统计文件里面特定字符串出现次数
有三种方法：
1.
grep -o '字符串' file | wc -l
2.
awk -v RS="@#$j" '{print gsub(/字符串/,"&")}' file
3.
awk'{s+=gsub(/字符串/,"&")}END{prints}'file
有三种方法：
1.
grep -o '字符串' file | wc -l
2.
awk -v RS="@#$j" '{print gsub(/字符串/,"&")}' file
3.
awk'{s+=gsub(/字符串/,"&")}END{prints}'file