linux各种技巧

偶然在http://forum.ubuntu.org.cn上看到一个帖子中有一个随机变化的linux技巧表，就将其js脚本搞了出来，代码中写的技巧都挺有用的。

tips = new Array(222);

code = new Array(222);

tips[0] = '查看软件xxx安装内容';

code[0] = 'dpkg -L xxx';

tips[1] = '查找软件库中的软件';

code[1] = 'apt-cache search 正则表达式';

tips[2] = '查找软件库中的软件';

code[2] = 'aptitude search 软件包';

tips[3] = '查找文件属于哪个包';

code[3] = 'dpkg -S filename';

tips[4] = '查找文件属于哪个包';

code[4] = 'apt-file search filename';

tips[5] = '查询软件xxx依赖哪些包';

code[5] = 'apt-cache depends xxx';

tips[6] = '查询软件xxx被哪些包依赖';

code[6] = 'apt-cache rdepends xxx';

tips[7] = '增加一个光盘源';

code[7] = 'sudo apt-cdrom add';

tips[8] = "系统升级";

code[8] = 'sudo apt-get update;sudo apt-get dist-upgrade';

tips[9] = "清除已删除包的残馀配置文件";

code[9] = "dpkg -l |grep ^rc|awk '{print $2}' |sudo xargs dpkg -P";

tips[10] = '编译时缺少h文件的自动处理';

code[10] = 'sudo auto-apt run ./configure';

tips[11] = "查看安装软件时下载包的临时存放目录";

code[11] = "ls /var/cache/apt/archives";

tips[12] = "备份当前系统安装的所有包的列表";

code[12] = "dpkg --get-selections | grep -v deinstall > ~/somefile";

tips[13] = "从备份的安装包的列表文件恢复所有包";

code[13] = "dpkg --set-selections < ~/somefile;sudo dselect";

tips[14] = "清理旧版本的软件缓存";

code[14] = "sudo apt-get autoclean";

tips[15] = "清理所有软件缓存";

code[15] = "sudo apt-get clean";

tips[16] = "删除系统不再使用的孤立软件";

code[16] = "sudo apt-get autoremove";

tips[17] = "查看包在服务器上面的地址";

code[17] = "apt-get -qq --print-uris install ssh | cut -d\\' -f2";

tips[18] = "查看内核";

code[18] = "uname -a";

tips[19] = "查看Ubuntu版本";

code[19] = "cat /etc/issue 或 lsb_release -a";

tips[20] = "查看内核加载的模块";

code[20] = "lsmod";

tips[21] = "查看PCI设备";

code[21] = "lspci";

tips[22] = "查看USB设备";

code[22] = "lsusb -v";

tips[23] = "查看网卡状态";

code[23] = "sudo ethtool eth0";

tips[24] = "查看CPU信息";

code[24] = "cat /proc/cpuinfo";

tips[25] = "显示当前硬件信息";

code[25] = "sudo lshw";

tips[26] = "显示系统运行时间";

code[26] = "uptime";

tips[27] = "查看硬盘的分区";

code[27] = "sudo fdisk -l";

tips[28] = "硬盘分区";

code[28] = "sudo fdisk /dev/sda";

tips[29] = "硬盘格式化";

code[29] = "sudo mkfs.ext3 /dev/sda1";

tips[30] = "硬盘检查(请不要检查已经挂载的分区，否则容易损坏数据)";

code[30] = "sudo fsck /dev/sda1";

tips[31] = "分区挂载";

code[31] = "sudo mount -t 文件系统类型 (-o nls=utf8 或 -o iocharset=utf8) 设备路经 访问路经 ";

tips[32] = "分区卸载";

code[32] = "sudo umount 目录名或设备名";

tips[33] = "查看IDE硬盘信息";

code[33] = "sudo hdparm -i /dev/hda";

tips[34] = "查看STAT硬盘信息 ";

code[34] = "sudo hdparm -I /dev/sda 或 sudo blktool /dev/sda id";

tips[35] = "查看硬盘剩馀空间";

code[35] = "df";

tips[36] = "查看目录占用空间";

code[36] = "du -hs 目录名";

tips[37] = "优盘没法卸载";

code[37] = "sync;fuser -km /media/usbdisk";

tips[38] = "查看硬盘当前读写情况";

code[38] = "sudo iostat -x 2";

tips[39] = "查看当前的内存使用情况";

code[39] = "free";

tips[40] = "动态显示进程执行情况";

code[40] = "top";

tips[41] = "查看当前有哪些进程";

