I know how to ping in Perl. That is easy. What I am wondering is if there is a way for Perl to determine whether the ping was successful or not. Or do I need to save the results out and parse the results seperately looking for the #of tries and successful revieves.
Thanks. (1 Reply)
From within a directory, how do I determine whether I have write permission for it.
test -w pwd ; echo ?
This doesn't work as it returns false, even though I have write permission. (4 Replies)
Hi,
when I execute some simple commands on my solaris system, I am getting the following warning message:
Could anybody tell me what could be the reason
Ex:- If I give the command,
which ls
Warning: cannot determine current directory
... (15 Replies)
I am uploading files that need to be processed prior to uploading. I will put the files in a directory. My question is how can I write an easy process to kick off a script once a file has been added? Is there an easy way to determine if a file has been added to a directory?
Thanks (1 Reply)
I am uploading files that need to be processed prior to uploading. I will put the files in a directory. My question is how can I write an easy process to kick off a script once a file has been added? Is there an easy way to determine if a file has been added to a directory?
Thanks (7 Replies)
Hi,
I have a little Perl question.
I need to determine the last word in the following string:
h t t p://abc.def.com/hijklm
The output should be the string hijklm.
h t t p is of course http.
The string between the slashes always differs.
The string after the last slash always differs.... (4 Replies)
Hi All,
I'm just wondering how can i determined if there's a file in directory and put it in a logs?
dir="/home/test/"
Please advise,
Thanks,
Use code tags, thanks. (1 Reply)
Hi,
I have 5 files as below
$ ll sam*
-rw-rw-rw- 1 sam ugroup 0 Mar 21 06:06 sam3
-rw-rw-rw- 1 sam ugroup 0 Apr 3 22:41 sam2
-rw-rw-rw- 1 sam ugroup 17335 Apr 10 06:07 sam1
-rw-rw-rw- 1 sam ugroup 5 Apr 10 07:53 sam5
-rw-rw-rw- 1 sam ugroup 661 Apr 10 08:16 sam4
I want to list out... (4 Replies)
Discussion started by: sam05121988
4 Replies
LEARN ABOUT OSF1
scandir
scandir(3) Library Functions Manual scandir(3)NAME
scandir, alphasort - Scans or sorts directory contents
LIBRARY
Standard C Library (libc.a)
SYNOPSIS
#include <sys/types.h> #include <sys/dir.h>
int scandir ( char *dir_name, struct dirent * (*name_list[ ]), int (*select) ( struct dirent *dir ), int (*compare) (
struct dirent **dir1, struct dirent **dir2 ) );
int alphasort ( struct dirent **dir1, struct dirent **dir2 );
PARAMETERS
Points to the directory name. Points to the array of pointers to directory entries. Points to a user-supplied function that is called by
the scandir() function to select which entries to include in the array. Points to a user-supplied function that sorts the completed
array. Points to a dirent structure. Points to a dirent structure.
DESCRIPTION
The scandir() function reads the directory pointed to by the dir_name parameter. It then uses the malloc() function to create an array of
pointers to directory entries. The scandir() function returns the number of entries in the array and, through the name_list parameter, a
pointer to the array.
The select parameter points to a user-supplied function that the scandir() function calls to select which entries to include in the array.
The selection routine is passed a pointer to a directory entry and returns a nonzero value for a directory entry that is included in the
array. If the select parameter is a null value, all directory entries are included.
The compare parameter points to a user-supplied function that is passed to the qsort() function to sort the completed array. If the compare
parameter is a null value, the array is not sorted.
The memory allocated to the array can be deallocated by freeing each pointer in the array, and the array itself, with the free() function.
The alphasort() function alphabetically compares the two dirent structures pointed to by the dir1 and dir2 parameters. This function can be
passed as the compare parameter to either the scandir() function or the qsort() function. A user-supplied subroutine may also be used.
RETURN VALUES
The scandir() function returns -1 if the directory cannot be opened for reading or if the malloc() function cannot allocate enough memory
to hold all the data structures. If successful, the scandir() function returns the number of entries found.
The alphasort() function returns the following values: Less than 0 (zero): The dirent structure pointed to by the dir1 parameter is lexi-
cally less than the dirent structure pointed to by the dir2 parameter. 0 (zero): The dirent structures pointed to by the dir1 parameter
and the dir2 parameter are equal. Greater than 0 (zero): The dirent structure pointed to by the dir1 parameter is lexically greater than
the dirent structure pointed to by the dir2 parameter.
RELATED INFORMATION
Functions: malloc(3), opendir(3), qsort(3) delim off
scandir(3)