Hello,
I need to insert a line (like a header) as the first line of a very huge file (about 3 ml rows). I am able to do it with sed, but redirecting the output and creating a new file takes quite some time. I was wondering if there was a more efficient way of doing it?
Any help would be... (3 Replies)
Hello ,
I'm trying to split a file which contains a single very long line.
My aim is to split this single line each 120 characters.
I tried with the sed command :
`cat ${MYPATH}/${FILE}|sed -e :a -e 's/^.\{1,120\}$/&\n/;ta' >{MYPATH}/${DEST}`
but when I wc -l the destination file it is... (2 Replies)
Hi,
I have a file a.txt having no delimiter.
I want to exclude the line which contains 435th character as 1 or 2 and redirect the rest of the lines to another file b.
Can you pls suggest how to do this in one liner awk.
Following is just one line of the input file a:-
120110116 ... (10 Replies)
I’m new to Linux script and not sure how to filter out bad records from huge flat files (over 1.3GB each). The delimiter is a semi colon “;”
Here is the sample of 5 lines in the file:
Name1;phone1;address1;city1;state1;zipcode1
Name2;phone2;address2;city2;state2;zipcode2;comment... (7 Replies)
Dear All,
Good Evening!!
I have a requirement to ftp a 220GB backup file to a remote backup server.
I wrote a script for this purpose.
But it takes more than 8 hours to transfer this file.
Is there any other method to do it in less time???
Thanks in Advance!!!
---------- Post updated... (5 Replies)
Hi Experts,
I had to edit (a particular value) in header line of a very huge file so for that i wanted to search & replace a particular value on a file which was of 24 GB in Size. I managed to do it but it took long time to complete. Can anyone please tell me how can we do it in a optimised... (7 Replies)
I have 2 files; one file (say, details.txt) contains the details of employees and another file (say, emp.txt) has some selected employee names. I am extracting employee details from details.txt by using emp.txt and the corresponding code is:
while read line
do
emp_name=`echo $line`
grep -e... (7 Replies)
I've input as ,
abcd|
ef
123456|
78|
90
Desired output as,
abcdef
1234567890
Anyone please give the solution. (5 Replies)
Discussion started by: jinixvimal
5 Replies
LEARN ABOUT LINUX
dat.conf
DAT.CONF(5)DAT.CONF(5)NAME
dat.conf - configuration file for static registration of user-level DAT rdma providers
DESCRIPTION
The DAT (direct access transport) architecture supports the use of multiple DAT providers within a single consumer application. Consumers
implicitly select a provider using the Interface Adapter name parameter passed to dat_ia_open().
The subsystem that maps Interface Adapter names to provider implementations is known as the DAT registry. When a consumer calls
dat_ia_open(), the appropriate provider is found and notified of the consumer's request to access the IA. After this point, all DAT API
calls acting on DAT objects are automatically directed to the appropriate provider entry points.
A persistent, administratively configurable database is used to store mappings from IA names to provider information. This provider infor-
mation includes: the file system path to the provider library object, version information, and thread safety information. The location and
format of the registry is platform dependent. This database is known as the Static Registry (SR) and is provided via entries in the
dat.conf file. The process of adding a provider entry is termed Static Registration.
Registry File Format
* All characters after # on a line are ignored (comments).
* Lines on which there are no characters other than whitespace
and comments are considered blank lines and are ignored.
* Non-blank lines must have seven whitespace separated fields.
These fields may contain whitespace if the field is quoted
with double quotes. Within fields quoated with double quotes,
the backslash or qoute are valid escape sequences:
* Each non-blank line will contain the following fields:
- The IA Name.
- The API version of the library:
[k|u]major.minor where "major" and "minor" are both integers
in decimal format. User-level examples: "u1.2", and "u2.0".
- Whether the library is thread-safe: [threadsafe|nonthreadsafe]
- Whether this is the default section: [default|nondefault]
- The library image, version included, to be loaded.
- The vendor id and version of DAPL provider: id.major.minor
- ia params, IA specific parameters - device name and port
- platform params, (not used)
Example netdev entries for OpenFabrics rdma_cm providers, both v1.2 and v2.0
OpenIB-cma u1.2 nonthreadsafe default libdaplcma.so.1 dapl.1.2 "ib0 0" ""
ofa-v2-ib0 u2.0 nonthreadsafe default libdaplofa.so.2 dapl.2.0 "ib0 0" ""
NOTE: The OpenFabrics providers use <ia_params> to specify the device with one of the following:
network address, network hostname, or netdev name; along with port number.
The OpenIB- and ofa-v2- IA names are unique mappings. Reserved for OpenFabrics providers.
The default location for this configuration file is /etc/dat.conf. The file location may be overridden with the environment variable
DAT_OVERRIDE=/your_own_directory/your_dat.conf.
SEE ALSO
25 March 2008 DAT.CONF(5)