实时扫描文件，遇到连续 5 行相同的行时执行某些命令
Mysql 日志有类似这样的内容：
1649560 Query select * from actions where uniqueid like 'ernie-1328697839.1233158-%-dequeue' and class='queue' and server='ernie' and time<='1328698322' and action='dequeue' limit 1
1649560 Query select * from actions where uniqueid like 'ernie-1328697839.1233158-%-dequeue' and class='queue' and server='ernie' and time<='1328698322' and action='dequeue' limit 1
1649560 Query select * from actions where uniqueid like 'ernie-1328697839.1233158-%-dequeue' and class='queue' and server='ernie' and time<='1328698322' and action='dequeue' limit 1
1649560 Query select * from actions where uniqueid like 'ernie-1328697839.1233158-%-dequeue' and class='queue' and server='ernie' and time<='1328698322' and action='dequeue' limit 1
1649560 Query select * from actions where uniqueid like 'ernie-1328697839.1233158-%-dequeue' and class='queue' and server='ernie' and time<='1328698322' and action='dequeue' limit 1
1649560 Query select * from actions where uniqueid like 'ernie-1328697839.1233158-%-dequeue' and class='queue' and server='ernie' and time<='1328698322' and action='dequeue' limit 1
1649560 Query select * from actions where uniqueid like 'ernie-1328697839.1233158-%-dequeue' and class='queue' and server='ernie' and time<='1328698322' and action='dequeue' limit 1
1649560 Query select * from actions where uniqueid like 'ernie-1328697839.1233158-%-dequeue' and class='queue' and server='ernie' and time<='1328698322' and action='dequeue' limit 1
我想要一个 bash shell 脚本来执行以下操作：
- 该脚本将实时扫描 mysql.log 文件（类似于 tail -F mysql.log< /code>)
- 如果遇到 5 个连续的相同行，那么它会调用一些命令（例如
echo "yes"）
Mysql log has something like:
1649560 Query select * from actions where uniqueid like 'ernie-1328697839.1233158-%-dequeue' and class='queue' and server='ernie' and time<='1328698322' and action='dequeue' limit 1
1649560 Query select * from actions where uniqueid like 'ernie-1328697839.1233158-%-dequeue' and class='queue' and server='ernie' and time<='1328698322' and action='dequeue' limit 1
1649560 Query select * from actions where uniqueid like 'ernie-1328697839.1233158-%-dequeue' and class='queue' and server='ernie' and time<='1328698322' and action='dequeue' limit 1
1649560 Query select * from actions where uniqueid like 'ernie-1328697839.1233158-%-dequeue' and class='queue' and server='ernie' and time<='1328698322' and action='dequeue' limit 1
1649560 Query select * from actions where uniqueid like 'ernie-1328697839.1233158-%-dequeue' and class='queue' and server='ernie' and time<='1328698322' and action='dequeue' limit 1
1649560 Query select * from actions where uniqueid like 'ernie-1328697839.1233158-%-dequeue' and class='queue' and server='ernie' and time<='1328698322' and action='dequeue' limit 1
1649560 Query select * from actions where uniqueid like 'ernie-1328697839.1233158-%-dequeue' and class='queue' and server='ernie' and time<='1328698322' and action='dequeue' limit 1
1649560 Query select * from actions where uniqueid like 'ernie-1328697839.1233158-%-dequeue' and class='queue' and server='ernie' and time<='1328698322' and action='dequeue' limit 1
I want a bash shell script that will do the follwoing:
- The script will scan the
mysql.logfile in real time (something liketail -F mysql.log) - If it encounters 5 consecutive identical lines then it would invoke some commands (say
echo "yes")
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可以为您做到...但是您所说的实时是什么意思？如果它必须不断运行，请为其设置一些
fifo机制，或类似的东西。或者简单地这样做：can do it for you... but what you mean by real time? If it had to be run constantly, set up some
fifomechanism for it, or something like that. Or simply do: