Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Can I speed up my grep command?

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Can I speed up my grep command?
# 8  
Old 10-08-2013
In what way did it "not work"?
# 9  
Old 10-08-2013
'+' didn't work in my statement. It didn't return any data then.
# 10  
Old 10-08-2013
Quote:
Originally Posted by emc^24sho
'+' didn't work in my statement. It didn't return any data then.
Please try the following commands:
Code:
uname -a
xmlFileNames=$(find . -name "*.xml" -exec grep -Fl "Status" {} '+')
printf "find w/ grep -F exit code: %d\n" $?
xmlFileNames=$(find . -name "*.xml" -exec fgrep -l "Status" {} '+')
printf "find w/ fgrep exit code: %d\n" $?

and show us the output (including any diagnostic messages that were produced).
This User Gave Thanks to Don Cragun For This Post:
emc^24sho
# 11  
Old 10-09-2013
The error message when I tried this other code is:
Code:
find: non-terminated '-exec' argument list
Usage: find directory ... expression
find w/ grep -F exit code:2 
find: non-terminated "-exec' argument list
Usuage: find directory ... expression
find w/ fgrep exit code: 2

# 12  
Old 10-09-2013
Quote:
Originally Posted by emc^24sho
The error message when I tried this other code is:
Code:
find: non-terminated '-exec' argument list
Usage: find directory ... expression
find w/ grep -F exit code:2 
find: non-terminated "-exec' argument list
Usuage: find directory ... expression
find w/ fgrep exit code: 2

So, uname -a produced no output???

What operating system are you using?
# 13  
Old 10-09-2013
Now even when I rollback the version of my script it doesn't work...And I can see the data is all there...

---------- Post updated at 11:40 AM ---------- Previous update was at 11:17 AM ----------

I know we're using mks. Other than that I don't know... I'm new here...

---------- Post updated at 11:50 AM ---------- Previous update was at 11:40 AM ----------

Now I can't even run the find command from the command line...
Code:
find: non-terminated '-exec' argument list
Usage: find directory ... expression

How can I get that back?

---------- Post updated at 12:27 PM ---------- Previous update was at 11:50 AM ----------

How can I get back the ability to use the find command please?

---------- Post updated at 12:29 PM ---------- Previous update was at 12:27 PM ----------

It must be a problem with the -exec part....idk?

---------- Post updated at 01:34 PM ---------- Previous update was at 12:29 PM ----------

Why did you put the uname -a in your code back to me?

---------- Post updated at 01:56 PM ---------- Previous update was at 01:34 PM ----------

I'm on an Windows NT server....
# 14  
Old 10-09-2013
He asked for uname -a as this command displays your operating system and version numbers. Something is strange as the posted find command should work on most systems. What output do you get from that command.


Working on Don Cragun's solution another slight improvement is to use awk to bomb out if string isn't in first 8 lines like this
(Example is searching for the string Status):

Code:
find . -name "*.xml" -exec awk 'NR>8{quit}/Status/{print FILENAME}' {} '+'
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. 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

2. 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

3. 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

4. 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

5. 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

6. 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

7. 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

8. 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

9. 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

10. 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
Login or Register to Ask a Question