几经修改，最后得到是代码是下面几行。算法不变：先并行，再行分，使用贪婪匹配 x.*y

#!/bin/bash
for i in text*.txt
do
cat $i | tr '\n' '\034' | grep -oP 'x.*y' | sed -e 's/^x//;s/y$//' | tr '\034' '\n' | tee out-$i
done
exit 0

然后，就会显示当前播放曲目在标题了。
就不上图了。麻烦。

#!/bin/bash
######  include functions
######  Getstatus() GetInfo()  ShowLyric() Download() Wait()

# modified from mpdlyric by wiewi,lwldcr@gmail.com
# Show lyric when playing music with deadbeef
# 2011/07/17
# contributor wiewi,lwldcr@gmail.com
# 2011/08/06
# modified by Danny Chow, xizhengbing \A\T gmail.com
# Download function!!
# Finished on July 20,Wednesday
# Last modifed August 7,Sunday

Getstatus(){
before=$(deadbeef --nowplaying  %e 2>/dev/null)
after=$(sleep 1;deadbeef --nowplaying  %e 2>/dev/null)
[ $before != $after ] && STATUS="playing"
echo $STATUS
}

GetInfo(){
# Song info
SONG=$(deadbeef --nowplaying %t 2>/dev/null)
ARTIST=$(deadbeef --nowplaying %a 2>/dev/null)
NAME=$SONG
# LRC file
FILE=$LYRIC/`echo $NAME | tr -d ' '`.lrc
}

Download(){
    # 从gougou搜索歌词文件并下载
    #gougou will lead to the site used below

    GetInfo;

    PERIOD=''
    [ -f "$SEARCH" ] && rm -f $SEARCH

    # “歌曲名 歌手” 搜索  管道写法参考lrcdis脚本
    wget -c -T 10 "http://www.lrc123.com/?keyword=$NAME $ARTIST&" -O $SEARCH > /dev/null 2>&1 |  iconv -f GBK

    URL=`cat $SEARCH | grep -B1 '下载' | grep color | sed -n '1p'| sed 's/<[^>]*>//g' | tr -d ' '|sed 's/\\r//'`

    # 第一种方式搜索不到，使用“歌曲名” 搜索
    if [ -z "$URL" ];then
        wget -c -T 10 "http://www.lrc123.com/?keyword=$NAME&" -O $SEARCH > /dev/null 2>&1 | iconv -f GBK
    fi
    URL=`cat $SEARCH | grep -B1 '下载' | grep color | sed -n '1p'| sed 's/<[^>]*>//g' | tr -d ' '|sed 's/\\r//'`

    if [ -z "$URL" ];then
    # 两种方式都搜索不到
        echo "LRC not found!" # &&  exit 1
        GetInfo;
        echo -ne "\033]0;$SONG-$ARTIST\007"
        SONG_PREV=$(deadbeef --nowplaying %t 2>/dev/null)
        Wait;

    else
    # 有搜索结果，那么下载歌词文件
        wget -c -T 10 $URL -O "$FILE" > /dev/null 2>&1| iconv -f GBK
    fi

}

Wait(){
    # 对于下载不到歌词的曲目，每隔1秒重新读取播放器信息，一旦切换到下首，则重新尝试Download歌词
while :
do
   sleep 1
   GetInfo
   if [ "$SONG_PREV" != "$SONG" ];then
       SONG_PREV=$SONG
       [ -f "$FILE" ] || Download;
       ShowLyric;
   fi
done
}
ShowLyric(){
#       [ -f "$FILE" ] || Download;
       #eval "$CMD" "\n$NAME - $ARTIST\n"
       GetInfo;
       echo -ne "\033]0;$SONG-$ARTIST\007"
       echo -e "\n$NAME - $ARTIST\n"
       notify-send "$NAME - $ARTIST"
       while :
       do
       if [ ! "`file $FILE | grep -i utf-8`" ];then
            iconv -f GBK -t UTF-8 $FILE -o $FILE
       fi
       TIME=$(deadbeef --nowplaying %e 2>/dev/null)
       TEXT=$(cat "$FILE" | grep $TIME | sed 's/\[[^]]*]//g')
       CURRENT=$(deadbeef --nowplaying %t 2>/dev/null)

