Help with creating a text file in perl with file creation date. Post: 302516972

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Top Forums Shell Programming and Scripting Help with creating a text file in perl with file creation date. Post 302516972 by Corona688 on Monday 25th of April 2011 04:05:39 PM

04-25-2011

Registered User

It seems a common misconception that there's a Specific Way��™ to do things in a computer language and you can find all the answers by googling "how do I do X in perl". It really doesn't work that way. You have to break it down into logical steps.

1) Logical step 1. How do I get the time in perl? I guess wildly and try perldoc -f time That returns it in seconds. A start.

2) Logical step 2. How can I convert that into something I can use? Well, the 'time' function documentation suggests the localtime function and perldoc -f localtime suggests the strftime function and the POSIX module and even gives examples. time isn't needed apparently since localtime calls it implicitly unless you give it otherwise. man strftime also tells you what strings strftime needs.

3) Logical step 3. How can I open a string as a filename? The same way you open any other filename. perldoc -f open

So you get

Code:

#!/usr/bin/perl

use POSIX;

my $filename=strftime("filename_%y%M%d.TXT", localtime);
print "filename is $filename\n";
open(FILE, ">$filename") || die("Couldn't open file");

print FILE "hello world\n";

close(FILE);
exit(0);

I knew none of this by heart, I just followed the trail of instructions.

Last edited by Corona688; 04-25-2011 at 06:06 PM.. Reason: simplify out sprintf

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lcp_crtpol2

LCP_CRTPOL2(8)							   User Manuals 						    LCP_CRTPOL2(8)

NAME

       lcp_crtpol2 - create an Intel(R) TXT policy (and policy data file)

SYNOPSIS

       lcp_crtpol2 COMMAND [OPTION]

DESCRIPTION

       lcp_crtpol2 is used to create an Intel(R) TXT policy (and policy data file) for platforms produced after 2008.

OPTIONS

       --create
	      Create an TXT policy. The following options are available:

	      --type any|list	 type

	      --pol file	 policy file

	      [--ver version]	 version

	      [--minver ver]	 SINITMinVersion

	      [--rev ctr1,ctrN]  revocation values (comma separated, no spaces)

	      [--ctrl pol-ctrl]  policy control

	      [--data file]	 policy data file

	      [file]... 	 policy list files

       --show Show the content of policy file or policy data file. Available options are:

	      [--brief] 	 breif format output

	      [policy-file]	 policy file

	      [policy-data-file] policy data file

       --help Print out the help message.

       --verbose
	      Enable verbose output; can be specified with any command.

EXAMPLES

       Assuming  a  policy  list file list-unsig.lst has been created by the command lcp_crtpolist(8).	The following example will create a policy
       and policy data file.

       lcp_crtpol2 --create --type list --pol list.pol --data list.data list-unsig.lst

SEE ALSO

       lcp_crtpol(8), lcp_mlehash(8), lcp_crtpolelt(8), lcp_crtpollist(8).

tboot								    2011-12-31							    LCP_CRTPOL2(8)