Here's my problem:
I have a laptop running Windows XP Pro with no internal CD or Floppy drives. I want to install Linux on it. I don't care about the Windows XP Pro installation, in fact I would like to install Linux over the entirety of the HD. However I cannot boot from any external CD drive... (1 Reply)
Hello. I am trying to convert occurrences of 'NULL' from a datafile. The 'NULL' occurences appears at this:
|NULL| NULL|NULL| NULL|NULL| NULL|NULL| NULL|
There should be 52 fields per line.
I would like any occurrence of | NULL| or |NULL| to appear as '||'
Currently I am using this sed... (2 Replies)
Hi,
I'm in the midst of writing a UNIX script that sftp's files to an external host and am stuck with a problem. The problem is that the files created on my server as a order number that correlates to a sequence of directories on the remote host which is where the file should be ftp'ed.
... (3 Replies)
Hi,
I am at a point in my script where I defined the number of the command line parameter I would like to set a variable equal to:
parameter_number=14
I would then like to set a variable equal to the correct parameter:
variable=$parameter_number
The issue here is that {} is required... (2 Replies)
So, first and foremost, I'm having issues with my internet connection. Periodically, the connection drops across the network. The fix is simple enough: restart the modem. However, this gets old when the connection dies out every hour.
I can hit my surfboard on 192.168.100.1, and navigate to a... (5 Replies)
Hi, I have a requirement in which i have to read a csv file and put data in certain set of variables:
File content:
VP-DTL-REC-CNT, ,854840,0.00,VP-PAID-AMT, ,0,32280885.17,VP-PAT-PAID-AMT, ,0,9930244.32,VP-PAID-REV-CNT, ,484927,0.00,VP-REJ-CNT, ,369913,0.00, , ,0,0.00, , ,0,0.00, , ,0,0.00, ,... (3 Replies)
Hi everyone..
I am new here, hello.. I hope this doesn't come across to you folks as a stupid question, I'm somewhat new to scripting :)
I'm seeking some help in finding a way to manipulate data output for every two characters - example:
numbers.lst contains the following output:... (3 Replies)
Hi folks!
My first post here.
I'm working on a script that retrieves a range of files from a list depending on a range of time.
UPDATE:
I've seen it could be difficult to read all this thing, so I'll make a summarize it..
How come I do this and take a result..
grep "..\:.." lista.new |... (4 Replies)
Hi All
I need to put some sed together for a task and its a bit advanced for me, so I thought I'd ask if anyone here could help.
I have a csv file with content like this -
"","abcde","",""
"'","abcde","",""
"","","","1234"
"'e'","","",""
I need to remove any single quotes that fall... (17 Replies)
Hi,
i am new to linux programming fraternity but looks like starting with a big thing...
yes..xml parsing (it is indeed tough for a beginner like me) so need your kind help...
The snippet of xml looks like:
<snapshot>
<tag1>
<key>1234</key>
<keytype>abcd</keytype>
</tag1>
<tag2>... (11 Replies)
Discussion started by: rookie2014
11 Replies
LEARN ABOUT REDHAT
pvm_upkfloat
UNPACK(3PVM) PVM Version 3.4 UNPACK(3PVM)NAME
pvm_unpack - Unpack the active message buffer into arrays of prescribed data type.
SYNOPSIS
C
int info = pvm_unpackf( const char *fmt, ... )
int info = pvm_upkbyte( char *xp, int nitem, int stride)
int info = pvm_upkcplx( float *cp, int nitem, int stride)
int info = pvm_upkdcplx( double *zp, int nitem, int stride)
int info = pvm_upkdouble( double *dp, int nitem, int stride)
int info = pvm_upkfloat( float *fp, int nitem, int stride)
int info = pvm_upkint( int *ip, int nitem, int stride)
int info = pvm_upkuint( unsigned int *ip, int nitem, int stride )
int info = pvm_upkushort( unsigned short *ip, int nitem, int stride )
int info = pvm_upkulong( unsigned long *ip, int nitem, int stride )
int info = pvm_upklong( long *ip, int nitem, int stride)
int info = pvm_upkshort( short *jp, int nitem, int stride)
int info = pvm_upkstr( char *sp )
Fortran
call pvmfunpack( what, xp, nitem, stride, info )
PARAMETERS
fmt Printf-like format expression specifying what to pack. (See discussion)
nitem The total number of items to be unpacked (not the number of bytes).
