current directory

[Anonymous Monk]

Hey i wish to remove a temporary file in the current directory so i am doing this

 
my $rm_file = "temporary.tl";
unlink($rm_file) ;

now the file is not being removed , so i am assuming that what I am doing is not working on current directory , so i wish to remove the temporary file from current directory , so please help

[Athanasius]

Try this, from unlink:

unlink $rm_file or warn "Could not unlink $rm_file: $!";

and the error message (if any) should provide some indication as to what is going wrong.

Hope that helps,

[Anonymous Monk]

hey it says "permission denied "

[davido]

Hey, you just discovered your problem (and it ain't Perl).

[kcott]

Apart from the file not existing in the current directory, you may not have appropriate permissions to delete the file or the problem may be as simple as mistyping the file's name. Here's a number of tools you may find useful:

• unlink can tell you why the file wasn't deleted.
• Use Cwd to determine what the current directory is.
• Use chdir to change the current directory.
• Use file test operators to check for the existence of the file and what its permissions are.
• Use opendir and readdir to list all the files in a particular directory.
• Use qx{...} or `...` (see perlop - Quote-Like Operators) to run whatever commands are available on your OS to do any of the above.

[Anonymous Monk]

file names are same ; and i did cwd , it still says the same error . i was hoping is there any command that brings us to the current directory ? and if anyone can please state what could be the reason for permission deniale

[kcott]

"file names are same ; and i did cwd , it still says the same error ."

There were no replies when I started composing my response. My post was not related to Athanasius' post nor your 'hey it says "permission denied "'.

"i was hoping is there any command that brings us to the current directory ?"

That would be chdir — follow the link I posted above.

"and if anyone can please state what could be the reason for permission deniale"

That would depend on your OS. On *nix, it usually means you don't have write access to either the directory or the specific file.

Your questions suggest you're unfamiliar with the OS you're working on. I'd recommend seeking advice from the system administrator.

[Anonymous Monk]

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

Main( @ARGV );
exit( 0 );

sub Fudge {
    use Errno();
    join qq/\n/,
      "Error @_",
      map { "  $_" } int( $! ) . q/ / . $!,
      int( $^E ) . q/ / . $^E,
      grep( { $!{$_} } keys %! ),
      q/ /;
}

sub Main {
    for my $unfile ( 'NUL', './..', 'XYZQQQQQQQQQ', ){
        unlink $unfile or warn Fudge( $unfile );
    }
}
__END__
Error NUL
  22 Invalid argument
  87 The parameter is incorrect
  EMARCH_ENC_I17_IMM41a_VAL_POS_X
  EMR_SETTEXTALIGN
  EVENT_SYSTEM_MINIMIZESTART
  ERROR_BAD_COMMAND
  EINVAL
    at - line 20.
Error ./..
  22 Invalid argument
  5 Access is denied
  EMARCH_ENC_I17_IMM41a_VAL_POS_X
  EMR_SETTEXTALIGN
  EVENT_SYSTEM_MINIMIZESTART
  ERROR_BAD_COMMAND
  EINVAL
    at - line 20.
Error XYZQQQQQQQQQ
  2 No such file or directory
  2 The system cannot find the file specified
  ETO_OPAQUE
  ERROR_LABEL_QUESTIONABLE
  EDS_RAWMODE
  EWX_REBOOT
  EC_QUERYWAITING
  EIMES_CANCELCOMPSTRINFOCUS
  ENOENT
  ELEMENT_STATUS_IMPEXP
  ENABLE_WRAP_AT_EOL_OUTPUT
  ES_RIGHT
  EV_RXFLAG
  ERROR_FILE_NOT_FOUND
  EVENTLOG_WARNING_TYPE
  EVENPARITY
  ENOFILE
  ESB_DISABLE_RTDN
  EMARCH_ENC_I17_IMM41c_INST_WORD_X
  EEInfoNextRecordsMissing
  ES_DISPLAY_REQUIRED
  ESB_DISABLE_RIGHT
  EVENT_MODIFY_STATE
  EMR_POLYBEZIER
  ENABLE_LINE_INPUT
  EVENT_SYSTEM_ALERT
  EXCEPTION_UNWINDING
  EC_RIGHTMARGIN
  EVENTLOG_END_PAIRED_EVENT
  EXTEND_IEPORT
  ExceptionNestedException
  ESB_DISABLE_DOWN
  EVENTLOG_SEEK_READ
    at - line 20.