Sponsored Content
Top Forums Shell Programming and Scripting Can I speed up my grep command? Post 302862139 by RudiC on Thursday 10th of October 2013 07:46:28 AM
Old 10-10-2013
We don't know what your server problems are. If it stopped working, that will definitely not be due to those commands.
Or is it just your terminal session that hangs? Try <CTRL>C or <CTRL>D or kill it fromthe task manager.


Please explain in detail and plain English what your problems are, also supplying input and desired output samples.
 

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
on(1)                                                              User Commands                                                             on(1)

NAME
on - execute a command on a remote system with the local environment SYNOPSIS
on [-i] [-d] [-n] host command [argument] ... DESCRIPTION
The on program is used to execute commands on another system, in an environment similar to that invoking the program. All environment vari- ables are passed and the current working directory is preserved. To preserve the working directory, the working file system must be either already mounted on the host or be exported to it. Relative path names will only work if they are within the current file system. Absolute path names may cause problems. The standard input is connected to the standard input of the remote command. The standard output and the standard error from the remote command are sent to the corresponding files for the on command. OPTIONS
The following options are supported: -d Debug mode. Prints out some messages as work is being done. -i Interactive mode. Uses remote echoing and special character processing. This option is needed for programs that expect to be talk- ing to a terminal. All terminal modes and window size changes are propagated. -n No Input. This option causes the remote program to get EOF when it reads from the standard input, instead of passing the standard input from the standard input of the on program. For example, -n is necessary when running commands in the background with job control. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWnfscu | +-----------------------------+-----------------------------+ SEE ALSO
chkey(1), rlogin(1), rsh(1), telnet(1), attributes(5) DIAGNOSTICS
unknown host Host name not found. cannot connect to server Host down or not running the server. can't find Problem finding the working directory. can't locate mount point Problem finding current file system. RPC: Authentication error The server requires DES authentication and you do not have a secret key registered with keyserv. Perhaps you logged in without a pass- word. Try to keylogin. If that fails, try to set your publickey with chkey. on server: RPC: can't encode arguments The 10240 byte limit for arguments to be encoded and passed from the sending to the receiving system has been exceeded. Other diagnostic messages may be passed back from the server. BUGS
When the working directory is remote mounted over NFS, a Control-Z hangs the window. Root cannot use on. SunOS 5.10 8 Oct 2003 on(1)
All times are GMT -4. The time now is 02:09 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy