grep 在HP-UX下的遞歸查找

Linux: man grep 可以看到 -r 選項(xiàng)
?-R, -r, --recursive
????????????? Read all files under each directory, recursively; this is equivalent to the -d recurse option.
即：-r 選項(xiàng)可以查找指定目錄下每個(gè)子目錄下的所有文件
eg:
grep -r "28281" .
//查詢當(dāng)前路徑下文件及各個(gè)子目錄下的所有文件中的包含28281的文件；

但是在HP-UX下不支持-r這一選項(xiàng),怎么辦呢？
查詢man find,可以看到：
?-exec cmd??????????????? True if the executed cmd returns a zero value
?????????????????????????????? as exit status.? The end of cmd must be
?????????????????????????????? punctuated by a semicolon (;) or a plus sign
?????????????????????????????? (+) (semicolon and plus are special to the
?????????????????????????????? shell and must be escaped).? When + is used,
?????????????????????????????? cmd aggregates a set of path names and
?????????????????????????????? executes on the set.? Any command arguments
?????????????????????????????? between the first occurrence of {} and + are
?????????????????????????????? ignored.? The reason for preferring + to a ;
?????????????????????????????? is vastly improved performance.? Any command
?????????????????????????????? argument {} is replaced by the current path
?????????????????????????????? name.? cmd may contain supplementary code set
?????????????????????????????? characters.
?????????????????????????????? // 命令必須以分號(hào);或者加號(hào)+結(jié)束（分號(hào)和加號(hào)在shell
?????????????????????????????? 中有特殊意義，必須用轉(zhuǎn)義）。當(dāng)使用+時(shí)，命令會(huì)聚集成
?????????????????????????????? 路徑名的一個(gè)集合，{}和+之間命令參數(shù)會(huì)被忽略。
?????????????????????????????? 優(yōu)先使用+，是因?yàn)?#43;的性能更好。
?????????????????????????????? 命令中的參數(shù){}將會(huì)被當(dāng)前的路徑名說取代。

比如：
find . -type f -exec grep "IFPC" {} \+
//在當(dāng)前路進(jìn)行及其子文件夾中的文件中查找包含IFPC字符串的文件；

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