Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Parsing file and extracting the useful data block
Top Forums Shell Programming and Scripting Parsing file and extracting the useful data block Post 65548 by zazzybob on Monday 7th of March 2005 06:26:59 AM
Old 03-07-2005
Assuming that your input file is always of the same format as specified in your example, the following code will work. Save this as block.awk
Code:
#!/usr/bin/awk -f

/^block/ {
  print $0
  next
}
/^start/ {
  flag = 1
  next
}
flag == 1 {
  print $0
  flag = 0
}

Make it executable, run it over your input file, and redirect output if desired...
Code:
$ chmod +x ./block.awk
$ ./block.awk my_file > my_output
$ more my_output
block1
useful data
block2
useful data

Cheers
ZB
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Parsing the data in a file

Hi, I have file (FILE.tmp) having contents, FILE.tmp ======== filename=menudata records=0000000000037 ldbname=pinsys timestamp=2005/05/14-18:32:33 I want to parse it bring a new file which will look like, filename records ldbname timestamp... (2 Replies)
Discussion started by: Omkumar
2 Replies

2. UNIX for Dummies Questions & Answers

Extracting Data from a File

Hi I need to calculate the number of occurrences of a item in a number of files using Perl. The item appears continually throughout the files but in each case I only want to calculate it in certain blocks of the file. Example - Calculalte the number of occurrences of a 'pass' in a block of... (0 Replies)
Discussion started by: oop
0 Replies

3. Shell Programming and Scripting

urgent-extracting block data from flat file using shell script

Hi, I want to extract block of data from flat file. the data will be like this start of log One two three end of log i want all data between start of log to end of log i.e One two three to be copied to another file. This particular block may appear multiple times in same file. I... (4 Replies)
Discussion started by: shirish_cd
4 Replies

4. Shell Programming and Scripting

Parsing file, yaml file? Extracting specific sections

Here is a data file, which I believe is in YAML. I am trying to retrieve just the 'addon_domains" section, which doesnt seem to be as easy as I had originally thought. Any help on this would be greatly appreciated!! I have been trying to do this in awk and mostly bash scripting instead of perl... (3 Replies)
Discussion started by: Rhije
3 Replies

5. UNIX for Dummies Questions & Answers

Extracting data from an xml file

Hello, Please can someone assist. I have the following xml file: <?xml version="1.0" encoding="utf-8" ?> - <PUTTRIGGER xmlns:xsd="http://www.test.org/2001/XMLSchema" xmlns:xsi="http://www.test.org/2001/XMLSchema-instance" APPLICATIONNUMBER="0501160" ACCOUNTNAME="Mrs S Test"... (15 Replies)
Discussion started by: Dolph
15 Replies

6. Shell Programming and Scripting

Extracting specific lines of data from a file and related lines of data based on a grep value range?

Hi, I have one file, say file 1, that has data like below where 19900107 is the date, 19900107 12 144 129 0.7380047 19900108 12 168 129 0.3149017 19900109 12 192 129 3.2766666E-02 ... (3 Replies)
Discussion started by: Wynner
3 Replies

7. Shell Programming and Scripting

Need help in extracting data from xml file

Hello, This is my first post in here, so excuse me if I sound too noob here! I need to extract the path "/apps/mp/installedApps/V61/HRO/hrms_01698_A_qa.ear" from the below xml extract. The path will always appear with the key "binariesURL" <deployedObject... (6 Replies)
Discussion started by: abhishek2386
6 Replies

8. UNIX for Dummies Questions & Answers

Extracting data from file

I am trying to compare the data in lines 3 & 5 to see if they match up to the '-S570' (see first code set, all proprietary information has been removed from code set) spawn telnet Trying ... Connected to CA-LOS1234-ASE-S570.cl . Escape character is '^]'. CA-LOS1234-ASE-S570 Username: ... (1 Reply)
Discussion started by: slipshft
1 Replies

9. Shell Programming and Scripting

extracting block of lines from a file

consider the input file which i am dealing with looks like this.. #cat 11.sql create table abc ( . . . ) engine=Innodb ; . . etc . . . create table UsM ( blah blah blah ) engine=Innodb ; (5 Replies)
Discussion started by: vivek d r
5 Replies

10. Shell Programming and Scripting

Parsing file data

Hey Guys, I'm a novice at shell scripts and i need some help parsing file data. Basically, I want to write a script that retrieves URLs. Here is what I have so far. #!/bin/bash echo "Please enter start date (format: yyyy-mm-dd):\c" read STARTDATE echo "Please enter end date... (7 Replies)
Discussion started by: silverdust
7 Replies

LEARN ABOUT LINUX

cabextract

CABEXTRACT(1)						      General Commands Manual						     CABEXTRACT(1)

NAME

       cabextract - program to extract files from Microsoft cabinet (.cab) archives

SYNOPSIS

       cabextract [-ddir] [-f] [-Fpattern] [-h] [-l] [-L] [-p] [-q] [-s] [-t] [-v]  cabinet files ...

DESCRIPTION

       cabextract  is  a  program that un-archives files in the Microsoft cabinet file format (.cab) or any binary file which contains an embedded
       cabinet file (frequently found in .exe files).

       cabextract will extract all files from all cabinet files specified on the command line.

       To extract a multi-part cabinet consisting of several files, only the first cabinet file needs to be given as an argument to cabextract	as
       it  will  automatically	look  for the remaining files. To prevent cabextract from extracting cabinet files you did not specify, use the -s
       option.

OPTIONS

       A summary of options is included below.

       -d dir Extracts all files into the directory dir.

       -f     When testing or extracting cabinet files, corrupted MSZIP blocks will be ignored. A warning will be printed  if  a  corrupted  MSZIP
	      block is encountered.

       -F pattern
	      Only  files with names that match the shell pattern pattern shall be listed, tested or extracted. On non-GNU systems, this match may
	      be case-sensitive.

       -h     Prints a page of help and exits.

       -l     Lists the contents of the given cabinet files, rather than extracting them.

       -L     When extracting cabinet files, makes each extracted file's name lowercase.

       -p     Files shall be extracted to standard output.

       -q     When extracting cabinet files, suppresses all messages except errors and warnings.

       -s     When testing, listing or extracting cabinets which span multiple files, only cabinet files given on the command line shall be used.

       -t     Tests the integrity of the cabinet. Files are decompressed, but not written to disk or standard output.  If  the	file  successfully
	      decompresses, the MD5 checksum of the file is printed.

       -v     If given alone on the command line, prints the version of cabextract and exits. Given with a list of cabinet files, it will list the
	      contents of the cabinet files.

AUTHOR

       This manual page was written by Stuart Caie <kyzer@4u.net>, based on the one written by Eric Sharkey <sharkey@debian.org>, for  the  Debian
       GNU/Linux system.

SEE ALSO

       lcab(1)

								 October 30, 2005						     CABEXTRACT(1)
All times are GMT -4. The time now is 02:39 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy