Dear All,
I am trying to write an script to calculate geometric centre of selected residues of a protein structure. Say I have a PDB file (a text containing the x, y, and z coordinates of atoms of a protein). I want to extract the X coordinates of the atoms belonging to the interested residues... (2 Replies)
hello all how can i get the type of variable in perl like
typeof(var); in javascript for instance ? to know if the variable is int or string ? (2 Replies)
Hello experts,
How we can find out,that what is type of a scalar variable? i.e a scalar var contain a number or a string.
Thanks in advance. (8 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)
I have a question about the type of this variable
checkU= sudo cat /etc/passwd: grep $uname: wc -l
I write a script to check the existent of username that get from the keyboard. If there is no username,it will create the username else it show the 'Duplicate name" message.
The problem is it... (4 Replies)
Hi,
I want to start MY_PROGRAM in a bash script with additional parameters given in the CONFIGURATION_ARRAY.
IFS="'"
CONFIGURATION_ARRAY=( '-N 0 -m 0' '-N 0 -m 1' )
for configuration in ${CONFIGURATION_ARRAY}
do
//DEBUG
N=${configuration%-*} //-N 0
M=-${configuration##*-} //-m 0... (5 Replies)
Trying to find out whether there is a limit for the number of records that can be stored in a variable I set up this small script:
#!/usr/bin/ksh
for ((i = 1; i < 21; i++))
do
n=$(($i*100))
echo "Trying $n records:"
recs=$(head -$n error.log)
echo "$recs" | wc
done ... (9 Replies)
I'm converting a binary file to ASCII using c code.
The folllowing block of code prints correct double value 00000.000000000 on HPUNIX platform.
longi double;
/* C79 - Price Per Minute */
memcpy(&longi,&rbuff,8);
fprintf(wfp,"%015.9f ",longi);
prints : 00000.000000000
... (6 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)
Discussion started by: czabak
3 Replies
LEARN ABOUT FREEBSD
cpuctl
CPUCTL(4) BSD Kernel Interfaces Manual CPUCTL(4)NAME
cpuctl -- cpuctl pseudo device
SYNOPSIS
To compile this driver into the kernel, place the following lines in your kernel configuration file:
device cpuctl
Alternatively, to load the driver as a module at boot time, place the following in loader.conf(5):
cpuctl_load="YES"
DESCRIPTION
The special device /dev/cpuctl presents interface to the system CPU. It provides functionality to retrieve CPUID information, read/write
machine specific registers (MSR) and perform CPU firmware updates.
For each CPU present in the system, the special device /dev/cpuctl%d with the appropriate index will be created. For multicore CPUs such a
special device will be created for each core.
Currently, only i386 and amd64 processors are supported.
IOCTL INTERFACE
All of the supported operations are invoked using the ioctl(2) system call. Currently, the following ioctls are defined:
CPUCTL_RDMSR cpuctl_msr_args_t *args
CPUCTL_WRMSR cpuctl_msr_args_t *args
Read/write CPU machine specific register. The cpuctl_msr_args_t structure is defined in <sys/cpuctl.h> as:
typedef struct {
int msr; /* MSR to read */
uint64_t data;
} cpuctl_msr_args_t;
CPUCTL_MSRSBIT cpuctl_msr_args_t *args
CPUCTL_MSRCBIT cpuctl_msr_args_t *args
Set/clear MSR bits according to the mask given in the data field.
CPUCTL_CPUID cpuctl_cpuid_args_t *args
Retrieve CPUID information. Arguments are supplied in the following structure:
typedef struct {
int level; /* CPUID level */
uint32_t data[4];
} cpuctl_cpuid_args_t;
It is equivalent to the CPUCTL_CPUID_COUNT request with level_type set to 0.
CPUCTL_CPUID_COUNT cpuctl_cpuid_count_args_t *args
Retrieve CPUID information. Arguments are supplied in the following structure:
typedef struct {
int level; /* CPUID level */
int level_type; /* CPUID level type */
uint32_t data[4];
} cpuctl_cpuid_count_args_t;
The level field indicates the CPUID level to retrieve, it is loaded into the %eax register before the CPUID instruction
is executed, The level_type field indicates the CPUID level type to retrieve, it is loaded into the %ecx register.
The data field is used to store the received CPUID data. That is, data[0] contains the value of %eax register after the
CPUID instruction is executed, data[1] is for %ebx, data[2] for %ecx, and data[3] for %edx.
CPUCTL_UPDATE cpuctl_update_args_t *args
Update CPU firmware (microcode). The structure is defined in <sys/cpuctl.h> as:
typedef struct {
void *data;
size_t size;
} cpuctl_update_args_t;
The data field should point to the firmware image of size size.
For additional information refer to cpuctl.h.
RETURN VALUES
[ENXIO] The operation requested is not supported by the device (e.g., unsupported architecture or the CPU is disabled).
[EINVAL] Incorrect request was supplied, or microcode image is not correct.
[ENOMEM] No physical memory was available to complete the request.
[EFAULT] The firmware image address points outside the process address space.
FILES
/dev/cpuctl
SEE ALSO hwpmc(4), cpucontrol(8)HISTORY
The cpuctl driver first appeared in FreeBSD 7.2.
AUTHORS
The cpuctl module and this manual page were written by Stanislav Sedov <stas@FreeBSD.org>.
BUGS
Yes, probably, report if any.
BSD June 20, 2014 BSD