Question

C语言怎么实现逐行读取指定字符串丫？

eth0 Link encap:Ethernet HWaddr 00:0C:29
inet addr:192.10.64.64 Bcast:192.10.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1213688 errors:0 dropped:0 overruns:0 frame:0
TX packets:410276 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
lo Link encap:Ethernet HWaddr 00:0C:29
inet addr:192.10.64.64 Bcast:192.10.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1213688 errors:0 dropped:0 overruns:0 frame:0
TX packets:410276 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
eth1 Link encap:Ethernet HWaddr 00:0C:29
inet addr:192.10.64.64 Bcast:192.10.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1213688 errors:0 dropped:0 overruns:0 frame:0
TX packets:410276 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
以上内容放在一个input.txt里面，怎么把eth0和eth1的RX packets:1213688 TX packets:410276字段输出到另外一个output.txt里面。。各位大仙帮帮忙丫！

Answer 1

你这东西是linux环境下的东西吧。。用shell脚本,扩展了正则表达式的egrep就行了
egrep 'RX|TX' input.txt > output.txt
如果是C语言的话，用readline逐行逐行读取，找到开头，读入RX当行，再读入下一行。之后同样的继续readline扫描后面字符串就行了。。

Answer 2

扫描input.txt里面内容，然后比对关键字RX将之后的字符直到 collisions关键字，写到output.txt或者文件结束，close文件