Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Print specific pattern line in c++
Top Forums Programming Print specific pattern line in c++ Post 302536494 by Corona688 on Tuesday 5th of July 2011 02:24:57 PM
Old 07-05-2011
It really doesn't matter whether the shell or the program does the file-opening for a simple program that always has one input file and one output file, but since you insist:
Code:
#include <stdio.h>
#include <string.h>

int main(int argc, char *argv[])
{
       char buf[4096];
       FILE *fin, *fout;

       if(argc != 3)
       {
               fprintf(stderr, "Usage:  %s filein fileout\n", argv[0]);
               return(1);
       }

       fin=fopen(argv[1], "r");
       if(fin == NULL)
       {
              fprintf(stderr, "Couldn't open %s\n", argv[1]);
              return(1);
       }


       fout=fopen(argv[2], "w");
       if(fout == NULL)
       {
              fprintf(stderr, "Couldn't open %s\n", argv[2]);
              return(1);
       }

       while(fgets(buf, 4096, fin))
       {
               if(strncmp(buf, "@HWI", 4) == 0)
               {
                       buf[0]='#';
                       fputs(buf, fout);
                       if(fgets(buf, 4096, fin) == NULL) continue;
                       fputs(buf, fout);
               }
       }

       fclose(fin);
       fclose(fout);
       return(0);
}

This User Gave Thanks to Corona688 For This Post:
cpp_beginner
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Print rows, having pattern in specific column...

Hello all, :) I have a pattern file some what like this, cd003 cd005 cd007 cd008 and input file like this, abc cd001 cd002 zca bca cd002 cd003 cza cba cd003 cd004 zca bac cd004 cd005 zac cba cd005 cd006 acz acb cd006 cd007 caz cab cd007 ... (25 Replies)
Discussion started by: admax
25 Replies

2. Shell Programming and Scripting

Print out specific pattern column data

Input file: adc_0123 haa_1000 bcc_520 adc_0150 bcc_290 adc_0112 haa_8000 adc_0139 haa_7000 Output file: adc_0123 adc_0123 haa_1000 bcc_520 adc_0150 adc_0150 bcc_290 (3 Replies)
Discussion started by: patrick87
3 Replies

3. UNIX for Dummies Questions & Answers

How to Detect Specific Pattern and Print the Specific String after It?

I'm still beginner and maybe someone can help me. I have this input: the great warrior a, b, c and what i want to know is, with awk, how can i detect the string with 'warrior' string on it and print the a, b, and c seperately, become like this : Warrior Type a b c Im still very... (3 Replies)
Discussion started by: radynaraya
3 Replies

4. Shell Programming and Scripting

Script to compare pattern and print a different pattern in each line

Hi, I am writing a shell script to parse some files, and gather data. The data in the files is displayed as below. .......xyz: abz: ......qrt: .... .......xyz: abz: ......qrt: ... I have tried using awk and cut, but the position of these values keep changing, so I wasn't able to get... (2 Replies)
Discussion started by: Serena
2 Replies

5. Shell Programming and Scripting

awk to print record not equal specific pattern

how to use "awk" to print any record has pattern not equal ? for example my file has 5 records & I need to get all lines which $1=10 or 20 , $2=10 or 20 and $3 greater than "130302" as it shown : 10 20 1303252348212B030 20 10 1303242348212B030 40 34 1303252348212B030 10 20 ... (14 Replies)
Discussion started by: arm
14 Replies

6. Shell Programming and Scripting

Print only next pattern in a line after a pattern match

I have 2013-06-11 23:55:14 1Umexd-0004cm-IG <= user@domain.com I need sed/awk operation on this, so that it should print the very next pattern only after the the pattern mach <= ie only print user@domain.com (7 Replies)
Discussion started by: anil510
7 Replies

7. Shell Programming and Scripting

Match Pattern and print pattern and multiple lines into one line

Hello Experts , require help . See below output: File inputs ------------------------------------------ Server Host = mike id rl images allocated last updated density vimages expiration last read <------- STATUS ------->... (4 Replies)
Discussion started by: tigerhills
4 Replies

8. Shell Programming and Scripting

Help with print out record if first and next line follow specific pattern

Input file: pattern1 100 250 US pattern2 50 3050 UK pattern3 100 250 US pattern1 70 1050 UK pattern1 170 450 Mal pattern2 40 750 UK . . Desired Output file: pattern1 100 250 US pattern2 50 3050 UK pattern1 170 450 Mal pattern2... (3 Replies)
Discussion started by: cpp_beginner
3 Replies

9. Shell Programming and Scripting

Print all lines between two keyword if a specific pattern exist

I have input file as below I need to check for a pattern and if it is there in file then I need to print all the lines below BEGIN and END keyword. Could you please help me how to get this in AIX using sed or awk. Input file: ABC ******** BEGIN ***** My name is Amit. I am learning unix.... (8 Replies)
Discussion started by: Amit Joshi
8 Replies

10. Shell Programming and Scripting

Shell Scripting , need to search and print a line that contains a specific pattern

Take example of below file. abc.txt nas1:/abc/test/test1 /test nas1:/abc/test/test1/test2 /test/abc nas1:/abc/test/ Now i have a variable that contains "nas1:/abc/test/test1" value , so i need to search the above file for this variable and print only this line. ... (14 Replies)
Discussion started by: mohit_vardhani
14 Replies

LEARN ABOUT LINUX

ppmtosixel

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 07:09 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy