The below code do not appened spaces as many as my required length. When i gave length as 285, it append spaces upto 251 only. When i use printf command it shows 285.
But when i write the output to a file, in that the length is only 251 but not 285.
Last edited by Amrutha24; 01-08-2013 at 12:45 AM..
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, 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 have a problem where I need to append few spaces(say 10 spaces) for each line in a file whose length is say(100 chars) and others leave as it is.
I tried to find the length of each line and then if the length is say 100 chars then tried to write those lines into another file and use a sed... (17 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)
Hello Everyone,
I am stuck with one issue while working on abstract flat file which i have to use as input and load data to table.
Input Data-
------ ------------------------ ---- -----------------
WFI001 Xxxxxx Control Work Item A Number of Records
------ ------------------------... (5 Replies)
Hello
I've question on the requirement I am working on.
We are getting a fixed length file with "33" characters long. We are processing that file loading into DB.
Now some times we are getting a file with "35" characters long. In this case I have to remove two characters (in 22,23... (14 Replies)
I have a fixed width file of length 53. when is try to get the lengh of the record of that file i get 2 different answers.
awk '{print length;exit}' <File_name>
The above code gives me length 50.
wc -L <File_name>
The above code gives me length 53.
Please clarify on... (2 Replies)
Hello to all,
I'm trying to format a file to have all lines with the same length (the length of the longest line) adding needed extra spaces at the end.
Currently I have the awk script below that adds one space the end of each that have a lenght lower than 35, but I don't know
how to add... (3 Replies)
Hi Team,
I have a different length records in my text file.I would like to make all the records with same length. I want to check the maximum lenth and all other records make the same length
It's urgent request.
Thanks in Advance (2 Replies)
Discussion started by: Anthuvan
2 Replies
LEARN ABOUT NETBSD
ubc_alloc
UBC(9) BSD Kernel Developer's Manual UBC(9)NAME
ubc -- unified buffer cache
SYNOPSIS
#include <uvm/uvm.h>
void *
ubc_alloc(struct uvm_object *uobj, voff_t offset, vsize_t *lenp, int advice, int flags);
void
ubc_release(void *va, int flags);
int
ubc_uiomove(struct uvm_object *uobj, struct uio *uio, vsize_t todo, int advice, int flags);
void
ubc_purge(struct uvm_object *uobj);
DESCRIPTION
ubc_alloc() creates a kernel mapping of uobj starting at offset offset. The desired length of the mapping is pointed to by lenp, but the
actual mapping may be smaller than this. lenp is updated to contain the actual length mapped. advice is the access pattern hint, which must
be one of
UVM_ADV_NORMAL No hint
UVM_ADV_RANDOM Random access hint
UVM_ADV_SEQUENTIAL Sequential access hint (from lower offset to higher offset)
The possible flags are
UBC_READ Mapping will be accessed for read.
UBC_WRITE Mapping will be accessed for write.
UBC_FAULTBUSY Fault in window's pages already during mapping operation. Makes sense only for write.
Once the mapping is created, it must be accessed only by methods that can handle faults, such as uiomove() or kcopy(). Page faults on the
mapping will result in the object's pager method being called to resolve the fault.
ubc_release() frees the mapping at va for reuse. The mapping may be cached to speed future accesses to the same region of the object. The
flags can be any of
UBC_UNMAP Do not cache mapping.
ubc_uiomove() allocates an UBC memory window, performs I/O on it and unmaps the window. The advice parameter takes the same values as the
respective parameter in ubc_alloc() and the flags parameter takes the same arguments as ubc_alloc() and ubc_release(). Additionally, the
flag UBC_PARTIALOK can be provided to indicate that it is acceptable to return if an error occurs mid-transfer.
ubc_purge() disassociates all UBC structures from an empty UVM object, specified by uobj.
CODE REFERENCES
The ubc subsystem is implemented within the file sys/uvm/uvm_bio.c.
SEE ALSO pmap(9), uiomove(9), uvm(9), vnode(9), vnodeops(9)
Chuck Silvers, "UBC: An Efficient Unified I/O and Memory Caching Subsystem for NetBSD", Proceedings of the FREENIX Track: 2000 USENIX Annual
Technical Conference, USENIX Association, http://www.usenix.org/event/usenix2000/freenix/full_papers/silvers/silvers.pdf, 285-290, June
18-23, 2000.
HISTORY
UBC first appeared in NetBSD 1.6.
AUTHORS
Chuck Silvers <chuq@chuq.com> designed and implemented the UBC part of UVM, which uses UVM pages to cache vnode data rather than the tradi-
tional buffer cache buffers.
BSD June 14, 2011 BSD