Hello,
I have a text file with n lines in the following format (9 column fields):
Example:
contig00012 149606 G C 49 68 60 18 c$cccccacccccccccc^c
I need to count the number of lower-case and upper-case occurences in column 9, respectively, of the... (3 Replies)
I want to sort lines by how many times a string occurs in each line (the most times first).
I know how to do this in two passes (add a count field in the first pass then sort on it in the second pass).
However, can it be done more optimally with a single AWK command? My AWK has improved... (11 Replies)
I get a file which has all its content in a single row.
The file contains xml data containing 3000 records, but all in a single row, making it difficult for Unix to Process the file.
I decided to insert a new line character at all occurrences of a particular string in this file (say replacing... (4 Replies)
Hi everyone,
I am working on fetchmail + procmail to filter mails and I am having problem with parsing a long line in the body of the email.
Could anyone help me construct a reg exp for this string below. It needs to match exactly as this string.
GetRyt... (4 Replies)
I was trying to do some experiment with "sed".
I want to find the filenames which are three characters. So, this is what I have done to search for it, using sed.
sed -n -e '/^\{3\}$/p' test
This returns the correct output for characters. But if I make change, let's say i create 2 more... (4 Replies)
Hello All,
I got a requirement when I was working with a file. Say the file has unloads of data from a table in the form
1|121|asda|434|thesi|2012|05|24|
1|343|unit|09|best|2012|11|5|
I was put into a scenario where I need the field count in all the lines in that file. It was simply... (6 Replies)
Hello,
I do have folders containing having funny strings in their names and one space.
First, I do remove the funny strings and replace the space by an underscore.
find . -name '* *' | while read file;
do
target=`echo "$file" | sed 's/... (2 Replies)
Hi,
Anyone can help using SED searches a character string for a specified delimiter character, and returns a leading or trailing space/blank.
Text file :
"1"|"ExternalClassDEA519CF5"|"Art1"
"2"|"ExternalClass563EA516C"|"Art3"
"3"|"ExternalClass305ED16B8"|"Art9"
...
...
... (2 Replies)
I will appreciate if you help me here in this script in Solaris Enviroment.
Scenario:
i have 2 files :
1) /tmp/TRANSACTIONS_DAILY_20180730.txt:
201807300000000004
201807300000000005
201807300000000006
201807300000000007
201807300000000008
2)... (10 Replies)
Discussion started by: teokon90
10 Replies
LEARN ABOUT ULTRIX
dir
dir(5) File Formats Manual dir(5)Name
dir - format of directories
Syntax
#include <sys/types.h>
#include <sys/dir.h>
Description
A directory behaves exactly like an ordinary file, except that no user may write into a directory. The fact that a file is a directory is
indicated by a bit in the flag word of its i-node entry. For further information, see The structure of a directory entry is given in the
include file.
A directory consists of some number of blocks of DIRBLKSIZ bytes, where DIRBLKSIZ is chosen such that it can be transferred to disk in a
single atomic operation (for example, 512 bytes on most machines).
Each DIRBLKSIZ byte block contains some number of directory entry structures, which are of variable length. Each directory entry has a
struct direct at the front of it, containing its inode number, the length of the entry, and the length of the name contained in the entry.
These are followed by the name padded to a 4-byte boundary with null bytes. All names are guaranteed null terminated. The maximum length
of a name in a directory is MAXNAMLEN.
The macro DIRSIZ(dp) gives the amount of space required to represent a directory entry. Free space in a directory is represented by
entries which have dp->d_reclen > DIRSIZ(dp). All DIRBLKSIZ bytes in a directory block are claimed by the directory entries. This action
usually results in the last entry in a directory having a large
dp->d_reclen. When entries are deleted from a directory, the space is returned to the previous entry in the same directory block by
increasing its dp->d_reclen. If the first entry of directory block is free, then its dp->d_ino is set to 0. Entries other than the first
in a directory do not normally have dp->d_ino set to 0.
#ifdef KERNEL
#define DIRBLKSIZ DEV_BSIZE
#else
#define DIRBLKSIZ 512
#endif
#define MAXNAMLEN 255
The DIRSIZ macro gives the minimum record length that will hold the directory entry. This requires the amount of space in struct direct
without the d_name field, plus enough space for the name with a terminating null byte (dp->d_namlen+1), rounded up to a 4-byte boundary.
#undef DIRSIZ
#define DIRSIZ(dp)
((sizeof (struct direct) - (MAXNAMLEN+1)) +
(((dp)->d_namlen+1 + 3) &~ 3))
struct direct {
u_long d_ino;
short d_reclen;
short d_namlen;
char d_name[MAXNAMLEN + 1];
/* typically shorter */
};
struct _dirdesc {
int dd_fd;
long dd_loc;
long dd_size;
char dd_buf[DIRBLKSIZ];
};
By convention, the first two entries in each directory are for dot (.) and dot dot (..). The first is an entry for the directory itself.
The second is for the parent directory. The meaning of `..' is modified for the root directory of the master file system ("/"), where dot
dot has the same meaning as dot.
See Alsofs(5)dir(5)