code[41] = "ps -A";

tips[42] = "查看当前进程树";

code[42] = "pstree";

tips[43] = "中止一个进程";

code[43] = "kill 进程号 或 killall 进程名";

tips[44] = "强制中止一个进程";

code[44] = "kill -9 进程号 或 killall -9 进程名";

tips[45] = "图形方式中止一个程序";

code[45] = "xkill 出现骷髅标志的鼠标，点击需要中止的程序即可";

tips[46] = "查看进程打开的文件";

code[46] = "lsof -p";

tips[47] = "显示开启文件abc.txt的进程 ";

code[47] = "lsof abc.txt ";

tips[48] = "显示22端口现在运行什么程序 ";

code[48] = "lsof -i :22 ";

tips[49] = "显示nsd进程现在打开的文件 ";

code[49] = "lsof -c nsd";

tips[50] = "在后台运行程序，退出登录后，并不结束程序 ";

code[50] = "nohup 程序 &";

tips[51] = "详细显示程序的运行信息 ";

code[51] = "strace -f -F -o outfile <cmd>";

tips[52] = "增加系统最大打开文件个数";

code[52] = "ulimit -n 4096 或 echo 4096 > /proc/sys/fs/file-max";

tips[53] = "配置 ADSL ";

code[53] = "sudo pppoeconf";

tips[54] = "ADSL手工拨号";

code[54] = "sudo pon dsl-provider";

tips[55] = "激活 ADSL";

code[55] = "sudo /etc/ppp/pppoe_on_boot";

tips[56] = "断开 ADSL ";

code[56] = "sudo poff";

tips[57] = "查看拨号日志";

code[57] = "sudo plog";

tips[58] = "如何设置动态域名";

code[58] = "w3m -no-cookie -dump 'http://usere:[email protected]/dyndns/update?system=dyndns&hostname=yourdns.3322.org'";

tips[59] = "根据IP查网卡地址 ";

code[59] = "arping IP地址";

tips[60] = "根据IP查电脑名 ";

code[60] = "nmblookup -A IP地址";

tips[61] = "查看当前IP地址 ";

code[61] = "ifconfig eth0 |awk '/inet/ {split($2,x,\":\");print x[2]}'";

tips[62] = "查看当前外网的IP地址 ";

code[62] = "w3m -no-cookie -dump www.123cha.com|grep -o '[0-9]\\{1,3\\}\\.[0-9]\\{1,3\\}\\.[0-9]\\{1,3\\}\\.[0-9]\\{1,3\\}'";

tips[63] = "查看当前监听80端口的程序 ";

code[63] = "lsof -i :80";

tips[64] = "查看当前网卡的物理地址";

code[64] = "arp -a | awk '{print $4}'";

tips[65] = "同一个网卡增加第二个IP地址 ";

code[65] = "sudo ifconfig eth0:0 1.2.3.4 netmask 255.255.255.0";

tips[66] = "立即让网络支持nat ";

code[66] = "echo 1 | sudo tee /proc/sys/net/ipv4/ip_forward; sudo iptables -t nat -I POSTROUTING -j MASQUERADE ";

tips[67] = "查看路由信息";

code[67] = "netstat -rn 或 sudo route -n";

tips[68] = "手工增加一条路由 ";

code[68] = "sudo route add -net 192.168.0.0 netmask 255.255.255.0 gw 172.16.0.1";

tips[69] = "手工删除一条路由";

code[69] = "sudo route del -net 192.168.0.0 netmask 255.255.255.0 gw 172.16.0.1";

tips[70] = "修改网卡MAC地址的方法 ";

code[70] = "sudo ifconfig eth0 hw ether 00:AA:BB:CC:DD:EE";

tips[71] = "统计当前IP连接的个数 ";

code[71] = "netstat -na|grep ESTABLISHED|awk '{print $5}'|awk -F: '{print $1}'|sort|uniq -c|sort -r -n";

tips[72] = "屏蔽IPV6 ";

code[72] = "echo 'blacklist ipv6' | sudo tee /etc/modprobe.d/blacklist-ipv6";

tips[73] = "察看当前网络连接状况以及程序 ";

code[73] = "sudo netstat -atnp";

tips[74] = "查看ADSL的当前流量";

code[74] = "sudo ethstatus -i ppp0";

tips[75] = "查看域名的注册备案情况";

code[75] = "whois baidu.cn";

tips[76] = "查看到某一个域名的路由情况";

code[76] = "tracepath baidu.cn";

tips[77] = "重新从服务器获得IP地址 ";