stride The stride to be used when packing the items. For example, if stride = 2 in pvm_upkcplx, then every other complex number will be
unpacked.
xp Pointer to the beginning of a block of bytes. Can be any data type, but must match the corresponding pack data type.
cp Complex array at least nitem*stride items long.
zp Double precision complex array at least nitem*stride items long.
dp Double precision real array at least nitem*stride items long.
fp Real array at least nitem*stride items long.
ip Integer array at least nitem*stride items long.
jp Integer*2 array at least nitem*stride items long.
sp Pointer to a null terminated character string.
what Integer specifying the type of data being unpacked.
what options
STRING 0 REAL4 4
BYTE1 1 COMPLEX8 5
INTEGER2 2 REAL8 6
INTEGER4 3 COMPLEX16 7
info Integer status code returned by the routine. Values less than zero indicate an error.
DESCRIPTION
Each of the pvm_upk* routines unpacks an array of the given data type from the active receive buffer. The arguments for each of the rou-
tines are a pointer to the array to be unpacked into, nitem which is the total number of items to unpack, and stride which is the stride to
use when unpacking.
An exception is pvm_upkstr() which by definition unpacks a NULL terminated character string and thus does not need nitem or stride argu-
ments. The Fortran routine pvmfunpack( STRING, ... ) expects nitem to be the number of characters in the string and stride to be 1.
If the unpacking is successful, info will be 0. If some error occurs then info will be < 0.
A single variable (not an array) can be unpacked by setting nitem = 1 and stride = 1.
The routine pvm_unpackf() uses a printf-like format expression to specify what and how to unpack data from the receive buffer. All vari-
ables are passed as addresses. A BNF-like description of the format syntax is:
format : null | init | format fmt
init : null | '%' '+'
fmt : '%' count stride modifiers fchar
fchar : 'c' | 'd' | 'f' | 'x' | 's'
count : null | [0-9]+ | '*'
stride : null | '.' ( [0-9]+ | '*' )
modifiers : null | modifiers mchar
mchar : 'h' | 'l' | 'u'
Formats:
+ means initsend - must match an int (how) in the param list.
c pack/unpack bytes
d integer
f float
x complex float
s string
Modifiers:
h short (int)
l long (int, float, complex float)
u unsigned (int)
Future extensions to the what argument in pvmfunpack will include 64 bit types when XDR encoding of these types is available. Meanwhile
users should be aware that precision can be lost when passing data from a 64 bit machine like a Cray to a 32 bit machine like a SPARCsta-
tion. As a mnemonic the what argument name includes the number of bytes of precision to expect. By setting encoding to PVMRAW (see
pvmfinitsend) data can be transferred between two 64 bit machines with full precision even if the PVM configuration is heterogeneous.
Messages should be unpacked exactly like they were packed to insure data integrity. Packing integers and unpacking them as floats will
often fail because a type encoding will have occurred transferring the data between heterogeneous hosts. Packing 10 integers and 100 floats
then trying to unpack only 3 integers and the 100 floats will also fail.
EXAMPLES
C:
info = pvm_recv( tid, msgtag );
info = pvm_upkstr( string );
info = pvm_upkint( &size, 1, 1 );
info = pvm_upkint( array, size, 1 );
info = pvm_upkdouble( matrix, size*size, 1 );
int count, *iarry;
double darry[4];
pvm_unpackf("%d", &count);
pvm_unpackf("%*d %4lf", count, iarry, darry);
Fortran:
CALL PVMFRECV( TID, MSGTAG, INFO );
CALL PVMFUNPACK( INTEGER4, NSIZE, 1, 1, INFO )
CALL PVMFUNPACK( STRING, STEPNAME, 8, 1, INFO )
CALL PVMFUNPACK( REAL4, A(5,1), NSIZE, NSIZE , INFO )
ERRORS
PvmNoData
Reading beyond the end of the receive buffer. Most likely cause is trying to unpack more items than were originally packed into the
buffer.
PvmBadMsg
The received message can not be decoded. Most likely because the hosts are heterogeneous and the user specified an incompatible
encoding. Try setting the encoding to PvmDataDefault (see pvm_mkbuf).
PvmNoBuf
There is no active receive buffer to unpack.
SEE ALSO pvm_pack(3PVM)pvm_send(3PVM), pvm_recv(3PVM), pvm_pkmesg(3PVM)
30 August, 1993 UNPACK(3PVM)