1、打开core dump功能
root@ubuntu2:/holger# cat coreconf.sh
#!/bin/bash
ulimit -c unlimited
echo "kernel.core_pattern=/tmp/corefile/core.%e.%t" >> /etc/sysctl.conf
sysctl -p
2、linux系统资源监控
root@ubuntu2:/holger# cat perfmonitor.sh
#!/bin/bash
fun_monitor(){
interval=5
echo `date +%F`""`date +%T` >./logs/vmstat.log
echo `date +%F`""`date +%T` >./logs/mpstat.log
echo `date +%F`""`date +%T` >./logs/sar-mem.log
echo `date +%F`""`date +%T` >./logs/iostat.log
vmstat $interval >>./logs/vmstat.log &
mpstat -P ALL $interval >> ./logs/mpstat.log &
sar -r $interval >> ./logs/sar-mem.log &
iostat $interval >>./logs/iostat.log &
}
fun_stopmonitor(){
pkill vmstat
pkill sar
pkill iostat
pkill mpsta
echo `date +%F`""`date +%T` >>./logs/vmstat.log
echo `date +%F`""`date +%T` >>./logs/mpstat.log
echo `date +%F`""`date +%T` >>./logs/sar-mem.log
echo `date +%F`""`date +%T` >>./logs/iostat.log
mv ./logs/vmstat.log ./logs/vmstat`date +%Y%m%d%H%M%S`.log
mv ./logs/mpstat.log ./logs/mpstat`date +%Y%m%d%H%M%S`.log
mv ./logs/sar-mem.log ./logs/sar-mem`date +%Y%m%d%H%M%S`.log
mv ./logs/iostat.log ./logs/iostat`date +%Y%m%d%H%M%S`.log
}
if [ -e logs ]
then
continue
else
mkdir logs
fi
case $1 in
start)
fun_monitor
echo start
;;
stop)
fun_stopmonitor
echo stop
;;
*)
echo "Usage: $0 star./logs/stop"
esac
3、expect脚本
#!/usr/bin/expect
set timeout 2
set filepath [lindex $argv 0]
set width [lindex $argv 1]
set height [lindex $argv 2]
set decode [lindex $argv 3]
set encode [lindex $argv 4]
spawn xxx.exe
expect "path:"
send "$filepath\n"
expect "width:"
send "$width\n"
expect "height:"
send "$height\n"
expect "Decode"
send "$decode\n"
expect "Encode"
send "$encode\n"
expect "start"
interact
4、挂载window共享目录：
mount -o username=$username,password=$passwd //192.168.2.161/share /mnt/share
5、修改XML配置文件
#修改dfs.namenode.secondary.http-address
SecondaryNameNode=`cat ./clusterconfig.csv |grep "^SecondaryNameNode" |awk -F \, '{print $2}'`
pervalue=`cat config/hdfs-site.xml |grep -n2 dfs.namenode.secondary.http-address |grep value|awk -F [\/\:\>] '{print $2}'`
sed -i -e "s/$pervalue:9001/$NameNode:9001/" config/hdfs-site.xml
6、读取文件指定行
cat nodes.list|sed -n "${i}p" # $i为指定行
7、统计两个文本文件的相同行
grep -Ff file1 file2
8、统计file2中有，file1中没有的行
grep -vFf file2 file1
7、删除匹配行
sed -i -e "/server.*/d" config/zoo.cfg # server.*需要匹配的行
8、找出两个文件都存在的行
grep -Fxf 1.txt 2.txt
9、找出两个文件不同的行
grep -Fvxf 1.txt 2.txt
10、监控网卡流量
yum install sysstat