       if [ -z "$PREV" -o "$CURRENT" = "$PREV" ];then
         PREV=$CURRENT

         # 换到下一句歌词
         if [ -n "$TEXT" -a "$TEXT" != "$TEXT_PREV" ];then
# Notify 方式有问题，歌词更新太慢，即使指定了timeout问题依旧
#       notify-send -t $TIMEOUT -- "$TEXT"
#              echo $TEXT
              sleep 0.8
              eval "$CMD"
              TEXT_PREV="$TEXT"
         fi
       # 歌曲切换
       else
              PREV=''
              GetInfo
             # eval "$CMD" "\n$NAME - $ARTIST\n"
              echo -ne "\033]0;$SONG-$ARTIST\007"
              echo -e "\n$NAME - $ARTIST\n"
              notify-send "$NAME - $ARTIST"

              [ -f "$FILE" ] || Download;
              continue
       fi
         sleep 0.3
       done
}
# Lyric dir
 [ -d $HOME/.lyrics ] || mkdir $HOME/.lyrics -v

LYRIC=$HOME/.lyrics

# Temp files
[ -d $HOME/tmp ] || mkdir $HOME/tmp -v
SEARCH=$HOME/tmp/search

# Notify timeout
TIMEOUT=1000
case $1 in
    -n) CMD='notify-send -t $TIMEOUT --  $TEXT'
        ;;
    *)  CMD='echo $TEXT'
        ;;
esac

Getstatus
while :
do
case $STATUS in
    playing) GetInfo
             [ -f "$FILE" ] || Download;
             ShowLyric;;
    *) echo "Deadbeef is not running!" && exit 1;;
esac
done

参考资料 如何變更 xterm 的主題

I haven’t looked at DeaDBeeF’s command line options, but is there one that will output its status? Then you’d just need a script with an if conditional:

!#/bin/bash
if `deadbeef –state` = “PLAY” #replace this with whatever code is necessary to find out if DeaDBeeF is playing
deadbeef –pause
else
deadbeef –play
endif

…and that’s your play/pause toggle.

我自己想办法解决了。

Chow Daniel
我真是笨啊。檢查播放狀態不一定要直接從程序給出的命令行中得出​。如果1秒前的播放位置和現在不同，那麽它就是“正在播放”
about an hour ago ·

主体部分
文件名 lyric4deadbeef.sh

#!/bin/bash
# modified from mpdlyric by wiewi,lwldcr@gmail.com
# Show lyric when playing music with deadbeef
# 2011/07/17
# contributor wiewi,lwldcr@gmail.com
# 2011/08/06
# modified by Danny Chow, xizhengbing \A\Tgmail.com
# Download function!!
# Finished on July 20,Wednesday
# Last modifed August 6,Saturday
. functions.main
# Lyric dir
 [ -d $HOME/.lyrics ] || mkdir $HOME/.lyrics -v

LYRIC=$HOME/.lyrics

# Temp files
[ -d $HOME/tmp ] || mkdir $HOME/tmp -v
SEARCH=$HOME/tmp/search

# Notify timeout
TIMEOUT=1000
case $1 in
    -n) CMD='notify-send -t $TIMEOUT --  $TEXT'
        ;;
    *)  CMD='echo $TEXT'
        ;;
esac

Getstatus
while :
do
case $STATUS in
    playing) GetInfo
             [ -f "$FILE" ] || Download;
             ShowLyric;;
    *) echo "Deadbeef is not running!" && exit 1;;
esac
done

函数部分
文件名 functions.main

#!/bin/bash
# functions for lyric4deadbeef

######	include functions										######
######	Getstatus() GetInfo()  ShowLyric() Download() Wait()	###### 

# modified from mpdlyric by wiewi,lwldcr@gmail.com
# Show lyric when playing music with deadbeef
# 2011/07/17
# contributor wiewi,lwldcr@gmail.com
# 2011/08/06
# modified by Danny Chow, xizhengbing \A\T gmail.com
# Download function!!
# Finished on July 20,Wednesday
# Last modifed August 6,Saturday
Getstatus(){
before=$(deadbeef --nowplaying  %e 2>/dev/null)
after=$(sleep 1;deadbeef --nowplaying  %e 2>/dev/null)
[ $before != $after ] && STATUS="playing"
echo $STATUS
}
GetInfo(){

