1 . Thanks everyone who read the post first.
2 . I have a log file which size is 143M , I can not use vi open it .I can not use xedit open it too.
How to view it ?
If I want to view 200-300 ,how can I implement it
3 . Thanks (3 Replies)
Hi all,
I'm new to shell scripting.
I want to copy initial few lines(say first 10 lines) from a file to another file.
There is no "head" command in our embedded system.
sed & awk is there which I believe will do that, but I dont know how to.
This is linux 2.6 (embedded)
So please help me.... (5 Replies)
I have a command which prints #lines after and before the search string in the huge file
nawk 'c-->0;$0~s{if(b)for(c=b+1;c>1;c--)print r;print;c=a}b{r=$0}' b=0 a=10 s="STRING1" FILE
The file is 5 gig big.
It works great and prints 10 lines after the lines which contains search string in... (8 Replies)
Hi,
I have a big (2.7 GB) text file. Each lines has '|' saperator to saperate each columns.
I want to delete those lines which has text like '|0|0|0|0|0'
I tried:
sed '/|0|0|0|0|0/d' test.txt
Unfortunately, it scans the file but does nothing.
file content sample:... (4 Replies)
Hi Guys,
I have an awk script that would search the input file for line that starts with a number 3 and copies into a new text file.
I want to extend this script to find the lines that either starts with 3 or a or b and copy all those lines into the new file.
Here is what I have so far:... (1 Reply)
Hi,
I need a unix command to delete first n (say 100) lines from a log file. I need to delete some lines from the file without using any temporary file. I found sed -i is an useful command for this but its not supported in my environment( AIX 6.1 ). File size is approx 100MB.
Thanks in... (18 Replies)
Requirement:
When I do ls -ltr /home/data/orders I get a huge list of files, I need to copy that last 50 to another directory say /home/work/ later, I will do my ETL process and then again I need to copy from 51 to 100 and so on.
What is the command to copy files specifying 1 to 50... (5 Replies)
Hi All,
I am trying to get some lines from a file i did it with while-do-loop. since the files are huge it is taking much time. now i want to make it faster.
The requirement is the file will be having 1 million lines.
The format is like below.
##transaction, , , ,blah, blah... (38 Replies)
OS : RHEL 7.2
Shell : bash
I have a file which has lines like below
I want to copy from 2nd line to the 6th line and copy(redirect) those lines to another file.
$ cat patterns.txt
hello world
hello asia
hello europe
hello africa
hello america
hello antartica
hello... (9 Replies)
Discussion started by: omega3
9 Replies
LEARN ABOUT CENTOS
x86_energy_perf_policy
X86_ENERGY_PERF_POLICY(8) System Manager's Manual X86_ENERGY_PERF_POLICY(8)NAME
x86_energy_perf_policy - read or write MSR_IA32_ENERGY_PERF_BIAS
SYNOPSIS
x86_energy_perf_policy [-c cpu] [-v] -r
x86_energy_perf_policy [-c cpu] [-v] 'performance'
x86_energy_perf_policy [-c cpu] [-v] 'normal'
x86_energy_perf_policy [-c cpu] [-v] 'powersave'
x86_energy_perf_policy [-c cpu] [-v] n
DESCRIPTION
x86_energy_perf_policy allows software to convey its policy for the relative importance of performance versus energy savings to the proces-
sor.
The processor uses this information in model-specific ways when it must select trade-offs between performance and energy efficiency.
This policy hint does not supersede Processor Performance states (P-states) or CPU Idle power states (C-states), but allows software to
have influence where it would otherwise be unable to express a preference.
For example, this setting may tell the hardware how aggressively or conservatively to control frequency in the "turbo range" above the
explicitly OS-controlled P-state frequency range. It may also tell the hardware how aggressively is should enter the OS requested C-
states.
Support for this feature is indicated by CPUID.06H.ECX.bit3 per the Intel Architectures Software Developer's Manual.
Options
-c limits operation to a single CPU. The default is to operate on all CPUs. Note that MSR_IA32_ENERGY_PERF_BIAS is defined per logical
processor, but that the initial implementations of the MSR were shared among all processors in each package.
-v increases verbosity. By default x86_energy_perf_policy is silent.
-r is for "read-only" mode - the unchanged state is read and displayed.
performance Set a policy where performance is paramount. The processor will be unwilling to sacrifice any performance for the sake of
energy saving. This is the hardware default.
normal Set a policy with a normal balance between performance and energy efficiency. The processor will tolerate minor performance compro-
mise for potentially significant energy savings. This reasonable default for most desktops and servers.
powersave Set a policy where the processor can accept a measurable performance hit to maximize energy efficiency.
n Set MSR_IA32_ENERGY_PERF_BIAS to the specified number. The range of valid numbers is 0-15, where 0 is maximum performance and 15 is max-
imum energy efficiency.
NOTES
x86_energy_perf_policy runs only as root.
FILES
/dev/cpu/*/msr
SEE ALSO msr(4)AUTHORS
Written by Len Brown <len.brown@intel.com>
X86_ENERGY_PERF_POLICY(8)