Beefy Boxes and Bandwidth Generously Provided by pair Networks
The stupid question is the question not asked
 
PerlMonks  

Re^3: selcting a specific file

by andyford (Curate)
on Oct 22, 2007 at 22:24 UTC ( #646594=note: print w/ replies, xml ) Need Help??


in reply to Re^2: selcting a specific file
in thread selcting a specific file

That's my point. -z is looking for a zero byte file, but 'no content' could be a bunch of tabs and spaces.

[forda@hqnagtl1 ~]$ touch emptytest1 [forda@hqnagtl1 ~]$ touch emptytest2 [forda@hqnagtl1 ~]$ ls -l emptytest* -rw-rw-r-- 1 forda forda 0 Oct 22 17:19 emptytest1 -rw-rw-r-- 1 forda forda 0 Oct 22 17:19 emptytest2 [forda@hqnagtl1 ~]$ echo ' ' >> emptytest2 [forda@hqnagtl1 ~]$ ls -l emptytest* -rw-rw-r-- 1 forda forda 0 Oct 22 17:19 emptytest1 -rw-rw-r-- 1 forda forda 15 Oct 22 17:20 emptytest2
I put some spaces into a formerly empty file and now it has a size of 15.

non-Perl: Andy Ford


Comment on Re^3: selcting a specific file
Download Code
Re^4: selcting a specific file
by Anonymous Monk on Oct 22, 2007 at 23:33 UTC
    wht command did you select for getting such an output???

      Sorry, I should have mentioned that my example is on Unix. The point is that for -z to flag a file as empty, it must have nothing in it. No spaces, no tabs, no nothing.

      non-Perl: Andy Ford

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://646594]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others meditating upon the Monastery: (12)
As of 2014-10-31 17:17 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    For retirement, I am banking on:










    Results (221 votes), past polls