thnx, the %5d works, it makes it right justified as default, anyway to make the other two left justified?
damn man pages why couldn't they make them easier to understand :S
hi, i would like to extract the header and put it in a variable, then use printf to output the variable, but i keep on getting errors...please tell me if my format is incorrect.
HDR = "`ps -e -o user,pid,ppid,pcpu,stime,etime,time,comm | head -n 1`"
printf (%s, $HDR);
thanks! (3 Replies)
Hi all,
My simple AWK code does C = A - B
If C can be a negative number, how awk printf formating handles it using string format specifier.
Thanks in advance
Kanu
:confused: (9 Replies)
Hi All,
I have data in the following format.
Australia,"CISCO877-SEC-K9
CISCO1841-ADSL
CISCO2821"
Australia,"CISCO877-SEC-K9
CISCO1841-ADSL
CISCO2821"
Austria,"CISCO871-K9
CISCO1841
CISCO1841-SEC/K9
CISCO1812/K9"
Austria,"CISCO1841-SEC/K9
CISCO1812/K9" (3 Replies)
Hi
I'm using awk to manipulate the data in the 6th field of the file xxx_yyy.hrv.
The sample data that is available in this field is given below
220731.7100000000000000
When i tried using this command
cat xxx_yyy.hrv | awk '{printf("%23.16f\n",$6*-1)}'
I get the output as... (4 Replies)
Hi,
I am beginner. have almost one text file which contains 6000 lines. every line is in different format.so need to rearrange in single format.
Ex: .thde.adgtmk.802ati
thde.kghijk..567ati
..thde.kghijk..458ati
thde.ertyui.456.567.789ati
thde.awse.dati
Rules:... (2 Replies)
Hi,
I have the following text file:
8 T1mapping_flip02 ok 128 108 30 1 665000-000008-000001.dcm
9 T1mapping_flip05 ok 128 108 30 1 665000-000009-000001.dcm
10 T1mapping_flip10 ok 128 108 30 1 665000-000010-000001.dcm
11 T1mapping_flip15 ok 128 108 30... (2 Replies)
Hi again:
I have a log file wihch has always this format:
DATA line 1
DATA line 2
^^^^^
| Spaces or TABs
The first line always begins from the start, but the second begins with spaces or TABs,
Question:
How can I add the second line to the first one?
I mean this:
DATA... (6 Replies)
Hi
my awk variable $0 contains the below data
Input file
000001 The Data
000002* The line 2
000003* The line3
output file Req
000001* The Data
000002** The line 2
000003** The line3
one * at column seven needs to be appended to the input lines, (5 Replies)
Hi all,
i have written this script:
awk -F';' '
BEGIN {
printf "\n"
printf "\n"
printf "\n"
printf "----------------------------------------------\n"
print " For test "
printf "----------------------------------------------\n"
test_200 = 0
test_300 = 0
test_500 = 0
test_1000 = 0... (11 Replies)
Hello
Here is an easy one
Data file
12345 (tab) Some text (tab) 53.432
23456 (tab) Some longer text (tab) 933.422
34567 (tab) Some different text (tab) 29.309
I need to awk these three tab-delimited columns so that the first two are unchanged (unformatted) and the third shows two decimal... (1 Reply)
Discussion started by: palex
1 Replies
LEARN ABOUT FREEBSD
ktr
KTR(9) BSD Kernel Developer's Manual KTR(9)NAME
CTR0, CTR1, CTR2, CTR3, CTR4, CTR5 -- kernel tracing facility
SYNOPSIS
#include <sys/param.h>
#include <sys/ktr.h>
extern int ktr_cpumask;
extern int ktr_entries;
extern int ktr_extend;
extern int ktr_mask;
extern int ktr_verbose;
extern struct ktr_entry ktr_buf[];
void
CTR0(u_int mask, char *format);
void
CTR1(u_int mask, char *format, arg1);
void
CTR2(u_int mask, char *format, arg1, arg2);
void
CTR3(u_int mask, char *format, arg1, arg2, arg3);
void
CTR4(u_int mask, char *format, arg1, arg2, arg3, arg4);
void
CTR5(u_int mask, char *format, arg1, arg2, arg3, arg4, arg5);
void
CTR6(u_int mask, char *format, arg1, arg2, arg3, arg4, arg5, arg6);
DESCRIPTION
KTR provides a circular buffer of events that can be logged in a printf(9) style fashion. These events can then be dumped with ddb(4),
gdb(1) or ktrdump(8).
Events are created and logged in the kernel via the CTRx macros. The first parameter is a mask of event types (KTR_*) defined in
<sys/ktr.h>. The event will be logged only if any of the event types specified in mask are enabled in the global event mask stored in
ktr_mask. The format argument is a printf(9) style format string used to build the text of the event log message. Following the format
string are zero to five arguments referenced by format. Each event is logged with a file name and source line number of the originating CTR
call, and a timestamp in addition to the log message.
The event is stored in the circular buffer with supplied arguments as is, and formatting is done at the dump time. Do not use pointers to
the objects with limited lifetime, for instance, strings, because the pointer may become invalid when buffer is printed.
Note that the different macros differ only in the number of arguments each one takes, as indicated by its name.
The ktr_entries variable contains the number of entries in the ktr_buf array. These variables are mostly useful for post-mortem crash dump
tools to locate the base of the circular trace buffer and its length.
The ktr_mask variable contains the run time mask of events to log.
The CPU event mask is stored in the ktr_cpumask variable.
The ktr_verbose variable stores the verbose flag that controls whether events are logged to the console in addition to the event buffer.
EXAMPLES
This example demonstrates the use of tracepoints at the KTR_PROC logging level.
void
mi_switch()
{
...
/*
* Pick a new current process and record its start time.
*/
...
CTR3(KTR_PROC, "mi_switch: old proc %p (pid %d)", p, p->p_pid);
...
cpu_switch();
...
CTR3(KTR_PROC, "mi_switch: new proc %p (pid %d)", p, p->p_pid);
...
}
SEE ALSO ktr(4), ktrdump(8)HISTORY
The KTR kernel tracing facility first appeared in BSD/OS 3.0 and was imported into FreeBSD 5.0.
BUGS
Currently there is one global buffer shared among all CPUs. It might be profitable at some point in time to use per-CPU buffers instead so
that if one CPU halts or starts spinning, then the log messages it emitted just prior to halting or spinning will not be drowned out by
events from the other CPUs.
The arguments given in CTRx() macros are stored as u_long, so do not pass arguments larger than size of an u_long type. For example passing
64bit arguments on 32bit architectures will give incorrect results.
BSD November 30, 2008 BSD