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嗨我試圖做一個腳本，將給我一個新聞組活動的摘要。大部分工作到目前爲止，除了當我試圖使用匹配運算符來查看這個$ 6字段是否匹配表達式。我想把所有的戒指放在一個部分下。這是我的腳本是什麼樣子：如何在awk腳本中使用正則表達式？
newsread.awk：
BEGIN{
print "\t\t\tNews Reader Summary\n\n"
printf(" %-15s%-15s%-15s%-15s\n\n","lonestar","runner","ringer","rings");
articles[4];
groups[4];
times[4];
cs2413[4];cs2413d[4];
}
NR == 1 {date1 = $1 " " $2 " " $3}
$6 == "lonestar.jpl.utsa.edu"{
if ($7=="group"){
articles[1]+=$9;
if ($8=="utsa.cs.2413"){
cs2413[1]+=$9;
}
if ($8=="utsa.cs.2413.d"){
cs2413d[1]+=$9;
}
}else if ($7 == "exit"){
articles[1]+=$9;
groups[1]+=$11;
}else {
times[1]+=$13;
}
}
$6 == "runner.jpl.utsa.edu"{
if ($7=="group"){
articles[2]+=$9;
if ($8=="utsa.cs.2413"){
cs2413[2]+=$9;
}
if ($8=="utsa.cs.2413.d"){
cs2413d[2]+=$9;
}
}else if ($7 == "exit"){
articles[2]+=$9;
groups[2]+=$11;
}else {
times[2]+=$13;
}
}
$6 == "ringer.cs.utsa.edu"{
if ($7=="group"){
articles[3]+=$9;
if ($8=="utsa.cs.2413"){
cs2413[3]+=$9;
}
if ($8=="utsa.cs.2413.d"){
cs2413d[3]+=$9;
}
}else if ($7 == "exit"){
articles[3]+=$9;
groups[3]+=$11;
}else {
times[3]+=$13;
}
}
$6 ~ "/ring??.cs.utsa.edu/"{
if ($7=="group"){
articles[4]+=$9;
if ($8=="utsa.cs.2413"){
cs2413[4]+=$9;
}
if ($8=="utsa.cs.2413.d"){
cs2413d[4]+=$9;
}
}else if ($7 == "exit"){
articles[4]+=$9;
groups[4]+=$11;
}else {
times[4]+=$13;
}
}
END{
date2 = $1 " " $2 " " $3
printf("Articles: %-15d%-15d%-15d%-15d\n",articles[1],articles[2],articles[3],articles[4]);
printf("Groups: %-15d%-15d%-15d%-15d\n",groups[1],groups[2],groups[3],groups[4]);
printf("Cs2413: %-15d%-15d%-15d%-15d\n",cs2413[1],cs2413[2],cs2413[3],cs2413[4]);
printf("Cs2413.d: %-15d%-15d%-15d%-15d\n",cs2413d[1],cs2413d[2],cs2413d[3],cs2413d[4]);
printf("User Time: %-15d%-15d%-15d%-15d\n",times[1],times[2],times[3],times[4]);
printf("\nStart Time = %s\tEnd Time = %s\n",date1,date2);
}
這是news.notice的片段看起來像：
Feb 13 21:27:14 ringer nnrpd[11474]: lonestar.jpl.utsa.edu group alt.education.distance 19
Feb 13 21:27:14 ringer nnrpd[11474]: lonestar.jpl.utsa.edu exit articles 19 groups 1
Feb 13 21:27:14 ringer nnrpd[11474]: lonestar.jpl.utsa.edu times user 0.470 system 0.930 elapsed 4.766
Feb 13 21:27:49 ringer nnrpd[11462]: ring42.cs.utsa.edu exit articles 0 groups 2
Feb 13 21:27:49 ringer nnrpd[11462]: ring42.cs.utsa.edu times user 2.020 system 1.430 elapsed 45.114
Feb 13 21:28:00 ringer nnrpd[11482]: lonestar.jpl.utsa.edu group utsa.lonestar 7
Feb 13 21:28:00 ringer nnrpd[11482]: lonestar.jpl.utsa.edu exit articles 7 groups 1
Feb 13 21:28:00 ringer nnrpd[11482]: lonestar.jpl.utsa.edu times user 0.520 system 0.890 elapsed 48.286
Feb 13 21:28:38 ringer innd: ME running
Feb 13 21:28:43 ringer nnrpd[11344]: lonestar.jpl.utsa.edu unrecognized NOOP
Feb 13 21:29:01 ringer nnrpd[11601]: lonestar.jpl.utsa.edu connect
Feb 13 21:29:01 ringer nnrpd[11601]: lonestar.jpl.utsa.edu exit articles 0 groups 0
Feb 13 21:29:01 ringer nnrpd[11601]: lonestar.jpl.utsa.edu times user 0.470 system 0.770 elapsed 1.456
Feb 13 21:29:03 ringer nnrpd[11602]: lonestar.jpl.utsa.edu connect
Feb 13 21:29:03 ringer nnrpd[11472]: ring29.cs.utsa.edu exit articles 0 groups 0
Feb 13 21:29:03 ringer nnrpd[11472]: ring29.cs.utsa.edu times user 1.360 system 0.790 elapsed 114.771
Feb 13 21:29:03 ringer nnrpd[11602]: lonestar.jpl.utsa.edu exit articles 0 groups 0
Feb 13 21:29:03 ringer nnrpd[11602]: lonestar.jpl.utsa.edu times user 0.530 system 0.650 elapsed 1.524
Feb 13 21:29:25 ringer nnrpd[11615]: lonestar.jpl.utsa.edu connect
，我使用這個命令：
awk -f newsread.awk news.notice > newsread.summary
這裏是newsread.summary：
News Reader Summary
lonestar runner ringer rings
Articles: 144686 25066 2 0
Groups: 5282 8344 19 0
Cs2413: 0 0 0 0
Cs2413.d: 40 25 0 0
User Time: 266197 83377 128 0
Start Time = Feb 13 21:27:14 End Time = Feb 14 20:56:49
它必須是awk腳本。
的 「聲明」'文章[4];組[4];次[4]; cs2413 [4]; cs2413d [4];'是不必要的，可能不會做你認爲他們做的事。在awk的所有變種中，沒有必要聲明數組，也沒有這樣做的機制。當數組被索引時（或者在某些awk實現中，當腳本被解析時），數組會自動彈出。 – rici
這很好理解，謝謝！我會擺脫他們。 – MeesterMarcus