I'm not sure why you think you need this, ASCII NUL is the end of a string. The dirent struct member d_name is a char *. So it will be interpreted as ending with the character before the NUL.
I've got a very peculiar situation. I'm trying to find out if we can compare null fields with non-null. I've output csv files from SQL and Oracle. I need to compare each field from the files, and then find out any differences. The files usualy have over 500 fields, and send the resule to DBA.... (8 Replies)
hi i have a file name : file^name
that i need to scp to different machine without changing the name
scp file^name user@machine/file^name
its throwing the error
cant use ^name(Something like this)
any solution i already tried differnt combinations like
"user@machine/file^name"... (2 Replies)
I have an input file having 7 fields delimited by ,
eg :
1,ABC,hg,1,2,34,3
2,hj,YU,2,3,4,
3,JU,kl,4,5,7,
4,JK,KJ,3,56,4,5
The seventh field here in some lines is empty, whereas the other lines there is a value.
How do I insert string NULL at this location (7th loc) for these lines where... (8 Replies)
This is driving me crazy, and I'm hoping someone can help me out with this. I'm trying to do a simple while loop to go through a log file. I'm pulling out all of the lines with a specific log line, getting an ID from that line, and once I have a list of IDs I want to loop back through the log and... (2 Replies)
How are these two different? They both prevent output and error from being displayed. I don't see the use of the "&"
echo "hello" > /dev/null 2>&1
echo "hello" > /dev/null 2>1 (3 Replies)
Hi All,
While using below command I am getting some unusual character in Release.txt file.How could I remove or stop them to go into Release.txt file
wget -q http://m0010v.prod.wspan.com/nggfmonatl/Default.aspx
cat Default.aspx|egrep -in "EFS|HOTFIX" | awk -F/ '{print $(NF-1)}'|cut -d... (1 Reply)
I apologize if this question has been answered else where or is too elementary.
I ran across a KSH script (long unimportant story) that does this:
if ; then
CAS_SRC_LOG="/var/log/cas_src.log 2>&1"
else
CAS_SRC_LOG="/dev/null 2>&1"
fithen does this:
/usr/bin/echo "heartbeat:... (5 Replies)
Hi,
Below is list of files in my directory.
-rw-rw-r--. 1 Roots Roots 0 Dec 26 06:58 12345_kms_report.csv
-rw-rw-r--. 1 Roots Roots 0 Dec 26 06:59 12346_kms_report.csv
-rw-rw-r--. 1 Roots Roots 0 Dec 26 06:59 12347_kms_report.csv
-rw-rw-r--. 1 Roots Roots 0 Dec 26 06:59... (2 Replies)
Discussion started by: Balraj
2 Replies
LEARN ABOUT NETBSD
iftodt
DIRENT(3) BSD Library Functions Manual DIRENT(3)NAME
dirent -- directory format
SYNOPSIS
#include <sys/types.h>
#include <sys/dirent.h>
mode
DTTOIF(dirtype);
dirtype
IFTODT(mode);
DESCRIPTION
Directories provide a convenient hierarchical method of grouping files while obscuring the underlying details of the storage medium. A
directory file is differentiated from a plain file by a flag in its inode(5) entry. It consists of records (directory entries) each of which
contains information about a file and a pointer to the file itself. Directory entries may contain other directories as well as plain files;
such nested directories are referred to as subdirectories. A hierarchy of directories and files is formed in this manner and is called a
file system (or referred to as a file system tree).
Each directory file contains two special directory entries; one is a pointer to the directory itself called dot '.' and the other a pointer
to its parent directory called dot-dot '..'. Dot and dot-dot are valid pathnames, however, the system root directory '/', has no parent and
dot-dot points to itself like dot.
File system nodes are ordinary directory files on which has been grafted a file system object, such as a physical disk or a partitioned area
of such a disk. (See mount(8).)
IMPLEMENTATION NOTES
The directory entry format is defined in the file <sys/dirent.h>, which is also included by <dirent.h>. The format is represented by the
dirent structure, which contains the following entries:
ino_t d_fileno;
uint16_t d_reclen;
uint16_t d_namlen;
uint8_t d_type;
char d_name[MAXNAMLEN + 1];
These are:
1. The d_fileno entry is a number which is unique for each distinct file in the filesystem. Files that are linked by hard links (see
link(2)) have the same d_fileno. If d_fileno is zero, the entry refers to a deleted file. The type ino_t is defined in
<sys/types.h>.
2. The d_reclen entry is the length, in bytes, of the directory record.
3. The d_namlen entry specifies the length of the file name excluding the NUL. Thus the actual size of d_name may vary from 1 to
MAXNAMLEN + 1.
4. The d_type is the type of the file.
5. The d_name entry contains a NUL-terminated file name.
The following table lists the types available for d_type and the corresponding ones used in the struct stat (see stat(2)), respectively:
Dirent Stat Description
DT_UNKNOWN - unknown file type
DT_FIFO S_IFIFO named pipe
DT_CHR S_IFCHR character device
DT_DIR S_IFDIR directory
DT_BLK S_IFBLK block device
DT_REG S_IFREG regular file
DT_LNK S_IFLNK symbolic link
DT_SOCK S_IFSOCK UNIX domain socket
DT_WHT S_IFWHT dummy ``whiteout inode''
The DT_WHT type is internal to the implementation and should not be seen in normal user applications. The macros DTTOIF() and IFTODT() can
be used to convert from struct dirent types to struct stat types, and vice versa.
COMPATIBILITY
The IEEE Std 1003.1-2001 (``POSIX.1'') standard specifies only the fields d_ino and d_name. The remaining fields are available on many, but
not all systems.
Furthermore, the standard leaves the size of d_name as unspecified, mentioning only that the number of bytes preceding the terminating NUL
shall not exceed NAME_MAX. Because of this, and because the d_namlen field may not be present, a portable application should determine the
size of d_name by using strlen(3) instead of applying the sizeof() operator.
SEE ALSO getdents(2), fs(5), inode(5)HISTORY
A dir structure appeared in Version 7 AT&T UNIX. The dirent structure appeared in NetBSD 1.3.
BSD May 16, 2010 BSD