10-07-2013
If you show what you're doing right now, maybe we can speed it up.
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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)
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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:
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3. UNIX for Advanced & Expert Users
I am doing "ps -f" to see my process.
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i want to search in the current directory all the files that contain one word for example "hello"
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6. Filesystems, Disks and Memory
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
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7. Shell Programming and Scripting
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.
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8. Shell Programming and Scripting
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)
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9. Shell Programming and Scripting
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)
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10. Shell Programming and Scripting
Hello,
I am running below command as root user
#nodetool cfstats tests | grep "Memtable switch count"
Memtable switch count: 12
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LEARN ABOUT CENTOS
xmlstarlet
XMLSTARLET(1) xmlstarlet Manual XMLSTARLET(1)
NAME
xmlstarlet - command line XML/XSLT toolkit
SYNOPSIS
xmlstarlet [<options>] [<command>] [<cmd-options>]
INTRODUCTION
XMLStarlet is a set of command line utilities (tools) which can be used to transform, query, validate, and edit XML documents and files us-
ing simple set of shell commands in similar way it is done for plain text files using UNIX grep, sed, awk, diff, patch, join, etc commands.
This set of command line utilities can be used by those who deal with many XML documents on UNIX shell command prompt as well as for auto-
mated XML processing with shell scripts.
OPTIONS
--version
Display the version of xmlstarlet.
--help Display help.
COMMANDS
Type: xmlstarlet <command> --help <ENTER> for command help
Available commands include:
ed (or edit)
Edit/update XML document(s).
sel (or select)
Select data or query XML document(s) (XPATH, etc).
tr (or transform)
Transform XML documents(s) using XSLT.
val (or validate)
Validate XML document(s) (well-formed/DTD/XSD/RelaxNG).
fo (or format)
Format XML document(s).
el (or elements)
Display element structure of XML document.
c14n (or canonic)
XML canonicalization.
ls (or list)
List directory as XML.
esc (or escape)
Escape special XML characters.
unesc (or unescape)
Unescape special XML characters.
pyx (or xmln)
Convert XML into PYX format (based on ESIS - ISO 8879).
p2x (or depyx)
Convert PYX into XML.
REFERENCES
XMLStarlet is a command line toolkit to query/edit/check/transform XML documents (for more information see http://xmlstar.source-
forge.net/).
AUTHOR
Mikhail Grushinskiy.
XMLSTARLET(1)