我在使用正则表达式时遇到了一些麻烦...我正在尝试解析一个 HTML 文件，寻找两个<br>标签之间的某些文本...在这些<br>（文本位于此处）<br>标签之间，总是有 3 种不同类型的文本那里 ...
Type 1)<br>S987 *BREKER BRD AUDIO-10 WX/R RADAR BOX,MAN,AC 24.95 GOOD<br>
类型 1 始终以字母字符开头，后跟 3 个数字，然后是各种不同的字符，如您所见。
Type 2)<br>==== ========== =============== ======= ====================<br>
类型 2 总是一堆“=”符号和空格...
Type 3)<br>Is normal text and may sometimes contain "=" signs<br>
现在，我的问题是这样的...即使有数百行，也只返回类型 1 的第一个实例...另外...我不希望类型 2 或类型 3 匹配...只有类型 1 的位于<br>标签之间...
目前我正在使用以下内容：
/<br>([A-Z]{1}\d{3}.*?)<br>/
这是针对 php 的...
谢谢
丹尼
答案1
<your_enormous_example \
sed -netP -e's/<br>[[:alpha:]][0-9]\{3\}[^<]*<br>/\n&\n/;D;:P' -eP\;D
<br>D163 *ALERT WRK EAR-10 EMERGENCY WEATHER RADIO BOX,MAN,AC PS 24.95 GOOD<br>
<br>D147 *AMERITRON AWM35 FLAT SWR/WATT METER BOX,MAN 124.95 GOOD S/N 013029<br>
<br>D113 *AOR AR-DV1B RCVR .10-1300MHZ BLOCKED BOX,MAN,ANT,PS 959.95 GOOD S/N 09560012<br>
<br>D152 *ASTRON SL11A PS 13V - 9 AMP BOX,MAN 69.95 GOOD<br>
<br>D118 *BEARCAT BCD-396XT DIGITAL TRUNKING HH SCANNER BOX,MAN,ACCYS 299.95 GOOD S/N 359Z48002616<br>
<br>D126 *COMET RS720 REAR LIP MOUNT NO COAX MAN,BOX 19.95 GOOD<br>
<br>D300 *CRANE WITNESS PLUS AM/FM RADIO WITH MP3 BOX,MAN 132.95 GOOD S/N 20701418<br>
<br>D110 *DEGEN DE 15 RCVR MW/SW/FM BOX,MAN,BATTS,CASE 31.95 GOOD S/N FB026781<br>
<br>D142 *DEGEN DE1126 DIGITAL AM/FM/SW/MP3 BOX,MAN 58.95 GOOD S/N GC036267<br>
<br>D307 *ETON FR 600 BLK AM/FM/WX/SW BOX,MAN 55.95 GOOD SMALL CRACK DISPLAY<br>
<br>D162 *ETON SATELLIT AM/FM/SW BOX,MAN 159.95 GOOD S/N 4B00088112S<br>
<br>D166 *ETON SCORP ORG EMERGENCY AM/FM/WX ORANGE BOX,MAN 37.95 GOOD S/N 100NOR001987<br>
<br>D159 *HEIL CC1-KM MIC CABLE KENW MODL RED NONE 28.95 GOOD<br>
<br>D104 *ICOM MBF1 SUCTION MOUNT BOX 54.95 GOOD<br>
<br>D140 *ICOM PS126 PS BOX,MAN 379.95 GOOD<br>
<br>D146 *ICOM R 75 RCVR COMM GC DIG 0.3-60MHZ COUPON ELIGIBLE-BOX 619.95 GOOD S/N 2203411<br>
<br>D155 *ICOM SM 50 DESK MIC 7600 NONE 239.95 GOOD S/N 02070171<br>
<br>D149 *SANGEAN DT-200X AM/FM POCKET RADIO BOX,MAN,EARBUDS 37.95 GOOD S/N 29011218<br>
<br>D145 *SANGEAN PT- 50 PORT DIG RCVR BOX,MAN 49.95 GOOD S/N 3C018394<br>
<br>D184 *SANGEAN RCR 8WF FM/WI-FI CLOCK RADIO BOX,MAN 139.95 GOOD S/N 0903000789<br>
<br>D109 *SANGEAN WR 2WH WHT AM/FM DIGITAL TABLE WHITE BOX,MAN,ACCS 104.95 GOOD S/N 0604000196<br>
<br>D170 *SONY ICF-SW7600GR RCVR PORT DIG LW/MW/FM/SW BOX,MAN,ANT 60 139.95 GOOD S/N 306100<br>
<br>D143 *VECTRONIC PM30UV B SWR 30/300W 100-500 BNC BOX,MAN 62.95 GOOD<br>
<br>D153 *YAESU FT 277R HT 440 5W BOX,MAN,ANT,CHRGR 109.95 GOOD S/N 2L500093<br>
<br>D114 *YAESU FT 277R HT 440 5W BOX,MAN 109.95 GOOD S/N 21500091<br>
<br>W631 BELL&HOWEL 9 BAND RADIO FM/MW/SW PORTABLE RADIO MAN,BOX,EAR BUDS 10.95 GOOD S/N A9029589<br>
<br>W301 EVEREX GP41D PORT. COLOR CAMERA(HITACHI) BOX,AP4U AC ADAPTOR 49.95 GOOD S/N 3036899<br>
<br>W920 MFJ 1278 MULTIMODE DATA CONTROLLER FINAL SALE 51.95 AS IS NOT TESTED/AS IS<br>
<br>Y004 PACCOMM TNC 220 DUAL MODEM PACKET CONTROLLER MANUAL 44.95 GOOD<br>
<br>U424 TORRESTRON HC-1 CHARGE ADPT. ICOM MAN. 3.95 GOOD<br>
<br>B103 _USED BOOK BY AMECO AMATEUR RADIO THEORY COURSE 10.95 GOOD 1976 EDITION<br>
<br>B105 _USED BOOK BY ARRL HANDBOOK 2014 29.95 GOOD<br>
<br>B072 _USED BOOK BY DARC RADIO AMATEURS WORLD ATLAS 1993 EDITION 19.95 GOOD<br>
<br>B277 _USED BOOK BY HEATHKIT GENERAL LICENSE CONTINUING ED 2 VOLUMES 19.95 GOOD<br>
<br>B113 _USED BOOK BY IBS PASSPORT 1996 9.95 GOOD<br>
<br>B071 _USED BOOK BY IBS PASSPORT 2003 NONE 9.95 GOOD<br>
<br>B169 _USED BOOK BY IOTA "IOTA DIRECTORY" 4.00 GOOD<br>
<br>B171 _USED BOOK BY IOTA "IOTA DIRECTORY" 4.00 GOOD<br>
<br>B084 _USED BOOK BY MCCULLY POCKET REF VX-7R 10.00 GOOD<br>
<br>B078 _USED BOOK BY NATIONAL NC "INSTR MAN NATIONAL NC-173" 19.95 GOOD<br>
<br>B014 _USED BOOK BY WRTH "1995 WRTH" 9.95 GOOD<br>
<br>B067 _USED BOOK BY WRTH "WRTH 1991 EDITION" 9.95 GOOD<br>
<br>B065 _USED BOOK BY WRTH "WRTH 1995 EDITION" 9.95 GOOD<br>
<br>B254 _USED BOOK BY WRTH WRTH 1996 6.95 GOOD<br>
<br>B108 _USED BOOK BY WRTH WRTH- 4 BOOKS 1995,96,97,98 34.95 GOOD<br>