Perl printing to two files

Otherwise a new file will be created and content will be added. Syntax: print filehandle string. Here, filehandle is associated to the file at the time of opening the file and string holds the content to be written to the file.

Example : Opening file Hello. Step 2: Getting the text from the standard input keyboard. Copying Content from one file to another: Before Code Execution: Source File: Destination File: Example : Example below reads the content from the source file and writes it to destination file.

Step 3: Copying the content with the use of print function. Step 4: Close the conn once reading file is done. Error Handling and Error Reporting There are two ways in which Errors can be handled Throw an exception if file cannot be opened Handling an error Give a warning if file cannot be opened and continue running Error reporting Throw an Exception Using Die Function When filehandle could not be assigned a valid file pointer at that time die gets executed printing the message and kills the current program.

Give a warning Using warn function When filehandle could not be assigned a valid file pointer it just prints warning message using warn function and keeps running. Skip to content. Change Language. Related Articles. Control Flow. OOP Concepts. And scalars can be localized to the current subproceedure. And CanSpice is correct about printing the filename rather than the value of the scalar.

Senator et Subscriptor. Post the code that's not working. Same permissions on the files? Originally posted by gmiller This isn't the source of your problem, but just a recommendation on coding style.

Ars Praefectus et Subscriptor. Posted: Thu Mar 16, pm. Given one or more files, e. Platform independent solution with Perl If you need to combine several files , and you want to make sure this will work on other platforms as well most importantly MS Windows , then you can read the files in memory and then write them out appending to the target file. Even that we should probably do line-by-line, in order to preserve memory. Instead of reading the input files in memory at once, we will read one line, the print it out to the target file.

Then we read in another file and print it out. This will work even with huge file. File way bigger than the available memory in the computer. This will do the job. In the script, after adding the safety net the first thing we do is pop the last element of the ARGV array that holds the content of the command-line. Then we copy all the other values to the sources array. We don't have to do this, we could have used ARGV directly, but I thought it is clearer if we have our data in descriptive variable names.