用于选择子目录中的 .c 文件的 bash 脚本

Question

My problem is slightly weird so bear with me.

In my current path, I have 3 folders named folder1 , folder2 and folder3.

In each folder is a C program implemented over multiple files and subdirectories. For each folder , I want to run the command

sea <file1.c> <file2.c> ... 

where <file1.c> , <file2.c> ... are ALL the .c files present in folder 1 or in some subfolder of folder1 or some subfolder of a subfolder of folder1 and so on...

I want to write a bash script to do so.

I create a FOLDERS variable, with:

FOLDERS=(folder1 folder2 folder3)

I can iterate over each entry in FOLDERS, but my question is how to collect all the .c files of given folder in a new variable like CFILES and then use that variable for a instruction like:

sea $(CFILES)

for each folder?

Answer 1

Don't.

for d in folder[123]; do ( cd $d && sea *.c ); done

The only complication I see is if the order of arguments has to be something other than the lexical order this will generate.

If you don't absolutely have to be IN the folder for the code to work, then you don't need the subshell parens.

for d in folder[123]; do sea $d/*.c; done

If you need all the *.c files in all subdirectories, then use globstar .

shopt -s globstar
for d in folder[123]; do sea $d/**/*.c; done

This should limit files processed to those ending in .c under one of folder1 folder2 folder3 but including any subdirectories to any depth.

Or, as above, if you need to run the script directly in the directory with each file:

shopt -s globstar
for d in folder[123]/**/; do ( cd $d && sea *.c ); done

If your list of directories is not as simple or short as folder1 folder2 folder3 , an array is best.

dirs=( folder[123] otherFolder /some/full/path another/relative/*/path )

Then use the same logic as needed.

for d in "${dirs[@]}"; do sea $d/**/*.c; done

or

for d in "${dirs[@]}"/**/; do ( cd $d && sea *.c ); done

Just please be sure you understand what each is doing. Feel free to ask questions if you don't.

Answer 2

Use the globstar option to allow wildcards to expand recursively.

shopt -s globstar
for folder in "${FOLDERS[@]"; do
    sea "$folder"/**/*.c