Sponsored Content
Top Forums UNIX for Dummies Questions & Answers Remove header from files: optimal performance Post 302145449 by kausmone on Wednesday 14th of November 2007 07:43:27 AM
Old 11-14-2007
Remove header from files: optimal performance

I need to concatenate about a thousand files (using a loop) on a UNIX server. Also, each file has a header row which is to be removed. Which of the following would give better performance?

tail+2 <filename> or sed '1,1d' <filename>

Or is there another, faster way?

Thanks,
Kaus
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

remove header and footer rows

I would like to remove some lines from begining of file (header) and some lines from end of file (footer). The header/footer lines generated by web-browser when the user upload a file to my webserver. Example: -----------------------------7d62af20c052c Content-Disposition: form-data;... (2 Replies)
Discussion started by: seaky
2 Replies

2. UNIX for Dummies Questions & Answers

Copy all the files with time stamp and remove header,trailer from file

All, I am new to unix and i have the following requirement. I have file(s) landing into input directory with timestamp, first i want to copy all these files into seperate directory then i want to rename these files without timestamp and also remove header,trailer from that file.. Could... (35 Replies)
Discussion started by: ksrams
35 Replies

3. SCO

How to remove date and page header from a printout

I have some HP4+ and HP5 printers printing from Unixware 7.1.4. The problem is that they print a page header with the date and page number. I can't seem to figure out how to stop this. These headers through the pagination off. (2 Replies)
Discussion started by: sladeburke
2 Replies

4. Shell Programming and Scripting

bash ps; remove the header, sort and reinsert

Hi, I'm ssh'ing into a server using ruby and sending a one-liner to retrieve the output of the 'ps aux' command. So far, this is what I have: ps aux | sort -r -n -k3 | sed -e '1s/^/this is first\n/' | head -n10 With this I can insert a line at position 1, but I would rather extract the... (3 Replies)
Discussion started by: gekeha
3 Replies

5. Shell Programming and Scripting

improve performance - replace $\| with $#@ and remove header and trailer records

Hi All, In my file i need to remove header and trailer records which comes in 1st line and last line respectively. After that i need to replace '$\|' with '$#@'. I am using sed command for this and its taking lot of time. Is there any other command which can be used to improve performance? ... (1 Reply)
Discussion started by: HemaV
1 Replies

6. AIX

volume group lun sizes and no of file systems for optimal performance

Hello, It's been a while since I've done AIX..., but I'm planning a new TSM on AIX disk-only backup solution. I'm planning to make an AIX volume group out of 40 luns of 1 TB. I'm planning to create one big file system on here. The purpose for this is to use this as a device class FILE for... (5 Replies)
Discussion started by: smashingpumpkin
5 Replies

7. UNIX for Dummies Questions & Answers

Merge all csv files in one folder considering only 1 header row and ignoring header of all others

Friends, I need help with the following in UNIX. Merge all csv files in one folder considering only 1 header row and ignoring header of all other files. FYI - All files are in same format and contains same headers. Thank you (4 Replies)
Discussion started by: Shiny_Roy
4 Replies

8. UNIX for Dummies Questions & Answers

remove the header and footer using sed

I want to delete the header and footer in the file by using sed for that i ran the below script and my text file looks like emp.txt # This file contain employee # information abc 12300 34 'FGH' # This is confidential as per the firm rules. my intention is to remove the header... (8 Replies)
Discussion started by: vmachava
8 Replies

9. Programming

[solved] how to remove header and footer

it still display header and footer header SQL*Plus: Release 10.2.0.1.0 - Production on Mon Sep 24 13:41:51 2012 Copyright (c) 1982, 2005, Oracle. All rights reserved. Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production With the Partitioning, Real... (0 Replies)
Discussion started by: ment0smintz
0 Replies

10. Shell Programming and Scripting

Remove files having 0 byte or only header

Hi Team, I'm looking for a command which removes files having 0 byte of having only header line (1 line). My ETL process generates these files. Few files are not having header, in that case if no data from source, it will be 0 byte and few files are having header, in that case if no data from... (7 Replies)
Discussion started by: ace_friends22
7 Replies
PMDAZIMBRA(1)						       Performance Co-Pilot						     PMDAZIMBRA(1)

NAME
pmdazimbra - Zimbra Collaboration Suite (ZCS) PMDA DESCRIPTION
pmdazimbra is a Performance Metrics Domain Agent (PMDA) which exports metric values from several subsystems of the Zimbra Suite. Further details on Zimbra can be found at http://www.zimbra.com/. INSTALLATION
If you want access to the names and values for the zimbra performance metrics, do the following as root: # cd $PCP_PMDAS_DIR/zimbra # ./Install If you want to undo the installation, do the following as root: # cd $PCP_PMDAS_DIR/zimbra # ./Remove pmdazimbra is launched by pmcd(1) and should never be executed directly. The Install and Remove scripts notify pmcd(1) when the agent is installed or removed. FILES
/opt/zimbra/zmstat/* comma-separated value files containing Zimbra performance data $PCP_PMDAS_DIR/zimbra/Install installation script for the pmdazimbra agent $PCP_PMDAS_DIR/zimbra/Remove undo installation script for the pmdazimbra agent $PCP_LOG_DIR/pmcd/zimbra.log default log file for error messages from pmdazimbra SEE ALSO
pmcd(1). 3.8.10 Performance Co-Pilot PMDAZIMBRA(1)
All times are GMT -4. The time now is 11:23 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy