bash 不同文件夹中的同名文件

files with same name in different folders

提问by Bioinfoguy

I am looking for a command line that can do some operations on two files that have the same names but in different folders.

我正在寻找一个命令行，它可以对两个名称相同但位于不同文件夹中的文件执行一些操作。

for example if

例如如果

• folder Acontains files 1.txt, 2.txt, 3.txt, …
• folder Bcontains files 1.txt, 2.txt, 3.txt, …

• 文件夹A包含文件1.txt, 2.txt, 3.txt, ...
• 文件夹B包含文件1.txt, 2.txt, 3.txt, ...

I would like to concatenate the two files A/1.txtand B/1.txt, and A/2.txtand B/2.txt, …

我想连接两个文件A/1.txtand B/1.txt, and A/2.txtand B/2.txt, ...

I'm looking for a shell command to do that:

我正在寻找一个 shell 命令来做到这一点：

if file name in A is equal the file name in B then: 
    cat A/1.txt B/1.txt
end if

for all files in folders Aand B, if only names are matched.

对于文件夹A和 中的所有文件B，如果只有名称匹配。

回答by simonzack

Try this to get the files which have names in common:

试试这个以获取具有共同名称的文件：

cd dir1
find . -type f | sort > /tmp/dir1.txt
cd dir2
find . -type f | sort > /tmp/dir2.txt
comm -12 /tmp/dir1.txt /tmp/dir2.txt

Then use a loop to do whatever you need:

然后使用循环来做你需要的任何事情：

for filename in "$(comm -12 /tmp/dir1.txt /tmp/dir2.txt)"; do
    cat "dir1/$filename"
    cat "dir2/$filename"
done

回答by jm666

For simple things maybe will be enough the next syntax:

对于简单的事情，下一个语法可能就足够了：

cat ./**/1.txt 

or you can simply write

或者你可以简单地写

cat ./{A,B,C}/1.txt

e.g.

例如

$ mkdir -p A C B/BB
$ touch ./{A,B,B/BB,C}/1.txt
$ touch ./{A,B,C}/2.txt

gives

给

./A/1.txt
./A/2.txt
./B/1.txt
./B/2.txt
./B/BB/1.txt
./C/1.txt
./C/2.txt

and

和

echo ./**/1.txt

returns

回报

./A/1.txt ./B/1.txt ./B/BB/1.txt ./C/1.txt

so

所以

cat ./**/1.txt

will run the catwith the above arguments... or,

将cat使用上述参数运行...或者，

echo ./{A,B,C}/1.txt

will print

将打印

./A/1.txt ./B/1.txt ./C/1.txt #now, without the B/BB/1.txt

and so on...

等等...

回答by gniourf_gniourf

Will loop through all files in folder A, and if a file in Bwith same name exists, will catboth:

将遍历文件夹中的所有文件A，如果B存在同名的文件，cat两者都将：

for fA in A/*; do
    fB=B/${f##*/}
    [[ -f $fA && -f $fB ]] && cat "$fA" "$fB"
done

Pure bash, except the catpart, of course.

纯bash，cat当然，除了部分。