Processing Files In a Directory

[cmanL]

I want to write a Bash shell script to process all the files of a certain type in a directory. Something like this pseudo code:

 
file = getFirstFile( ".txt" ); //get first text file in the current directory

while ( filesLeftInDirectory ) //while files of this type are left in the directory
{
    processFile ( file );  //process the file
    file = getNextFile ( file , ".txt"  ); //get the next file of the proper type
}

Can this be done in C/C++? I've never written Bash scripts so please keep it simple.

[marko]

Does it have to be bash?, perl could do that pretty basically with the below:

#!/usr/bin/perl -w
#
#
use strict;
use warnings;

sub processFile
{
        # need to put here the necessary per file processing
        print "@_\n";  # do a print to prove it's called correctly
}

my @txtfiles = <*.txt>;


foreach my $tfile ( @txtfiles )
{
        processFile($tfile);
}

exit 0;

You'd just need to add the details to "processFile" to do the processing

[Skull One]

It is quite easy:

for i in *.txt; do

# do something, for instance:
echo "Found file $i"

done

[ocratato]

Originally Posted by cmanL

I want to write a Bash shell script to process all the files of a certain type in a directory. Something like this pseudo code:
...
Can this be done in C/C++? I've never written Bash scripts so please keep it simple.

To do this in C check out the opendir and scandir functions. The info pages even include some nice examples. (Oh, and don't forget closedir() or you might run out of file handles.)

If you happen to be using the Qt libraries, they have a C++ class called QDir that you might use.

However, the bash script, shown previously, is the simplest approach. You can even do the processing part in a C/C++ program that would then only have to worry about the one file.

[cmanL]

Ok , thanks for your responses !