Hi,
My file has 2 fields and millions of lines.
variableStep chrom=Uextra span=25
201 0.5952
226 0.330693
251 0.121004
276 0.0736858
301 0.0646982
326 0.0736858
401 0.2952
426 0.230693
451 0.221004
476 0.2736858
Each field either has a... (6 Replies)
Hi, I need your help. I've got two files and i need to add 2nd line after occurrence of "Group No X" from data2.txt to 3rd line (after occurrence of "Group No X") from data1.txt. There is the same number of "Groups" in both files and the numbers of groups have the same pattern.
data1.txt
Group... (2 Replies)
I am trying to do some math, so that I can compare the average of six numbers to a variable.
Here is what it looks like (note that when I divide really big numbers, it isn't a real number):
$ tail -n 6 named.stats | awk -F\, '{print$1}'
1141804
1140566
1139429
1134210
1084682
895045... (3 Replies)
Hi I have this list
592;1;Z:\WB\DOCS;/FS3_100G/FILER112/BU/MPS/DOCS;;;;\\FILER112\BUMPS-DOCS\;580,116,544,878 Bytes;656,561 ;77,560
592;2;Z:\WB\FOCUS;/FS3_100G/FILER112/BU/MPS/FOCUS;;;;\\FILER112\BUMPS-FOCUS\;172,430 Bytes;6 ;0 ... (12 Replies)
Hello All,
I got a requirement when I was working with a file. Say the file has unloads of data from a table in the form
1|121|asda|434|thesi|2012|05|24|
1|343|unit|09|best|2012|11|5|
I was put into a scenario where I need the field count in all the lines in that file. It was simply... (6 Replies)
Based on input
ail,UTT,id1_0,COMBO,21,24,21,19,85
al,UTHAST,id1_0,COMBO,342,390,361,361,1454
and awk code as
awk -F, '{ K=0; for(i=NF; i>=(NF-4); i--) { K=K+$i; J=J+$i;} { print K } } END { for ( l in J ) printf("%s ",J); }'
I'm trying to add columns and lines in single line. line... (6 Replies)
Hi,
I am writing a script in awk trying to replace strings that are math expressions with their result.
For example, I have a file that looks like this:
5-1
32/8-1
4*12
17+1-3
I would like to get the following output:
4
3
48
15
I tried doing it the following way (using the "bc"... (8 Replies)
Hi
main object is categorize the difference of data-values (TLUFT02B - TLUFT12B).
herefor i read out data-files which are named
acording to the timeformat yyyymmddhhmm.
WR030B 266.48 Grad 0
WR050B 271.46 Grad 0
WR120B 268.11 Grad 0
WV030B 2.51 m/s ... (6 Replies)
Heya
There is a script which has presets stored in a tab-seperated file.
That script also has $help_text, which will be shown when called with invalid arguments or -h.
So i do need to have that file ready, so the help text can get the values out of the file, and print it with the $help_text.... (17 Replies)
Discussion started by: sea
17 Replies
LEARN ABOUT SUSE
vfs_readahead
VFS_READAHEAD(8) System Administration tools VFS_READAHEAD(8)NAME
vfs_readahead - pre-load the kernel buffer cache
SYNOPSIS
vfs objects = readahead
DESCRIPTION
This VFS module is part of the samba(7) suite.
This vfs_readahead VFS module detects read requests at multiples of a given offset (hex 0x80000 by default) and then tells the kernel via
either the readahead system call (on Linux) or the posix_fadvise system call to pre-fetch this data into the buffer cache.
This module is useful for Windows Vista clients reading data using the Windows Explorer program, which asynchronously does multiple file
read requests at offset boundaries of 0x80000 bytes.
The offset multiple used is given by the readahead:offset option, which defaults to 0x80000.
The size of the disk read operations performed by vfs_readahead is determined by the readahead:length option. By default this is set to the
same value as the readahead:offset option and if not set explicitly will use the current value of readahead:offset.
This module is stackable.
OPTIONS
readahead:offset = BYTES
The offset multiple that causes readahead to be requested of the kernel buffer cache.
readahead:length = BYTES
The number of bytes requested to be read into the kernel buffer cache on each readahead call.
The following suffixes may be applied to BYTES:
o K - BYTES is a number of kilobytes
o M - BYTES is a number of megabytes
o G - BYTES is a number of gigabytes
EXAMPLES
[hypothetical]
vfs objects = readahead
VERSION
This man page is correct for version 3.0.25 of the Samba suite.
AUTHOR
The original Samba software and related utilities were created by Andrew Tridgell. Samba is now developed by the Samba Team as an Open
Source project similar to the way the Linux kernel is developed.
Samba 3.5 06/18/2010 VFS_READAHEAD(8)