1、使用find的参数实现

[root@xiaobb mnt]# find . -maxdepth 1 -size +1000000c
./sys.tar.gz
./install.tar.bz2
./CTeX_2.9.0.152_Full.exe
./php-5.3.6.tar.gz
[root@xiaobb mnt]# ls -lh
total 1.3G
-rw-r--r-- 1 root root 1.1G 2011-04-28 11:35 CTeX_2.9.0.152_Full.exe
drwxr-xr-x 19 root root 12K 2011-04-24 20:28 git
-rw-r--r-- 1 root root 135M 2011-03-18 07:00 install.tar.bz2
drwxrwxrwx 8 flash games 4.0K 2011-04-24 06:38 libevent-1.4.12-stable
-rw-r--r-- 1 root root 488K 2011-04-23 22:46 libevent-1.4.12-stable.tar.gz.gz
drwxr-xr-x 26 root root 4.0K 2011-04-24 21:14 linux-2.6
drwx------ 2 root root 16K 2011-03-10 05:56 lost+found
drwxr-xr-x 10 root root 4.0K 2010-10-22 02:18 mnt
drwxr-xr-x 8 1000 1000 4.0K 2011-04-24 05:51 nginx-0.8.54
-rw-r--r-- 1 root root 635K 2011-04-23 21:12 nginx-0.8.54.tar.gz
drwxr-xr-x 16 1005 1005 4.0K 2011-04-24 07:00 php-5.3.6
-rw-r--r-- 1 root root 14M 2011-04-23 16:04 php-5.3.6.tar.gz
drwxr-xr-x 8 root root 4.0K 2011-04-24 07:02 php-fpm-0.6-5.3.1
-rw-r--r-- 1 root root 415K 2011-04-20 22:08 php-fpm-0.6-5.3.1.zip
drwxr-xr-x 37 root root 4.0K 2011-04-24 20:40 progit
drwxr-xr-x 31 root wheel 4.0K 2011-04-28 05:36 sys
-rw-r--r-- 1 root root 19M 2009-07-13 22:38 sys.tar.gz
[root@xiaobb mnt]#

2、使用ls+awk组合管道

[root@xiaobb mnt]# find . -maxdepth 1 -size +1000000c;
./sys.tar.gz
./install.tar.bz2
./CTeX_2.9.0.152_Full.exe
./php-5.3.6.tar.gz
[root@xiaobb mnt]# ls -l .|awk '{if($5>1000000) print R$8}'
CTeX_2.9.0.152_Full.exe
install.tar.bz2
php-5.3.6.tar.gz
sys.tar.gz
[root@xiaobb mnt]#

3、使用find+ll+awk组合（管道）

[root@xiaobb mnt]# find ./ -name "*" -maxdepth 0 -exec ls -l {} ;|awk '{if($5>1000000) print $8}'
CTeX_2.9.0.152_Full.exe
install.tar.bz2
php-5.3.6.tar.gz
sys.tar.gz
[root@xiaobb mnt]#
[root@xiaobb mnt]# find . -maxdepth 1 -size +1000000c;
./sys.tar.gz
./install.tar.bz2
./CTeX_2.9.0.152_Full.exe
./php-5.3.6.tar.gz

awk统计文件中某关键词出现次数的命令
awk-F""'{for(i=1;i=NF;++i)if($i=="a")++sum}END{printsum}'test.c[root@xiaobb5906]#awk'{for(i=1;i=NF;++i)if($i=="test")++sum}END{printsum}'test.c6[root@xiaobb5906]#cattest.ctesttestktesttestatesttestalt

shell 进度条实现代码
#!/bin/bashCOUNTER=0_R=0_C=`tputcols`_PROCEC=`tputcols`tputcup$_C$_Rprintf"["while[$COUNTER-lt100]doCOUNTER=`expr$COUNTER+1`sleep0.1printf"="_R=`expr$_R+1`_C=`expr$_C+1`tputcup$_PROCEC101printf"]%d%%"

一个用了统计CPU 内存 硬盘 使用率的shell脚本
#!/bin/bash#ThisscriptisusefordescribleCPUHardMemeryUtilizationtotal=0idle=0system=0user=0nice=0mem=0vmexec=/usr/bin/vmstatwhichsar/dev/null2&1if[$?-ne0]thenver=`vmstat-V|awk'{printf$3}'`nice=0temp=`v