New to awk and need some help. I have a script that I would like to make more compact. I want to read a file and grab every field, from every record, except the last field. The records are variable length and have varying number of fields. A record will have at least two fields, but can have... (9 Replies)
As part of a bigger task, I had to read thru a file and separate records into various batches based on a field. Specifically, separate records based on the value in the batch field as defined below. The batch field left-justified numbers.
The datafile is here
> cat infile
12345 1 John Smith ... (5 Replies)
I have a file which is having fileds separtaed by delimiter.
Ex:
C;4498;qwa;cghy;;;;40;;222122
C;4498;sample;city;;;;34 2;;222123
C;4498;qwe;xcbv;;;;34-2;;222124
C;4498;jj;sffz;;;;41;;222120
C;4498;eert;qwq;;;;34 A;;222125
C;4498;jj;szxzzd;;;;34;;222127
out of these records I... (3 Replies)
So, I'm making a little awk script that generates a range-based histogram of a set of numbers. I've stumbled onto a strange thing. Toward the end of the process, I have this test:
if ( bindex < s )
"bindex" is the "index" of my "bin" (the array element that gets incremented whenever a... (2 Replies)
In a bash shell, I have to prefix a variable to two .CSV files File1.CSV and File2.CSV. One of the files has a header and the other one is with no header in the below format:
"value11","value12","value13","value14","value15","value16"
"value21","value22","value23","value24","value25","value26"... (7 Replies)
I am confused by the value of "currdisk->currangle" after adding operation. Initially the value of "currdisk->currangle" is 0.77500000000000013, but after adding operation, it's changed to "-nan(0x8000000000000)", Can anyone explain ? Thanks! The following is the occasion of gdb debugging.
3338 ... (8 Replies)
Hello,
I am trying to concatenate a string in a bash script like this:
runCmd="docker run -e \"IMAGE_NAME=$IMAGE_NAME\" "
env | grep "$ENV_SUFFIX" | while read line; do
envCmd="-e \"${line}\" "
runCmd=$runCmd$envCmd
echo $runCmd # here concatenation works fine
done
echo... (3 Replies)
How does one assign a variable, x to equal the number of records in a different file.
I have a simple command such as below:
awk -F "\t" '(NR>5) { if(($x == "0/0")) { print $0} }' a.txt > a1.txt
but I want x to equal the number of records in a different file, b.txt (10 Replies)
Hello ,
I have below files
a) File A
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<root xmlns="http://aaa/1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema" version="2.0">
<project name="source">
<mapping name="m_Source">
<parameter... (3 Replies)
Discussion started by: Pratik4891
3 Replies
LEARN ABOUT CENTOS
pmunpackeventrecords
PMUNPACKEVENTRECORDS(3) Library Functions Manual PMUNPACKEVENTRECORDS(3)NAME
pmUnpackEventRecords - unpack event records
C SYNOPSIS
#include <pcp/pmapi.h>
int pmUnpackEventRecords(pmValueSet *vsp, int idx, pmResult ***rap);
cc ... -lpcp
DESCRIPTION
Event records are encoded as a packed array of records within a pmResult using a container metric with a value of type PM_TYPE_EVENT.
pmUnpackEventRecords may be used to unpack event records from a metric value identified by vsp and idx. If the metric has a singular
value, idx should be 0, else the ordinal instance value identified by idx will be unpacked, i.e. vsp->vlist[idx]. The unpacked records are
turned into pmResult structures, one per event record and one metric per event parameter, and rap is returned as a pointer to an array
(NULL pointer terminated) of pointers to the pmResult structures.
Some control information from the packed event records is unpacked into additional ``anonymous'' metrics as follows:
1. If the event record has a non-zero flags value, then the corresponding pmResult will have the flags value encoded with the additional
metric event.flags that is inserted ahead of all other event parameters.
2. If the event record flag is set to PM_EVENT_FLAG_MISSED, then the corresponding pmResult will have one metric event.missed with a value
that equals the number of event records ``missed'' because either the PMDA could not keep up, or the PMAPI client did not collect the
event records fast enough.
pmUnpackEventRecords returns the number of pmResult structures as the return value, which is >= 0 for success.
rset and the associated pmResult structures may be freed using the convenience function pmFreeEventResult(3).
RETURN VALUE
The following errors are possible:
PM_ERR_CONV
The values associated with vsp are not encoded using the format PM_VAL_DPTR or PM_VAL_SPTR, or the flags at the head of the event
record has an unexpected value.
PM_ERR_INST
The value associated with vsp is not singular as expected.
PM_ERR_TYPE
vsp is not a value of type PM_TYPE_EVENT.
PM_ERR_TOOSMALL
The value identified by vbp is not legal because the value length is less than the minimum size, or the number of event records
encoded in the (value header) pmEventArray structure is negative, or the number of missed event records in the pmEventArray array
is negative.
PM_ERR_TOOBIG
Either vsp indicates more than one value is present (all the event records are expected to be packed in a single metric value),
or when unpacking the event records, the processing continues past the end of the enclosing value. Indicates corruption of the
packed event record.
PM_ERR_TYPE
Event parameters must have one of the arithmetic types, else PM_TYPE_AGGREGATE, PM_TYPE_STRING or PM_TYPE_AGGREGATE_STATIC.
other values < 0
refer to pmErrStr(3).
SEE ALSO PMAPI(3) and pmFreeEventResult(3).
Performance Co-Pilot PCP PMUNPACKEVENTRECORDS(3)