# Song info
SONG=$(deadbeef --nowplaying %t 2>/dev/null)
ARTIST=$(deadbeef --nowplaying %a 2>/dev/null)
NAME=$SONG

# LRC file
FILE=$LYRIC/`echo $NAME | tr -d ' '`.lrc
}

Download(){
    # 从gougou搜索歌词文件并下载
    #gougou will lead to the site used below

    GetInfo;

    PERIOD=''
    [ -f "$SEARCH" ] && rm -f $SEARCH

    # “歌曲名 歌手” 搜索  管道写法参考lrcdis脚本
    wget -c -T 10 "http://www.lrc123.com/?keyword=$NAME $ARTIST&" -O $SEARCH > /dev/null 2>&1 |  iconv -f GBK

    URL=`cat $SEARCH | grep -B1 '下载' | grep color | sed -n '1p'| sed 's/<[^>]*>//g' | tr -d ' '|sed 's/\\r//'`

    # 第一种方式搜索不到，使用“歌曲名” 搜索
    if [ -z "$URL" ];then
        wget -c -T 10 "http://www.lrc123.com/?keyword=$NAME&" -O $SEARCH > /dev/null 2>&1 | iconv -f GBK
    fi
    URL=`cat $SEARCH | grep -B1 '下载' | grep color | sed -n '1p'| sed 's/<[^>]*>//g' | tr -d ' '|sed 's/\\r//'`

    if [ -z "$URL" ];then
    # 两种方式都搜索不到
        echo "LRC not found!" # &&  exit 1
        SONG_PREV=$(deadbeef --nowplaying %t 2>/dev/null)
        Wait;

    else
    # 有搜索结果，那么下载歌词文件
        wget -c -T 10 $URL -O "$FILE" > /dev/null 2>&1| iconv -f GBK
    fi

}

Wait(){
    # 对于下载不到歌词的曲目，每隔1秒重新读取播放器信息，一旦切换到下首，则重新尝试Download歌词
while :
do
   sleep 1
   GetInfo
   if [ "$SONG_PREV" != "$SONG" ];then
       SONG_PREV=$SONG
       [ -f "$FILE" ] || Download;
       ShowLyric;
   fi
done
}
ShowLyric(){
#       [ -f "$FILE" ] || Download;
       #eval "$CMD" "\n$NAME - $ARTIST\n"
       echo -e "\n$NAME - $ARTIST\n"
       notify-send "$NAME - $ARTIST"
       while :
       do
       if [ ! "`file $FILE | grep -i utf-8`" ];then
            iconv -f GBK -t UTF-8 $FILE -o $FILE
       fi
       TIME=$(deadbeef --nowplaying %e 2>/dev/null)
       TEXT=$(cat "$FILE" | grep $TIME | sed 's/\[[^]]*]//g')
       CURRENT=$(deadbeef --nowplaying %t 2>/dev/null)

       if [ -z "$PREV" -o "$CURRENT" = "$PREV" ];then
         PREV=$CURRENT

         # 换到下一句歌词
         if [ -n "$TEXT" -a "$TEXT" != "$TEXT_PREV" ];then
# Notify 方式有问题，歌词更新太慢，即使指定了timeout问题依旧
#       notify-send -t $TIMEOUT -- "$TEXT"
#              echo $TEXT
              sleep 0.8
              eval "$CMD"
              TEXT_PREV="$TEXT"
         fi
       # 歌曲切换
       else
              PREV=''
              GetInfo
             # eval "$CMD" "\n$NAME - $ARTIST\n"
              echo -e "\n$NAME - $ARTIST\n"
              notify-send "$NAME - $ARTIST"

              [ -f "$FILE" ] || Download;
              continue
       fi
         sleep 0.3
       done
}