code[77] = "sudo dhclient";

tips[78] = "下载网站文档";

code[78] = "wget -r -p -np -k http://www.xxx.com";

tips[79] = "如何5个线程下载";

code[79] = "axel -n 5 http://www.xxx.com/downloadfile.zip";

tips[80] = "添加一个服务";

code[80] = "sudo update-rc.d 服务名 defaults 99";

tips[81] = "删除一个服务 ";

code[81] = "sudo update-rc.d 服务名 remove";

tips[82] = "临时重启一个服务";

code[82] = "/etc/init.d/服务名 restart";

tips[83] = "临时关闭一个服务";

code[83] = "/etc/init.d/服务名 stop";

tips[84] = "临时启动一个服务";

code[84] = "/etc/init.d/服务名 start";

tips[85] = "增加用户";

code[85] = "sudo adduser 用户名";

tips[86] = "删除用户";

code[86] = "sudo deluser 用户名";

tips[87] = "修改当前用户的密码";

code[87] = "passwd";

tips[88] = "修改用户密码";

code[88] = "sudo passwd 用户名";

tips[89] = "修改用户资料";

code[89] = "sudo chfn userid";

tips[90] = "如何禁用某个帐户";

code[90] = "sudo usermod -L 用户名 或 sudo passwd -l 用户名";

tips[91] = "如何启用某个帐户";

code[91] = "sudo usermod -U 用户名 或 sudo passwd -u 用户名";

tips[92] = "增加用户到admin组";

code[92] = "sudo usermod -G admin -a 用户名";

tips[93] = "配置默认Java使用哪个 ";

code[93] = "sudo update-alternatives --config java";

tips[94] = "终端设置代理 ";

code[94] = "export http_proxy=http://xx.xx.xx.xx:xxx";

tips[95] = "修改系统登录信息";

code[95] = "sudo vim /etc/motd";

tips[96] = "使用sun的java编译器";

code[96] = "sudo update-java-alternatives -s java-6-sun";

tips[97] = "切换输入法引擎";

code[97] = "im-switch -c";

tips[98] = "转换文件名由GBK为UTF8 ";

code[98] = "convmv -r -f cp936 -t utf8 --notest --nosmart *";

tips[99] = "转换文件内容由GBK到UTF8 ";

code[99] = "iconv -f gbk -t utf8 $i > newfile";

tips[100] = "转换 mp3 标签编码 ";

code[100] = "sudo apt-get install python-mutagen;find . -iname '*.mp3' -execdir mid3iconv -e GBK {} \\;";

tips[101] = "控制台下显示中文 ";

code[101] = "sudo apt-get install zhcon;zhcon --utf8 --drv=vga";

tips[102] = "lftp 登录远程Windows中文FTP　";

code[102] = "lftp :~>set ftp:charset GBK";

tips[103] = "PDF 文件乱码 ";

code[103] = "sudo apt-get install xpdf-chinese-simplified xpdf-chinese-traditional poppler-data";

tips[104] = "一屏查看文件内容 ";

code[104] = "cat 文件名";

tips[105] = "分页查看文件内容";

code[105] = "more 文件名";

tips[106] = "可控分页查看文件内容";

code[106] = "less 文件名";

tips[107] = "根据字符串匹配来查看文件部分内容";

code[107] = "grep 字符串 文件名";

tips[108] = "显示包含字符串的文件名";

code[108] = "grep -l -r 字符串 路径";

tips[109] = "显示不包含字符串的文件名";

code[109] = "grep -L -r 字符串 路径";

tips[110] = "快速查找某个文件";

code[110] = "find 目录 -name 文件名";

tips[111] = "创建两个空文件";

code[111] = "touch file1 file2";

tips[112] = "递归式创建一些嵌套目录";

code[112] = "mkdir –p /tmp/xxs/dsd/efd";

tips[113] = "递归式删除嵌套目录";

code[113] = "rm –fr /tmp/xxs";

tips[114] = "回当前用户的宿主目录";

code[114] = "cd ~";

tips[115] = "查看当前所在目录的绝对路经";

code[115] = "pwd";

tips[116] = "列出当前目录下的所有文件";

code[116] = "ls -a";

tips[117] = "移动路径下的文件并改名";

code[117] = "mv 路径/文件  /新路径/新文件名";

tips[118] = "复制文件或者目录";

code[118] = "cp -av 原文件或原目录 新文件或新目录";

tips[119] = "查看文件类型";

code[119] = "file filename";

