Sponsored Content
Top Forums UNIX for Dummies Questions & Answers Speeding up a Shell Script (find, grep and a for loop) Post 302221812 by broli on Tuesday 5th of August 2008 09:07:15 AM
Old 08-05-2008
the find -exec grep seems kind of redundant

find . -name "*$value*.htm*"

that should make the same result without loading another binary to memory
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

grep'ing and sed'ing chunks in bash... need help on speeding up a log parser.

I have a file that is 20 - 80+ MB in size that is a certain type of log file. It logs one of our processes and this process is multi-threaded. Therefore the log file is kind of a mess. Here's an example: The logfile looks like: "DATE TIME - THREAD ID - Details", and a new file is created... (4 Replies)
Discussion started by: elinenbe
4 Replies

2. Shell Programming and Scripting

Bash script (using find and grep)

I'm trying to make a simple search script but cannot get it right. The script should search for keywords inside files. Then return the file paths in a variable. (Each file path separated with \n). #!/bin/bash SEARCHQUERY="searchword1 searchword2 searchword3"; for WORD in $SEARCHQUERY do ... (6 Replies)
Discussion started by: limmer
6 Replies

3. Shell Programming and Scripting

Shell script / Grep / Awk to variable and Loop

Hi, I have a text file with data in that I wish to extract, assign to a variable and process through a loop. Kind of the process that I am after: 1: Grep the text file for the values. Currently using: cat /root/test.txt | grep TESTING= | awk -F"=" '{ a = $2 } {print a}' | sort -u ... (0 Replies)
Discussion started by: Spoonless
0 Replies

4. UNIX for Dummies Questions & Answers

Speeding/Optimizing GREP search on CSV files

Hi all, I have problem with searching hundreds of CSV files, the problem is that search is lasting too long (over 5min). Csv files are "," delimited, and have 30 fields each line, but I always grep same 4 fields - so is there a way to grep just those 4 fields to speed-up search. Example:... (11 Replies)
Discussion started by: Whit3H0rse
11 Replies

5. Shell Programming and Scripting

Speeding up search and replace in a for loop

Hello, I am using sed in a for loop to replace text in a 100MB file. I have about 55,000 entries to convert in a csv file with two entries per line. The following script works to search file.txt for the first field from conversion.csv and then replace it with the second field. While it works fine,... (15 Replies)
Discussion started by: pbluescript
15 Replies

6. Shell Programming and Scripting

Help speeding up script

This is my first experience writing unix script. I've created the following script. It does what I want it to do, but I need it to be a lot faster. Is there any way to speed it up? cat 'Tax_Provision_Sample.dat' | sort | while read p; do fn=`echo $p|cut -d~ -f2,4,3,8,9`; echo $p >> "$fn.txt";... (20 Replies)
Discussion started by: JohnN6
20 Replies

7. Shell Programming and Scripting

How to use grep in a loop using a bash script?

Dear all, Please help with the following. I have a file, let's call it data.txt, that has 3 columns and approx 700,000 lines, and looks like this: rs1234 A C rs1236 T G rs2345 G T Please use code tags as required by forum rules! I have a second file, called reference.txt,... (1 Reply)
Discussion started by: aberg
1 Replies

8. Shell Programming and Scripting

Speeding up shell script with grep

HI Guys hoping some one can help I have two files on both containing uk phone numbers master is a file which has been collated over a few years ad currently contains around 4 million numbers new is a file which also contains 4 million number i need to split new nto two separate files... (4 Replies)
Discussion started by: dunryc
4 Replies

9. Shell Programming and Scripting

Help 'speeding' up this 'parsing' script - taking 24+ hours to run

Hi, I've written a ksh script that read a file and parse/filter/format each line. The script runs as expected but it runs for 24+ hours for a file that has 2million lines. And sometimes, the input file has 10million lines which means it can be running for more than 2 days and still not finish.... (9 Replies)
Discussion started by: newbie_01
9 Replies

10. Shell Programming and Scripting

Help with speeding up my working script to take less time - how to use more CPU usage for a script

Hello experts, we have input files with 700K lines each (one generated for every hour). and we need to convert them as below and move them to another directory once. Sample INPUT:- # cat test1 1559205600000,8474,NormalizedPortInfo,PctDiscards,0.0,Interface,BG-CTA-AX1.test.com,Vl111... (7 Replies)
Discussion started by: prvnrk
7 Replies
FIND(1) 						      General Commands Manual							   FIND(1)

NAME
find - find files meeting a given condition SYNOPSIS
find directory expression EXAMPLES
find / -name a.out -print # Print all a.out paths find /usr/ast ! -newer f -ok rm {} ; # Ask before removing find /usr -size +20 -exec mv {} /big ; # move files > 20 blks find / -name a.out -o -name '*.o' -exec rm {}; # 2 conds DESCRIPTION
Find descends the file tree starting at the given directory checking each file in that directory and its subdirectories against a predi- cate. If the predicate is true, an action is taken. The predicates may be connected by -a (Boolean and), -o (Boolean or) and ! (Boolean negation). Each predicate is true under the conditions specified below. The integer n may also be +n to mean any value greater than n, -n to mean any value less than n, or just n for exactly n. -name s true if current filename is s (include shell wild cards) -size n true if file size is n blocks -inum n true if the current file's i-node number is n -mtime ntrue if modification time relative to today (in days) is n -links ntrue if the number of links to the file is n -newer ftrue if the file is newer than f -perm n true if the file's permission bits = n (n is in octal) -user u true if the uid = u (a numerical value, not a login name) -group gtrue if the gid = g (a numerical value, not a group name) -type x where x is bcdfug (block, char, dir, regular file, setuid, setgid) -xdev do not cross devices to search mounted file systems Following the expression can be one of the following, telling what to do when a file is found: -print print the file name on standard output -exec execute a MINIX command, {} stands for the file name -ok prompts before executing the command SEE ALSO
test(1), xargs(1). FIND(1)
All times are GMT -4. The time now is 01:14 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy