如何在包含前一行模式的文件中添加一個額外的行？

我有一個文件-

something
\title{\hypertarget{A64L}{A64L(3)}}
something
\title{\hypertarget{MALLOC}{MALLOC(3)}}
something
\title{\hypertarget{STRCMP}{STRCMP(3)}}  

in 這個詞{}可以是任何東西，但在 Continuous 中是一樣的{}。

我想得到

something
\title{\hypertarget{A64L}{A64L(3)}}
\addcontentsline{A64L}
something
\title{\hypertarget{MALLOC}{MALLOC(3)}}
\addcontentsline{MALLOC}
something
\title{\hypertarget{STRCMP}{STRCMP(3)}}
\addcontentsline{STRCMP}  

我嘗試跟隨，但失敗了。

sed -e /\\\\title\{\\\\hypertarget\{.*\}\{.*\(3\)\}\}/a\\\\\\addcontentsline\{\&\} filename

這是https://tex.stackexchange.com/questions/408244/how-to-make-toc-without-having-any-section-parts-name的擴展

我不確定您要擷取的確切內容，但是

$ sed 's/\\title{\\hypertarget\({[^}]*}\).*/&\n\\addcontentsline\1/' file
something
\title{\hypertarget{A64L}{A64L(3)}}
\addcontentsline{A64L}
something
\title{\hypertarget{MALLOC}{MALLOC(3)}}
\addcontentsline{MALLOC}
something
\title{\hypertarget{STRCMP}{STRCMP(3)}}  
\addcontentsline{STRCMP}

j=`grep -o "{[0-9A-Z]\{4\}}" k1.txt | sed -r "s/\s+//g" | sed '/^$/d'`;
grep -B1 "$j" k1.txt  | sed "/title/s/.*/&\n\\\addcontentsline$j/g";
for i in `grep -o "{[A-Z]\{6\}}" k1.txt`; do
 grep -B1 $i k1.txt| sed "/title/s/.*/&\n\\\addcontentsline$i/g";
done 

輸出：

something
\title{\hypertarget{A64L}{A64L(3)}}
\addcontentsline{A64L}
something
\title{\hypertarget{MALLOC}{MALLOC(3)}}
\addcontentsline{MALLOC}
something
\title{\hypertarget{STRCMP}{STRCMP(3)}}
\addcontentsline{STRCMP}

引用自：https://unix.stackexchange.com/questions/414070