tips[120] = "对比两个文件之间的差异";

code[120] = "diff file1 file2";

tips[121] = "显示xxx文件倒数6行的内容 ";

code[121] = "tail -n 6 xxx";

tips[122] = "不停地显示最新的内容 ";

code[122] = "tail -n 10 -f /var/log/apache2/access.log";

tips[123] = "查看文件第五行到第10行的内容 ";

code[123] = "sed -n '5,10p' /var/log/apache2/access.log";

tips[124] = "查找关于xxx的命令 ";

code[124] = "apropos xxx 或 man -k xxx";

tips[125] = "通过ssh传输文件 ";

code[125] = "scp -rp /path/filename username@remoteIP:/path ";

tips[126] = "把所有文件的后辍由rm改为rmvb ";

code[126] = "rename 's/.rm$/.rmvb/' *";

tips[127] = "把所有文件名中的大写改为小写";

code[127] = "rename 'tr/A-Z/a-z/' *";

tips[128] = "删除特殊文件名 --help.txt 的文件";

code[128] = "rm -- --help.txt 或 rm ./--help.txt";

tips[129] = "查看当前目录的子目录";

code[129] = "ls -d */. 或 echo */.";

tips[130] = "将最近30天访问过的文件移动到上级back目录 ";

code[130] = "find . -type f -atime -30 -exec mv {} ../back \\;";

tips[131] = "显示一小时以内的包含 xxxx 的文件";

code[131] = "find . -type f -mmin -60|xargs -i  grep -l xxxx '{}'";

tips[132] = "显示最近2小时到8小时之内的文件";

code[132] = "find . -mmin +120 -mmin -480 -exec more {} \\;";

tips[133] = "删除修改时间在30天之前的文件 ";

code[133] = "find . -type f -mtime +30 -mtime -3600 -exec rm {} \\;";

tips[134] = "删除访问时间在30天之前的文件 ";

code[134] = "find . -type f -atime +30 -atime -3600 -exec rm {} \\;";

tips[135] = "删除掉guest的以avi或rm结尾的文件";

code[135] = "find . -name '*.avi' -o -name '*.rm' -user 'guest' -exec rm {} \\;";

tips[136] = "删除掉不以java和xml结尾7天没有使用的文件 ";

code[136] = "find . ! -name *.java ! -name '*.xml' -atime +7 -exec rm {} \\;";

tips[137] = "删除所有的 .svn 目录 ";

code[137] = "find . -name .svn -type d -exec rm -fr {} \\;";

tips[138] = "删除所有以“~”结尾的临时文件 ";

code[138] = "find . -name '*~' -exec rm {} \\;";

tips[139] = "统计当前文件个数";

code[139] = "ls .|wc -w";

tips[140] = "统计当前目录个数";

code[140] = "ls -l |grep ^d|wc -l";

tips[141] = "显示当前目录下2006-01-01的文件名 ";

code[141] = "ls -l |grep 2006-01-01 |awk '{print $8}'";

tips[142] = "使用ssh方式同步远程数据到本地目录 ";

code[142] = "rsync -Pa -I --size-only --delete --timeout=300 Remote_IP:/home/ubuntu /backup";

tips[143] = "增加 7Z 压缩软件";

code[143] = "sudo apt-get install p7zip p7zip-full p7zip-rar";

tips[144] = "增加 rar 软件压缩和解压缩支持 ";

code[144] = "sudo apt-get install rar unrar";

tips[145] = "解压缩 xxx.tar.gz ";

code[145] = "tar -zxvf xxx.tar.gz";

tips[146] = "解压缩 xxx.tar.bz2 ";

code[146] = "tar -jxvf xxx.tar.bz2";

tips[147] = "压缩aaa bbb目录为xxx.tar.gz ";

code[147] = "tar -zcvf xxx.tar.gz aaa bbb";

tips[148] = "压缩aaa bbb目录为xxx.tar.bz2 ";

code[148] = "tar -jcvf xxx.tar.bz2 aaa bbb";

tips[149] = "增加 lha 支持 ";

code[149] = "sudo apt-get install lha";

tips[150] = "增加解 cab 文件支持 ";

code[150] = "sudo apt-get install cabextract";

tips[151] = "显示日历";

code[151] = "cal";

tips[152] = "设置日期";

code[152] = "date -s mm/dd/yy";

tips[153] = "设置时间";

code[153] = "date -s HH:MM";

tips[154] = "将时间写入CMOS ";

code[154] = "hwclock --systohc";

tips[155] = "查看CMOS时间 ";

