sh -c

 

# 测试1：一行包含多个ERROR（你的情况）
echo "ERRORERRORERRORERRORERROR" > test1.log
grep "ERROR" test1.log | wc -l
# 输出: 1

# 测试2：多行，每行包含ERROR
echo "ERROR first line" > test2.log
echo "ERROR second line" >> test2.log  
echo "normal line" >> test2.log
grep "ERROR" test2.log | wc -l
# 输出: 2

# 测试3：一行包含ERROR，其他行不包含
echo "normal line" > test3.log
echo "ERRORERROR" >> test3.log
echo "another normal" >> test3.log
grep "ERROR" test3.log | wc -l
# 输出: 1