Is there a command that sets a variable length?
I have a input of a variable length field but my output for that field needs to be set to 32 char.
Is there such a command?
I am on a sun box running ksh
Thanks (2 Replies)
Hi, I have to change a tab delimited file to a fixed length file. For text fields I need to left justify and NULL fill to the right and for number fields I need to right justify and zero fill to the left. If there are spaces between words in a text field I need to keep them as spaces. I am using... (14 Replies)
hello!
I have a file with fixed record length...
format:
123445asdfg 4343777 sfgg
I wanna convert it to
123445,asdfg ,4343,777 ,sfgg
is there any way to do it?
sed/grep/awk??
at the moment I use sed -e 's_ \(\)_,\1_g'
but it works only if there are spaces between... (16 Replies)
Newbie
Looking for a script to convert my input file to delimited text file. Not familier with AWK or shell programing. Below is sample record in my input file and the expected output format. My OS is HPUX 11.23.
Thanks in advance for your assistance.
tbtbs
input file:... (12 Replies)
Hi, all.
I need to convert a file tab delimited/variable length file in AIX to a fixed lenght file delimited by spaces. This is the input file:
10200002<tab>US$ COM<tab>16/12/2008<tab>2,3775<tab>2,3783
19300978<tab>EURO<tab>16/12/2008<tab>3,28523<tab>3,28657
And this is the expected... (2 Replies)
Hi
I need to be search a file of fixed length records and when I hit a particular record that match a search string, substitute a known position field
In the example file below
FHEAD000000000120090806143011
THEAD0000000002Y0000000012 P00000000000000001234
TTAIL0000000003... (0 Replies)
Very, very new to unix scripting and have a unique situation. I have a file of records that contain 3 records types:
(H)eader Records
(D)etail Records
(T)railer Records
The Detail records are 82 bytes in length which is perfect. The Header and Trailer records sometimes are 82 bytes in... (3 Replies)
Hi,
Can anyone help with a effective solution ?
I need to change a variable length text field (between 1 - 18 characters) to a fixed length text of 18 characters with the unused portion, at the end, filled with spaces.
The text field is actually field 10 of a .csv file however I could cut... (7 Replies)
I am new to awk and writing a script using awk. I have file containing fixed length records, I wish to extract 2 substring(each substring is padded with zeros on left e.g 000000003623) and add each substring respectively for every record in the file to get total sum of respective substring for all... (5 Replies)
Discussion started by: Devesh5683
5 Replies
LEARN ABOUT DEBIAN
cdb
cdb(5) File Formats Manual cdb(5)NAME
cdb - Constant DataBase file format
DESCRIPTION
A cdb database is a single file used to map `keys' to `values', having records of (key,value) pairs. File consists of 3 parts: toc (table
of contents), data and index (hash tables).
Toc has fixed length of 2048 bytes, containing 256 pointers to hash tables inside index sections. Every pointer consists of position of a
hash table in bytes from the beginning of a file, and a size of a hash table in entries, both are 4-bytes (32 bits) unsigned integers in
little-endian form. Hash table length may have zero length, meaning that corresponding hash table is empty.
Right after toc section, data section follows without any alingment. It consists of series of records, each is a key length, value (data)
length, key and value. Again, key and value length are 4-byte unsigned integers. Each next record follows previous without any special
alignment.
After data section, index (hash tables) section follows. It should be looked to in conjunction with toc section, where each of max 256
hash tables are defined. Index section consists of series of hash tables, with starting position and length defined in toc section. Every
hash table is a sequence of records each holds two numbers: key's hash value and record position inside data section (bytes from the begin-
ning of a file to first byte of key length starting data record). If record position is zero, then this is an empty hash table slot,
pointed to nowhere.
CDB hash function is
hv = ((hv << 5) + hv) ^ c
for every single c byte of a key, starting with hv = 5381.
Toc section indexed by (hv % 256), i.e. hash value modulo 256 (number of entries in toc section).
In order to find a record, one should: first, compute the hash value (hv) of a key. Second, look to hash table number hv modulo 256. If
it is empty, then there is no such key exists. If it is not empty, then third, loop by slots inside that hash table, starting from slot
with number hv divided by 256 modulo length of that table, or ((hv / 256) % htlen), searching for this hv in hash table. Stop search on
empty slot (if record position is zero) or when all slots was probed (note cyclic search, jumping from end to beginning of a table). When
hash value in question is found in hash table, look to key of corresponding record, comparing it with key in question. If them of the same
length and equals to each other, then record is found, overwise, repeat with next hash table slot. Note that there may be several records
with the same key.
SEE ALSO cdb(1), cdb(3).
AUTHOR
The tinycdb package written by Michael Tokarev <mjt@corpit.ru>, based on ideas and shares file format with original cdb library by Dan
Bernstein.
LICENSE
Public domain.
Apr, 2005 cdb(5)