code[155] = "hwclock --show";

tips[156] = "读取CMOS时间 ";

code[156] = "hwclock --hctosys";

tips[157] = "从服务器上同步时间 ";

code[157] = "sudo ntpdate ntp.ubuntu.com";

tips[158] = "设置电脑的时区为上海";

code[158] = "sudo cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime";

tips[159] = "关闭UTC，将当前时间写入CMOS。";

code[159] = "sudo sed -ie 's/UTC=yes/UTC=no/g' /etc/default/rcS;sudo hwclock --systohc";

tips[160] = "修改mysql的root口令 ";

code[160] = "sudo mysqladmin -u root -p password '你的新密码'";

tips[161] = "如何使用命令关闭显示器 ";

code[161] = "xset dpms force off";

tips[162] = "设置CPU的频率 ";

code[162] = "sudo apt-get install cpufrequtils;sudo cpufreq-info ";

tips[163] = "命令关机";

code[163] = "sudo halt";

tips[164] = "现在关机";

code[164] = "sudo shutdown -h now";

tips[165] = "晚上11点自动关机";

code[165] = "sudo shutdown -h 23:00";

tips[166] = "60分钟后关机";

code[166] = "sudo shutdown -h +60";

tips[167] = "命令重启电脑";

code[167] = "sudo reboot";

tips[168] = "现在重启电脑";

code[168] = "sudo shutdown -r now";

tips[169] = "关闭笔记本的触摸板 ";

code[169] = "synclient touchpadoff=1";

tips[170] = "开启笔记本的触摸板";

code[170] = "synclient touchpadoff=0";

tips[171] = "统计每个单词的出现频率并排序 ";

code[171] = "awk '{arr[$1]+=1 }END{for(i in arr){print arr[i]\"\\t\"i}}' FILE_NAME | sort -rn";

tips[172] = "统计80端口的连接并排序 ";

code[172] = "netstat -na|grep :80|awk '{print $5}'|awk -F: '{print $1}'|sort|uniq -c|sort -r -n";

tips[173] = "把终端加到右键菜单";

code[173] = "sudo apt-get install nautilus-open-terminal ";

tips[174] = "如何删除Totem电影播放机的播放历史记录 ";

code[174] = "rm ~/.recently-used";

tips[175] = "vim 如何显示彩色字符 ";

code[175] = "sudo cp /usr/share/vim/vimcurrent/vimrc_example.vim /usr/share/vim/vimrc";

tips[176] = "让 vim 直接支持编辑 .gz 文件 ";

code[176] = "sudo apt-get install vim-full";

tips[177] = "vim 如何显示行号";

code[177] = ":set number";

tips[178] = "查看在会话设置的启动程序";

code[178] = "ls ~/.config/autostart";

tips[179] = "提高wine的反应速度 ";

code[179] = "sudo sed -ie '/GBK/,/^}/d' /usr/share/X11/locale/zh_CN.UTF-8/XLC_LOCALE";

tips[180] = "制作ISO文件";

code[180] = "mkisofs -o test.iso -Jrv -V test_disk /home/carla/";

tips[181] = "延迟10秒抓图";

code[181] = "gnome-screenshot -d 10";

tips[182] = "延迟5秒抓当前激活窗口";

code[182] = "gnome-screenshot -w -d 5";

tips[183] = "如何命令行刻录";

code[183] = "cdrecord -scanbus;cdrecord -v -eject speed=8 dev=1,1,0 test.iso";

tips[184] = "回收站在哪里";

code[184] = "~/.local/share/Trash/";

tips[185] = "默认打开方式的配置文件在哪里";

code[185] = "~/.local/share/applications/mimeapps.list";

tips[186] = "如何查看HTTP头";

code[186] = "w3m -dump_head http://www.xxx.com";

tips[187] = "连续监视内存使用情况";

code[187] = "watch  -d free";

tips[188] = "如何切换到root帐号";

code[188] = "sudo -Hs";

tips[189] = "只读挂载ntfs分区";

code[189] = "sudo mount -t ntfs -o nls=utf8,umask=0 /dev/sdb1 /mnt/c";

tips[190] = "可写挂载ntfs分区";

code[190] = "sudo mount -t ntfs-3g -o locale=zh_CN.utf8,umask=0 /dev/sdb1 /mnt/c";

tips[191] = "挂载fat32分区";

code[191] = "sudo mount -t vfat -o iocharset=utf8,umask=0 /dev/sda1 /mnt/c";

tips[192] = "挂载共享文件";

