grep 正则如何去精准匹配

zhaolianghz

[root@test]# echo "v119-test-sky" | grep -wE '[a-z]([-a-z0-9][a-z0-9])?'
v119-test-sky
[root@test]# echo "v11.9-test-sky" | grep -wE '[a-z]([-a-z0-9][a-z0-9])?'
v11.9-test-sky


如何只匹配到v119-test-sky???

关阴月飞

echo "v119-test-sky"  |grep -P '[a-z]\d+-'

关阴月飞

echo "v119-test-sky"  |grep -P '[a-z]\d+-'

m1336791724

echo "v119-test-sky"  |grep -oP '[a-z]\d+-[a-z]{4}-[a-z]{3}'

zhaolianghz

回复 2# 关阴月飞
，谢谢