Hi All,
I have an input below.
I would want to print the 2nd to 5th term leaving the same number of spaces in between each term to be intact.
Here in the example, there are 4 spacings between term " ABC " and " 111 ", and i tried the below awk codes but they don;t work. Can anybody give me... (3 Replies)
I have an awk script like below
function abs(val) {
return val > 0 ? val : -val
}
# 1. Main input loop, executed for each line of input
BEGIN { RS = ORS = ">" }
{ if ( NF > 2 )
{
if ( abs( $1 - $(NF-2) ) < 40 ) { print }
}
}
The input file is something like... (2 Replies)
Hi,
I am having a file which is fix length and comma seperated. And I want to replace values for one column.
I am reading file line by line in variable $LINE and then replacing the string.
Problem is after changing value and writing new file temp5.txt, formating of original file is getting... (8 Replies)
Hi all,
I have a file with 3 columns separated by space. Each column has a heading. I want to sort according to the values in the 2nd column (ascending order).
Ex.
Name rank direction
goory 0.05 --+
laby 0.0006 ---
namy 0.31 -+-
....etc.
Output should be
Name rank direction
laby... (3 Replies)
Hi all,
Hello everyone, my first post here :). I tried to search the forum but I didn't find exactly what I was looking for...
I need to zip/tar files across entire filesystem which are more 3+ years old but leave folder structure intact. If the script locates tar/zip files they are more... (1 Reply)
Hi All,
I am trying write a simple command using AWK and SED to this but without any success.
Here is what I am using:
head -1 test1.txt>test2.txt|sed '1d;$d' test1.txt|awk '{print substr($0,0,(length($0)-2))}' >>test2.txt|tail -1 test1.txt>>test2.txt
Input:
Header
1234567
abcdefgh... (2 Replies)
Hi Unix Gurus,
I need to grep for a block that is between a start and end keyword and then in between I need to find and replace a keyword.
for eg: I need to search between Test = 000; and Test = 000; and find K9 and replace with M9
INPUT FILE
Define {
Replace = K9;
Test =... (6 Replies)
Hello friends,
I have a file with duplicate lines. I could eliminate duplicate lines by running
sort <file> |uniq >uniq_file and it works fine BUT it changes the order of the entries as it we did "sort".
I need to remove duplicates and also need to keep the order/sequence of entries. I... (1 Reply)
I have multiple (~80) files (some can be as big as 30GB of >1 billion of lines!) to grep on a pattern, and piped the match to a single file. I have a 96-core machine so that each grep job was sent to the background to speed up the search:
file1.tab
chr1A_part1 123241847 123241848... (6 Replies)
Discussion started by: yifangt
6 Replies
LEARN ABOUT CENTOS
trace-cmd-stop
TRACE-CMD-STOP(1)TRACE-CMD-STOP(1)NAME
trace-cmd-stop - stop the Ftrace Linux kernel tracer from writing to the ring buffer.
SYNOPSIS
trace-cmd stop
DESCRIPTION
The trace-cmd(1) stop is a complement to trace-cmd-start(1). This will disable Ftrace from writing to the ring buffer. This does not stop
the overhead that the tracing may incur. Only the updating of the ring buffer is disabled, the Ftrace tracing may still be inducing
overhead.
After stopping the trace, the trace-cmd-extract(1) may strip out the data from the ring buffer and create a trace.dat file. The Ftrace
pseudo file system may also be examined.
To disable the tracing completely to remove the overhead it causes, use trace-cmd-reset(1). But after a reset is performed, the data that
has been recorded is lost.
SEE ALSO trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-split(1),
trace-cmd-list(1), trace-cmd-listen(1)AUTHOR
Written by Steven Rostedt, <rostedt@goodmis.org[1]>
RESOURCES
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git
COPYING
Copyright (C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL).
NOTES
1. rostedt@goodmis.org
mailto:rostedt@goodmis.org
06/11/2014 TRACE-CMD-STOP(1)