Sponsored Content
Full Discussion: Select records and fields
Top Forums Shell Programming and Scripting Select records and fields Post 302910565 by drl on Friday 25th of July 2014 11:17:04 AM
Old 07-25-2014
Hi.
Code:
awk '/^>/{print ">"$3;next} {print}' file

producing:
Code:
>tris
abcdefghij
klmnopqrs
dfgdfgdsg
sddf
>ter
tuvzabcdef
ahgs

Note the importance of posting representative data sets.

Best wishes ... cheers, drl
This User Gave Thanks to drl For This Post:
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Select records based on search criteria on first column

Hi All, I need to select only those records having a non zero record in the first column of a comma delimited file. Suppose my input file is having data like: "0","01/08/2005 07:11:15",1,1,"Created",,"01/08/2005" "0","01/08/2005 07:12:40",1,1,"Created",,"01/08/2005"... (2 Replies)
Discussion started by: shashi_kiran_v
2 Replies

2. Shell Programming and Scripting

printing select fields in awk

Hi, I want to print certain fields from my data file depending on certain conditions. Somebody pls let me know how to send it to awk. The command below is the one which I want to use in a shell script and this prints fine cat ./datafile.dat | grep -i $SEARCH_STR | awk -F: '{ print $1 $2 $3... (5 Replies)
Discussion started by: maverix
5 Replies

3. Shell Programming and Scripting

Using a variable to select records with awk

As part of a bigger task, I had to read thru a file and separate records into various batches based on a field. Specifically, separate records based on the value in the batch field as defined below. The batch field left-justified numbers. The datafile is here > cat infile 12345 1 John Smith ... (5 Replies)
Discussion started by: joeyg
5 Replies

4. UNIX for Dummies Questions & Answers

Select Distinct on multiple fields

How do I create a script that provides a count of distinct values of a particular field in a file utilizing commonly available UNIX commands (sh or awk)? Field1|Field2|Field3|Field4 AAA|BBB|CCC|DDD 111|222|333|777 AAA|EEE|ZZZ|EEE 111|555|333|444 AAA|EEE|CCC|DDD 111|222|555|444 For... (2 Replies)
Discussion started by: Refresher
2 Replies

5. Shell Programming and Scripting

Block of records to select from a file

Hello: I am new to shell script programming. Now I would like to select specific records block from a file. For example, current file "xyz.txt" is containing 1million records and want to select the block of records from line number 50000 to 100000 and save into a file. Can anyone suggest me how... (3 Replies)
Discussion started by: nvkuriseti
3 Replies

6. Shell Programming and Scripting

awk print only select records from file2

Print only records from file 2 that do not match file 1 based on criteria of comparing column 1 and column 6 Was trying to play around with following code I found on other threads but not too successful Code: awk 'NR==FNR{p=$1;$1=x;A=$0;next}{$2=$2(A?A:",,,")}1' FS=~ OFS=~ file1 FS="*"... (11 Replies)
Discussion started by: sigh2010
11 Replies

7. Shell Programming and Scripting

awk with fields select?

If i have a log file record.txt, with 10 fields - First field is datetime - 7th field is status - 8th filed is name - The last field (10th) is epoch time of the first field 02/17/2012 1:47 PM||||||In Use|chicken||1329515230 02/17/2012 2:53 PM||||||Available|chicken||1329519195 02/17/2012... (4 Replies)
Discussion started by: sabercats
4 Replies

8. UNIX for Dummies Questions & Answers

Turning to SED to select specific records

Hi All, I am looking for a simple concise solution most likely using sed to process the following 4 rows of data from the same record and only keeps it if the second record satisfy certain critea such as surname matches up to smith or jackson: John (firstname) Smith (surname) ... (21 Replies)
Discussion started by: gjackson123
21 Replies

9. Shell Programming and Scripting

To select non-duplicate records using awk

Friends, I have data sorted on id like this id addressl 1 abc 2 abc 2 abc 2 abc 3 aabc 4 abc 4 abc I want to pick all ids with addressesses leaving out duplicate records. Desired output would be id address 1 abc 2 abc 3 abc 4 abc (5 Replies)
Discussion started by: paresh n doshi
5 Replies

10. Shell Programming and Scripting

Quick way to select many records from a large file

I have a file, named records.txt, containing large number of records, around 0.5 million records in format below: 28433005 1 1 3 2 2 2 2 2 2 2 2 2 2 2 28433004 0 2 3 2 2 2 2 2 2 1 2 2 2 2 ... Another file is a key file, named key.txt, which is the list of some numbers in the first column of... (5 Replies)
Discussion started by: zenongz
5 Replies
ppmtosixel(1)						      General Commands Manual						     ppmtosixel(1)

NAME
ppmtosixel - convert a portable pixmap into DEC sixel format SYNOPSIS
ppmtosixel [-raw] [-margin] [ppmfile] DESCRIPTION
Reads a portable pixmap as input. Produces sixel commands (SIX) as output. The output is formatted for color printing, e.g. for a DEC LJ250 color inkjet printer. If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled. A printer control header and a color assignment table begin the SIX file. Image data is written in a compressed format by default. A printer control footer ends the image file. OPTIONS
-raw If specified, each pixel will be explicitly described in the image file. If -raw is not specified, output will default to com- pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands. A raw file is often an order of magni- tude larger than a compressed file and prints much slower. -margin If -margin is not specified, the image will be start at the left margin (of the window, paper, or whatever). If -margin is speci- fied, a 1.5 inch left margin will offset the image. PRINTING
Generally, sixel files must reach the printer unfiltered. Use the lpr -x option or cat filename > /dev/tty0?. BUGS
Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion. If the original PPM maxval was greater than 100, rescaling also reduces the image depth. While the actual RGB values from the ppm file are more or less retained, the color palette of the LJ250 may not match the colors on your screen. This seems to be a printer limitation. SEE ALSO
ppm(5) AUTHOR
Copyright (C) 1991 by Rick Vinci. 26 April 1991 ppmtosixel(1)
All times are GMT -4. The time now is 03:43 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy