合并多个文件

使用A for 声明:

for a in *.txt; do grep target $a >$a.out; done

只有一个gawk命令

gawk '/target/ {print $0 > FILENAME".out"}' *.txt

您可以只使用shell,不需要外部命令

for file in *.txt
do
    while read -r line
    do
        case "$line" in 
            *pattern*) echo $line >> "${file%.txt}.out";;
        esac
    done  < "$file"
done