时间紧，暂时到此。水平有限，可能修改得不够好。

使用办法
把前面的代码保存为 lyric4deadbeef.sh 或者你喜欢的名字
后面的代码保存为 functions.main (和 lyric4deadbeef.sh同一个目录下)
然后

chmod +x  lyric4deadbeef.sh  functions.main

当然，不想分开也是可以的。把函数部分并在lyric4deadbeef.sh中的 #!/bin/bash 后面，去掉行 . functions.main

export SDL_AUDIODRIVER=dsp

设定使用/dev/dsp，结果找不到设备，搜索。找到解决之道。要添加模块snd-pcm-oss， 默认没有添加
在/etc/rc.conf载入模块设定里添加snd-pcm-oss，修改后的内容为

MODULES=(fuse snd-pcm-oss !usblp)

立即生效的做法

modprobe snd-pcm-oss

参考资料: http://wiki.debian.org/SoundFAQ

Error: audio: /dev/dsp: No such file or directory

If the audio mixer application is reporting that no mixer is available, or gives an error:

audio: /dev/dsp: No such file or directory

It is necessary to load the snd-pcm-oss module.

用vi命令替换1到10行，或者替换当前行到某行，这个都会，但是如果我想要替换1-10行，18，20行，这样怎么写？

下面是实现代码

for i in  `grep -n 'foo' foo.ps | awk -F ":" '{print $1}'`;
do echo $i|sed -i "${i}s/^/%/" foo.ps ;done

解释一下

• for i in ;do ;done 经典的for 循环
• grep -n ‘foo’ foo.ps | awk -F “:” ‘{print $1}’ 获取关键词所在行号
• echo $i|sed -i “${i}s/^/%/” 传递shell变量给sed, 并替换指定行$i 的关键词^(行首)为%(注释)

代码虽短，但并不意味着写出这段代码容易和省时间。
目前只知道种方法，至于其它方法，God knows.

下载了pdf文档，可惜有水印影响阅读，去之。手动去掉的话，工作量那是相当的大。

重复的事情交给程序做。程序只会做重复的事情。

参考了这篇文章的想法后，开始实施。下面的是那个想法的实现。

所用工具
• wine
• Foxit PDF Editor
• xdotool linux下的按键精灵

• 首先安装xdotool

#pacman -Sy xdotool

• 其次获取光标要到达的所有位置

移动光标到目标位置，然后执行下面命令，获得当前光标所在位置坐标

xdotool getmouselocation 2>/dev/null |awk -F ":" '{print $2,$3}' |awk '{print $1,$3}'

因为水印的位置不同，并且窗口位置也不同。所以，光标的位置不大相同。不过，也可以使用相对坐标（好复杂）。

某个pdf文档去水印的光标操作代码

#!/bin/bash
# remove mark
# pages
var=247
while [ $var -gt 0 ];do
## select
xdotool mousemove 1316 141
xdotool keydown Prior
xdotool mousemove 1416 243
xdotool keyup Prior
xdotool mousemove 1362 184
xdotool sleep 1
xdotool click 1
## del
xdotool mousemove 1057  120
xdotool sleep 1
xdotool click 1
## next page
xdotool mousemove 1268  855
xdotool click 1
var=`expr $var - 1`
done
exit 0

有一个问题，为什么脚本运行结束后，会有字符输出的？ 如 ^[[5~%
去水印算是逆向操作。当水印分布不规则时，那是比较麻烦的。
参考资料:

• 网页转PDF及PDF去水印 - [技术杂烩]
• http://liquid-galaxy.googlecode.com/svn-history/r282/trunk/gnu_linux/home/lg/bin/streetview

if ;then
elif ;then
else
fi

#!/bin/bash
killall conky
sleep 10
GOT=$(grep 'wallpaper=' ~/.kde4/share/config/plasma-desktop-appletsrc | tail -n 1 |awk -F '=' '{print $2}')
BG1=${GOT}contents/images/1440x900.jpg
BG2=${GOT}contents/images/1920x1200.jpg
echo "$BG1\n$BG2"
if [ -f $BG1 ] ; then
	feh --bg-scale $BG1
elif [ -f $BG2 ] ; then
	feh --bg-scale $BG2
fi
conky
exit 0

效果图

参考资料
http://krisko210.blogspot.com/2011/05/kde-and-transparent-conky.html