.sh 5 &