查看换行符
使用vim打开文件，输入:set ff?。根据返回结果可以文件类型
字符串
opcenter.sjb.bz
[root@opcenter backup]# echo ${HOSTNAME%.*}
opcenter.sjb
[root@opcenter backup]# echo ${HOSTNAME##*.}
bz
看配置文件
cat server.conf | grep "^[^#|^;]"
替换换行符
cat ip.test |sed ':a N;s/\n/, /;ta'
cat ip.test |awk '{printf("%s,",$1)}'
cat ip.test |grep -E -v '127.0.0.1|126.23.23.44'
分析Access log
#查找access log中请求时间超过1秒的请求
cat ms.access.log |awk '{s=NF-2; print $4, $7 , $s}' |awk '($3 > 1 ) {print $1, $2,$3}'
#查找下载量比较大的请求
cat *.access.log |grep "2015:01:0"|awk '{s=NF-2; print $2,$7 , $10,$s}' |awk '($3 > 1000000 ) {print $1, $2,$3,$4}'
AWK比较两个字段不同
awk ' $1 != $2 {print $1, $2}' weixin.1.log |grep "1502"
#
AWK切割, 分析网络请求
awk '{print $5}' netstat050604.txt |awk -F":" '{print $1}' |sort -nr |uniq -c |sort -nr |more
AWK分析日志
# 美国:
cat www.access.log |grep "ustest=forus "|grep -v "114.242.69.13" |grep -v "ApacheBench" |awk '{s=NF-2;t=NF-1; print $1,$7,$s,$t}'
# 北京:
cat m.access.log.20150716 |grep "ustest=forus "|grep -v "114.242.69.13" |grep -v "ApacheBench" |awk '{s=NF-5;t=NF-6; print $1,$7,$s,$t}'
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