文本如下:
student:
class:A
name:huang shan
name:li qing
name:zhang wenxia
name:wei xi
student:
class:B
name:ding yi
name:shen qi
name:qin fei
teacher:
grade:A
name:lu lin
name:du ye
name:du yu
name:li yifeng
name:chen ling
name:zhang jiang
student:
class:c
name:shen yi
name:wu tong
Summary:
student:no absent
teacher:no absent
===============================================================
要求将student关键字所在行及以下的class和name行全部输出,到空格停止。
跪求大神指导,之前有用sed都没有实现,很着急。
sed å¯ä»¥å®ç° ä½sedä¸çµæ´»
å·²æµè¯
ä¿åå°æ件code.sedä¸ ä½¿ç¨ sed -f code.sed dat.txt å°±å¯ä»¥è¾åºæ件
ä½æä»¶æ ¼å¼å¿
é¡»ä¸¥æ ¼ï¼æ¯ä¸ª student以空ç½è¡ä½ä¸ºç»æï¼ç»æè¡å
没æä»»ä½å符ã建议å¢å ä¸ä¸ªå
³é®åend ç¨æ¥ä½ä¸ºç»ææ è®°ã
é£ææ¨èçåï¼ä¹åæçå°awkæè grep,æè è¿æå ¶ä»æ´æ¹ä¾¿çåãè¿ä¸ªèæ¬æ¯ætestæ件éçä¿¡æ¯è¿è¡çéç¶å追å å°resultæ件ä¸ãæ¯æ¬¡é½è¦è¿æ»¤æ±æ»ï¼ç¶åä¸å®å¨æåæ¥ççãè°¢è°¢ä½ å¦ã
追ç没çæ¨è ï¼çä½ ä»»å¡çå¤ææ§ãæå¤æ计ç®çè¯æå¥½æ¯ awkãè¿æ»¤å¯ä»¥ç¨grep æsedã
å¦æåªæ¯çé ææ¹ä¾¿çå°±æ¯è¿ä¸ªsed èæ¬äºã
ä»»å¡è§£å³äº 请é纳ã