awk for循环

 

awk for循环及 uniq 去重，获取数字值；

注：uniq 只针对相邻的重复行去重，所以与sort配合使用。

#uniq_circle.sh
for  item in `grep errors test.txt | awk -F "==" '{print $2}' | sort | uniq `
do
    echo "test:$item"
done


#test.txt
==44444== 2 errors occurred
==11111== 1 errors occurred
==234567== 1 errors occurred
==44444== 1 errors occurred

 

执行结果

[test@linuxcentos7 awktest]$ ./uniq_circle.sh 
test:11111
test:234567
test:44444