code[192] = "sudo mount -t smbfs -o  username=xxx,password=xxx,iocharset=utf8 //192.168.1.1/share /mnt/share";

tips[193] = "挂载ISO文件";

code[193] = "sudo mount -t iso9660 -o loop,utf8 xxx.iso /mnt/iso";

tips[194] = "带行号显示文件的内容";

code[194] = "nl 文件名";

tips[195] = "批量将rmvb转为avi";

code[195] = "for i in *; do mencoder -oac mp3lame -lameopts vbr=3 -ovc xvid -xvidencopts fixed_quant=4 -of avi $i -o `echo $i | sed -e 's/rmvb$/avi/'`; done";

tips[196] = "批量将svg转为png";

code[196] = "for i in *; do inkscape $i --export-png=`echo $i | sed -e 's/svg$/png/'`; done";

tips[197] = "批量缩小图片到30%";

code[197] = "for i in *; do convert -resize 30%x30% $1 sm-$1; done";

tips[198] = "批量转换jpg到png";

code[198] = "for i in *; do convert $i `echo $i | sed -e 's/jpg$/png/'`; done";

tips[199] = "获取jpg的扩展信息(Exif)";

code[199] = "identify -verbose xxx.jpg";

tips[200] = "查看当前系统所有的监听端口";

code[200] = "nc -zv localhost 1-65535";

tips[201] = "去掉文件中的^M";

code[201] = "cat filename | tr -d \"^M\" > newfile";

tips[202] = "去掉文件中的^M";

code[202] = "sed -e \"s/^M//g\" filename > newfile";

tips[203] = "转换bin/cue到iso文件";

code[203] = "sudo apt-get install bchunk;bchunk image.bin image.cue image";

tips[204] = "转换目录到iso文件";

code[204] = "mkisofs dirname -o isofile.iso";

tips[205] = "转换CD到iso文件";

code[205] = "dd if=/dev/cdrom of=isofile.iso";

tips[206] = "ape转换为flac";

code[206] = "sudo apt-get install flac shntool;shntool split -t \"%n.%p-%t\" -f example_UTF-8.cue -o flac example.ape -d flacOutputDir";

tips[207] = "ape转换为mp3";

code[207] = "sudo apt-get install flac shntool lame;shntool split -t \"%n.%p-%t\" -f example_UTF-8.cue -o 'cust ext=mp3 lame --r3mix -b 320 --quiet - %f' example.ape -d mp3OutputDir";

tips[208] = "检查本地是否存在安全隐患";

code[208] = "sudo apt-get install rkhunter;rkhunter --checkall";

tips[209] = "如何安装杀毒软件";

code[209] = "sudo apt-get install clamav;clamscan -r ~/";

tips[210] = "查看网络连接状态";

code[210] = "netstat -n | awk '/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}'";

tips[211] = "统计程序的内存耗用";

code[211] = "ps -eo fname,rss|awk '{arr[$1]+=$2} END {for (i in arr) {print i,arr[i]}}'|sort -k2 -nr";

tips[212] = "显示当前内存大小";

code[212] = "free -m |grep \"Mem\" | awk '{print $2}'";

tips[213] = "按内存从大到小排列进程";

code[213] = "ps -eo \"%C  : %p : %z : %a\"|sort -k5 -nr";

tips[214] = "按cpu利用率从大到小排列进程";

code[214] = "ps -eo \"%C  : %p : %z : %a\"|sort  -nr";

tips[215] = "统计当前目录下所有jpg文件的尺寸";

code[215] = "find . -name *.jpg -exec wc -c {} \\;|awk '{print $1}'|awk '{a+=$1}END{print a}'";

tips[216] = "清除僵死进程";

code[216] = "ps -eal | awk '{ if ($2 == \"Z\") {print $4}}' | sudo kill -9";

tips[217] = "CD 抓轨为 mp3 (有损)";

code[217] = "sudo apt-get install abcde;abcde -o mp3 -b";

tips[218] = "CD 抓轨为 Flac (无损)";

code[218] = "sudo apt-get install abcde;abcde -o flac -b";

tips[219] = "显示系统安装包的统计信息";

code[219] = "apt-cache stats";

tips[220] = "显示系统全部可用包的名称";

code[220] = "apt-cache pkgnames";

tips[221] = "显示包的信息";

code[221] = "apt-cache show k3b";







index = Math.floor(Math.random() * tips.length);

document.write("&nbsp;"+tips[index]+':&nbsp;&nbsp;<code>'+code[index]+'</code>');