I've got 30,000 files to process using
The re is in the header of the xml files. Is there a way to grab just the header the pattern match instead of reading the whole files?
I grepped for a string from a directory of very large files. This took quite a long time (not a problem). When I grepped for a different string from the same files immediately after, the output was MUCH quicker.
My question is, does anybody know why the second grep was so much quicker than the... (1 Reply)
Hello,
I have a Supermicro server with a P4SCI mother board running Debian Sarge 3.1. This is the "dmidecode" output related to RAM info:
RAM speed information is incomplete.. "Current Speed: Unknown", is there anyway/soft to get the speed of installed RAM modules? thanks!!
Regards :)... (0 Replies)
I am doing "ps -f" to see my process.
but I get lines that one of it represents the ps command itself.
I want to grep it out using -v flag, but than I get another process that belongs to the GREP itself :
I would like to exclude
# ps -f
UID PID PPID C STIME TTY TIME CMD... (2 Replies)
Hello
Ive written 2 programs in shell and I need to compare their speed (Compile) against one another.
what methods could I go about doing this?
Is there a feature in shell do accommodate this? (2 Replies)
i want to search in the current directory all the files that contain one word for example "hello"
i want to achieve it with the grep command but not with the grep * (2 Replies)
I analysed disk performance with blktrace and get some data:
read:
8,3 4 2141 2.882115217 3342 Q R 195732187 + 32
8,3 4 2142 2.882116411 3342 G R 195732187 + 32
8,3 4 2144 2.882117647 3342 I R 195732187 + 32
8,3 4 2145 ... (1 Reply)
hi
i'm greping the files with sepefic keyword, where the file is of too big. Assume there are 10 days log file each of more than 200mb. i've to grep all those files with a specific keywords.
for example,
1. i'll grep for error message
2. after the i'll do one more grep for keyword... (4 Replies)
Hi,
I have to grep string from 20 - 30 files each carries 200 - 300 MB size and append to the
file. How to speed the
grepping time.
cat catalina.out_2012_01_01 | grep "xxxxx" >> backup.txt
PLZ, Suggest me,
Regards,
Nanthagopal A (5 Replies)
Hi,
file1.txt
AAA
BBB
CCC
DDD
file2.txt
abc|AAA|AAAabcbcs|fnwufnq
bca|nwruqf|AAA|fwfwwefwef
fmimwe|BBB|fnqwufw|wufbqw
wcdbi|CCC|wefnwin|wfwwf
DDD|wabvfav|wqef|fwbwqfwfe
i need the count of rows of file1.txt present in the file2.txt
required output:
AAA 2 (10 Replies)
Hello,
I am running below command as root user
#nodetool cfstats tests | grep "Memtable switch count"
Memtable switch count: 12
Where as when I try to run same command as another user it gives different result.
#su -l zabbix -s /bin/bash -c "nodetool cfstats tests | grep "Memtable switch... (10 Replies)
Discussion started by: Pushpraj
10 Replies
LEARN ABOUT DEBIAN
rrddump
RRDDUMP(1) rrdtool RRDDUMP(1)NAME
rrddump - dump the contents of an RRD to XML format
SYNOPSIS
rrdtool dump filename.rrd [filename.xml] [--header|-h {none,xsd,dtd}] [--no-header] [--daemon address] > filename.xml
DESCRIPTION
The dump function writes the contents of an RRD in human readable (?) XML format to a file or to stdout. This format can be read by
rrdrestore. Together they allow you to transfer your files from one computer architecture to another as well to manipulate the contents of
an RRD file in a somewhat more convenient manner.
filename.rrd
The name of the RRD you want to dump.
filename.xml
The (optional) filename that you want to write the XML output to. If not specified, the XML will be printed to stdout.
--header|-h {none,xsd,dtd}
By default RRDtool will add a dtd header to the xml file. Here you can customize this to and xsd header or no header at all.
--no-header
A shortcut for --header=none.
If you want to restore the dump with RRDtool 1.2 you should use the --no-header option since 1.2 can not deal with xml headers.
--daemon address
Address of the rrdcached daemon. If specified, a "flush" command is sent to the server before reading the RRD files. This allows
rrdtool to return fresh data even if the daemon is configured to cache values for a long time. For a list of accepted formats, see
the -l option in the rrdcached manual.
rrdtool dump --daemon unix:/var/run/rrdcached.sock /var/lib/rrd/foo.rrd
EXAMPLES
To transfer an RRD between architectures, follow these steps:
1. On the same system where the RRD was created, use rrdtool dump to export the data to XML format.
2. Transfer the XML dump to the target system.
3. Run rrdtool restore to create a new RRD from the XML dump. See rrdrestore for details.
ENVIRONMENT VARIABLES
The following environment variables may be used to change the behavior of "rrdtool dump":
RRDCACHED_ADDRESS
If this environment variable is set it will have the same effect as specifying the "--daemon" option on the command line. If both are
present, the command line argument takes precedence.
AUTHOR
Tobias Oetiker <tobi@oetiker.ch>
1.4.7 2009-10-14 RRDDUMP(1)