1、有一个日志文件access.log,内容如下
09:28:59 404 2003356554
09:29:00 200 2003232321
09:30:00 300 2003232321
09:36:00 500 2003232321
09:39:00 200 2003232321
09:40:00 400 2003232321
09:47:00 200 2003232321
...
现在需要统计第二列包含200这个字符的总行数,请写出命令?(只用awk能不能搞定)
最优答案:
[[email protected] ~]# awk ‘{sum[$2]++} END {print sum["200"]}‘ access.log
3
其他答案
[[email protected] ~]# awk ‘{sum[$2]+=1} END {for(a in sum) print a,sum[a]}‘ access.log
1
300 1
400 1
200 3
404 1
500 1
[[email protected] ~]# awk ‘{sum[$2]+=1} END {for(a in sum) print sum[a]}‘ access.log
[[email protected] ~]# awk ‘{sum[$2]+=1} END {print sum["200"]}‘ access.log
3
[[email protected] ~]# awk ‘{++sum[$2]} END {print sum["200"]}‘ access.log
3
[[email protected] ~]# awk ‘{sum[$2]+=1}END{for(i in sum)print i"\t"sum[i]}‘ access.log | grep 200
200 3
[[email protected] ~]# awk ‘{print $2}‘ access.log | sort -n | grep 200 | wc -l
3
[[email protected] ~]# awk ‘{print $2}‘ access.log | grep -w "200" | wc -l
3
[[email protected] ~]# awk ‘{if($2=="200")sum++}END{print sum}‘ access.log
3
2、请写出以下服务的默认端口号
SSH:22 Telnet:23 SMTP:25 POP3:110 DNS:53 FTP:20,21
HTTPS:443 HTTP:80 远程桌面:3389
3、linux命令题目
a.在/home目录创建admin目录
b.设置该目录的拥有组为admin
c.要求该组中成员对该目录有读写权限,且组中成员创建文件也属于admin组
[[email protected] ~]# mkdir /home/admin
[[email protected] ~]# chown .admin /home/admin
[[email protected] ~]# ls -ld /home/admin
drwxr-xr-x. 2 root admin 6 Aug 30 00:13 /home/admin
[[email protected] ~]# chmod g=rwxs /home/admin
4、linux下面挂载镜像rhel6.4.iso到/mnt
如果rhel6.4.iso只是硬盘里面的一个文件
[[email protected] ~]# mount rhel6.4.iso /mnt
mount: /dev/loop0 is write-protected, mounting read-only
#如果报错,手动执行loop
[[email protected] ~]# mount -o loop rhel6.4.iso /mnt
mount: /dev/loop0 is write-protected, mounting read-only
如果是个光驱:
[[email protected] ~]# mount /dev/cdrom /mnt
7、使用route添加默认网关172.41.8.100
route add default gw 172.18.8.100
8、查看nginx进程和nginx监听端口的命令
ps -ef | grep nginx
ss -ltn | grep nginx
9、linux查看系统资源情况
top
free
vmstat
iostat
原文地址:https://blog.51cto.com/14012942/2433698
时间: 2024-10-14 04:06:57