#!/bin/bash ## shell常用命令 2016-11-03 ## http://www.aqzt.com ## email: ppabc@qq.com ## robert yu ## centos 6和centos 7 简单的比如如何查看apache进程数 [root@localhost fd]# ps -ef|grep httpd|wc -l 1 如何统计apache的每秒访问数？ tail access_log | awk '{print $1,$4}' [root@localhost logs]# grep -c `date -d '3 second ago' +%T` access_log 0 2、将一个文本的奇数行和偶数行合并，第2行和第3行合并 [root@localhost bin]# cat 1 48 Oct 3bc1997 lpas 68.00 lvx2a 138 484 Jan 380sdf1 usp 78.00 deiv 344 483 nov 7pl1998 usp 37.00 kvm9d 644 320 aug der9393 psh 83.00 wiel 293 231 jul sdf9dsf sdfs 99.00 werl 223 230 nov 19dfd9d abd 87.00 sdiv 230 219 sept 5ap1996 usp 65.00 lvx2c 189 216 Sept 3zl1998 usp 86.00 kvm9e 234 [root@localhost bin]# sed '$!N;s/\n/ /g' 1 48 Oct 3bc1997 lpas 68.00 lvx2a 138 484 Jan 380sdf1 usp 78.00 deiv 344 483 nov 7pl1998 usp 37.00 kvm9d 644 320 aug der9393 psh 83.00 wiel 293 231 jul sdf9dsf sdfs 99.00 werl 223 230 nov 19dfd9d abd 87.00 sdiv 230 219 sept 5ap1996 usp 65.00 lvx2c 189 216 Sept 3zl1998 usp 86.00 kvm9e 234 [root@localhost bin]# sed -n -e 2p -e 3p 1|sed '$!N;s/\n/ /' 484 Jan 380sdf1 usp 78.00 deiv 344 483 nov 7pl1998 usp 37.00 kvm9d 644 3、read 命令5秒后自动退出 [root@localhost bin]# read -t 5 4、自动ftp上传 #!/bin/sh ftp -n<