GREPing for Nulls Post: 55729

9 More Discussions You Might Find Interesting

1. Programming

Blanks vs: Nulls

I'm relatively new to Pro*C programming. In the following example: char name; EXEC SQL SELECT 'John Doe' INTO :name FROM DUAL; "John Doe" is in positions 0-7, blanks in 8-19, and a null in 20. I would really prefer the null to be in position 8 and I don't care what's after that. I wrote a...

2. Shell Programming and Scripting

Replacing nulls using sed

Hi, I am trying to replace nulls with spaces in every record of a '|' delimited file. I used this command - cat input.dat | sed 's/||/| |/g' > output But if a space appears twice '| | |' , then only the first null is getting replaced with a space. The second one remains as a null. I...

3. Shell Programming and Scripting

sort truncates line when they contain nulls

When I try to sort a file where some records contain nulls i.e. hex 00 the sort truncates the record when it reaches the null and writes message: "sort: warning: missing NEWLINE added at end of input file myfile" I'm assuming from this that the sort sees the null as a special character and...

4. Shell Programming and Scripting

include NULLs in line length check

Hello, I am checking the length of each line of a fixed length file and making sure all lines are 161 length. My problem is that some files contain null characters which gets stripped out of my echo. How do I have the NULLs included in my check? (and I cannot replace or sub the NULL values with...

5. Shell Programming and Scripting

replace nulls with whitespaces in a file

Hi, i have a file which contains data in fixed length. each row contains data of 10 characters fixed length. The data in the file appears like 4567782882 some times i may recieve dat less than fixed length of 10. in such a case i find nulls appended at the trailing spaces when i do a...

6. Red Hat

Counting columns in a delimited record with NULLs

I am trying to count the number of columns in a delimited flat file. The record is tab delimited. When I use the command wc -w, I am getting unexpected results when the record contains a NULL value. I believe it is because there is a "word" missing. The below example will return 4 words...

7. Shell Programming and Scripting

Script that Nulls Contents of Files

Ok, I'm stuck here with a plan to get what I need done completed. I want to use perl to produce a document. lets say the document will be a pdf document. Now, is there a way for me to put a tiny little code in that pdf document that can make the pdf file null itself if run on a non-unix...

8. Shell Programming and Scripting

Replace nulls with a value in a file

9. UNIX for Beginners Questions & Answers

Remove or truncate trailing nulls from file

I want to remove from a file the trailing null characters (0x00) and stop doing so when a different byte is found (which should not be deleted), and either put the result to the same file or a different one. Any ideas?

LEARN ABOUT DEBIAN

dpm_modifyfs

DPM_MODIFYFS(3) 					       DPM Library Functions						   DPM_MODIFYFS(3)

NAME

       dpm_modifyfs - modify the parameters of a disk pool filesystem

SYNOPSIS

       #include <sys/types.h>
       #include "dpm_api.h"

       int dpm_modifyfs (char *server, char *fs, int status, int weight)

DESCRIPTION

       dpm_modifyfs modifies the parameters of a disk pool filesystem.

       server specifies the host name of the disk server where this filesystem is mounted.

       fs     specifies the mount point of the dedicated filesystem.

       status Initial  status of this filesystem. It can be set to 0 or FS_DISABLED or FS_RDONLY.  (-1 will tell the server to not change the cur-
	      rent value).

       weight specifies the weight of the filesystem. This is used during the filesystem selection. The value must be positive (-1 will  tell  the
	      server to not change the current value).	It is recommended to use a value lower than 10.

       This function requires ADMIN privilege.

RETURN VALUE

       This routine returns 0 if the operation was successful or -1 if the operation failed. In the latter case, serrno is set appropriately.

ERRORS

       ENOENT	    Filesystem does not exist.

       EACCES	    The caller does not have ADMIN privilege.

       EFAULT	    server or fs is a NULL pointer.

       EINVAL	    The length of server exceeds CA_MAXHOSTNAMELEN or the length of fs exceeds 79.

       SENOSHOST    Host unknown.

       SEINTERNAL   Database error.

       SECOMERR     Communication error.

LCG
								      $Date$							   DPM_MODIFYFS(3)