參考文檔 https://www.aliang.org/Linux/nginx-count-access-log.html
### 1.獲取指定日期的日志內容
```
cat access.log | egrep "26/Jun/2018"
```
### 2.獲取指定時間段的日志內容
```
方式一:
cat access.log | egrep "26/Jun/2018" | sed -n '/00:31:22/,/08:01:28/p'
方式二:
cat access.log | sed -n '/26\/Jun\/2018:00:31:22/, /26\/Jun\/2018:08:01:28/p'
方式三:
sed -n '/26\/Jun\/2018:00:31:22/, /26\/Jun\/2018:08:01:28/p' access.log
注意:sed使用的時間,需要在日志中實際存在的,否則獲取不到日志
```
### 3. 獲取指定時間段訪問量最高的前十位IP
```
sed -n '/26\/Jun\/2018:00:31:22/, /26\/Jun\/2018:08:01:28/p' access.log | awk '{print $1}' | sort | uniq -c | sort -nr -k1 | head -n 10
注意:awk后邊不能寫日志文件路徑
```