Sponsored Content
Top Forums Shell Programming and Scripting Can I speed up my grep command? Post 302862251 by RudiC on Thursday 10th of October 2013 10:29:32 AM
Old 10-10-2013
Sorry, I don't quite get what you are saying. You are always talking generically, no data, no details. How then do you expect somebody to help you?
What variable? What script? What environment? Which files/directories? Come up with real data: OS version, command versions, (partial) directory listing, (relevant) script snippet, (partial) file listings, execution logs, error messages.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

grep - speed of search

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)
Discussion started by: davirime
1 Replies

2. Filesystems, Disks and Memory

dmidecode, RAM speed = "Current Speed: Unknown"

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)
Discussion started by: Santi
0 Replies

3. UNIX for Advanced & Expert Users

how to exclude the GREP command from GREP

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)
Discussion started by: yamsin789
2 Replies

4. Shell Programming and Scripting

Is there a command to measure compile speed?

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)
Discussion started by: Darklight
2 Replies

5. Shell Programming and Scripting

can anyone help with shell script command about searching word with grep command?

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)
Discussion started by: aintour
2 Replies

6. Filesystems, Disks and Memory

data from blktrace: read speed V.S. write speed

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)
Discussion started by: W.C.C
1 Replies

7. Shell Programming and Scripting

How to speed up grep?

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)
Discussion started by: vij_krr
4 Replies

8. Shell Programming and Scripting

Speed Up Grep

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)
Discussion started by: nanthagopal
5 Replies

9. Shell Programming and Scripting

Speed : awk command to count the occurrences of fields from one file present in the other file

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)
Discussion started by: mdkm
10 Replies

10. Shell Programming and Scripting

Grep command giving different result for different users for same command

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
SENDFILES(1)							     [nmh-1.5]							      SENDFILES(1)

NAME
sendfiles - send multiple files via a MIME message SYNOPSIS
sendfiles [delay] mailpath subject file1 [file2 ...] DESCRIPTION
The shell script sendfiles, is used to send a collection of files and directories via electronic mail. sendfiles mailpath "subject" files ... sendfiles will archive the files and directories you name with the tar command, and then mail the compressed archive to the "mailpath" with the given "subject". The archive will be automatically split up into as many messages as necessary in order to get past most mailers. Sometimes you want sendfiles to pause after posting a partial message. This is usually the case when you are running sendmail and expect to generate a lot of partial messages. If the first argument given to sendfiles starts with a dash, then it is interpreted as the number of seconds to pause in between postings, e.g., sendfiles -30 mailpath "subject" files ... will pause 30 seconds in between each posting. Extracting the Received Files When these messages are received, invoke mhstore once for the list of messages. The default is for mhstore to store the combined parts as a new message in the current folder, although this can be changed using storage formatting strings. You can then use mhlist to find out what's inside; possibly followed by mhstore again to write the archive to a file where you can subsequently uncompress and untar it. For instance: % mhlist 5-8 msg part type/subtype size description 5 message/partial 47K part 1 of 4 6 message/partial 47K part 2 of 4 7 message/partial 47K part 3 of 4 8 message/partial 18K part 4 of 4 % mhstore 5-8 reassembling partials 5,6,7,8 to folder inbox as message 9 % mhlist -verbose 9 msg part type/subtype size description 9 application/octet-stream 118K (extract with uncompress | tar xvpf -) type=tar conversions=compress % mhstore 9 % uncompress < 9.tar.Z | tar xvpf - Alternately, by using the -auto switch, mhstore will automatically do the extraction for you: % mhlist 5-8 msg part type/subtype size description 5 message/partial 47K part 1 of 4 6 message/partial 47K part 2 of 4 7 message/partial 47K part 3 of 4 8 message/partial 18K part 4 of 4 % mhstore 5-8 reassembling partials 5,6,7,8 to folder inbox as message 9 % mhlist -verbose 9 msg part type/subtype size description 9 application/octet-stream 118K (extract with uncompress | tar xvpf -) type=tar conversions=compress % mhstore -auto 9 -- tar listing appears here as files are extracted As the second tar listing is generated, the files are extracted. A prudent user will never put -auto in the .mh_profile file. The correct procedure is to first use mhlist to find out what will be extracted. Then mhstore can be invoked with -auto to perform the extraction. FILES
$HOME/.mh_profile The user profile PROFILE COMPONENTS
Path: To determine the user's nmh directory Current-Folder: To find the default current folder SEE ALSO
mhbuild(1), mhlist(1), mhshow(1), mhstore(1). Proposed Standard for Message Encapsulation (RFC-934) DEFAULTS
`-noverbose' CONTEXT
None MH.6.8 11 June 2012 SENDFILES(1)
All times are GMT -4. The time now is 06:44 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy