Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Search a String between start and end of a block in a file
Top Forums Shell Programming and Scripting Search a String between start and end of a block in a file Post 303013527 by Chubler_XL on Thursday 22nd of February 2018 07:19:31 PM
Old 02-22-2018
store the string in a variable and test it contains 123 before printing it:

Code:
awk '
/^abc$/{flag=1;block=""}
flag{if(length(block)) block = block "\n" $0
     else block=$0 }
/^def$/ && block ~ "123" { print block }' values.txt

Last edited by Chubler_XL; 02-22-2018 at 08:34 PM.. Reason: Fixed code logic - incorrectly built block variable
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

String as both start and end anchors in awk

Not sure if the title of this thread makes sense, but hopefully my explanation will. I'm using awk to print some stats from an apache accesslog. I would like to specify the regexp condition where only the two root pages of "index.html" and "/" are counted in my results. What I can't figure out... (3 Replies)
Discussion started by: picassolsus
3 Replies

2. Shell Programming and Scripting

Appending string, variable to file at the start and string at end

Hi , I have below file with 13 columns. I need 2-13 columns seperated by comma and I want to append each row with a string "INSERT INTO xxx" in the begining as 1st column and then a variable "$node" and then $2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12,$13 and at the end another string " ; COMMIT;" ... (4 Replies)
Discussion started by: Vaddadi
4 Replies

3. Shell Programming and Scripting

read a string from its end to its start and stop when you find a specific character

How can I do this? Actually I have a file which contains a path e.g. /home/john/Music/hello.mp3 and I want to take only the filename (hello.mp3) So, I need to read the file from its end to its start till the character "/" Is this possible? Thanks, I am sure you'll not disappoint me here! Oh,... (9 Replies)
Discussion started by: hakermania
9 Replies

4. Shell Programming and Scripting

how to specify start and stop of a search string

I am trying to extract a string from a line of text. Currently I am using grep -o 'startofstring(.........' The string is not always the same size. The string I'm trying to extract starts with 'test(' ends with ')'. ex "blah,blah,blah,test(stringoftext),blah blah" How do I... (4 Replies)
Discussion started by: jeepguy
4 Replies

5. Shell Programming and Scripting

Remove lines between the start string and end string including start and end string Python

Hi, I am trying to remove lines once a string is found till another string is found including the start string and end string. I want to basically grab all the lines starting with color (closing bracket). PS: The line after the closing bracket for color could be anything (currently 'more').... (1 Reply)
Discussion started by: Dabheeruz
1 Replies

6. Shell Programming and Scripting

Search a string in a text file and add another string at the end of line

Dear All I am having a text file which is having more than 200 lines. EX: 001010122 12000 BIB 12000 11200 1200003 001010122 2000 AND 12000 11200 1200003 001010122 12000 KVB 12000 11200 1200003 In the above file i want to search for string KVB... (5 Replies)
Discussion started by: suryanarayana
5 Replies

7. Shell Programming and Scripting

How can I search with start and end criteria?

Hello I'm using cygwin and wouldlike extract information from an xml file according specific values, but don't know how. Let's say in a file content looks like this: <tab> SURNAME=Mustermann NAME=Max CUSTOMER SINCE= 18.01.2000 ADDRESS=Birmingham ... (2 Replies)
Discussion started by: witchblade
2 Replies

8. UNIX for Beginners Questions & Answers

Search a string inside a pattern matched block of a file

How to grep for searching a string within a begin and end pattern of a file. Sent from my Redmi 3S using Tapatalk (8 Replies)
Discussion started by: Baishali
8 Replies

9. Shell Programming and Scripting

Printing string from last field of the nth line of file to start (or end) of each line (awk I think)

My file (the output of an experiment) starts off looking like this, _____________________________________________________________ Subjects incorporated to date: 001 Data file started on machine PKSHS260-05CP ********************************************************************** Subject 1,... (9 Replies)
Discussion started by: samonl
9 Replies

10. UNIX for Beginners Questions & Answers

How do delete certain lines alone which are matching with start and end string values in file?

Hi, In my previous post ( How to print lines from a files with specific start and end patterns and pick only the last lines? ), i have got a help to get the last select statement from a file, now i need to remove/exclude the output from main file: Input File format: SELECT ABCD, DEFGH,... (2 Replies)
Discussion started by: nani2019
2 Replies

LEARN ABOUT DEBIAN

h5jam

h5jam(1)						      General Commands Manual							  h5jam(1)

NAME

       h5jam - Add a user block to a HDF5 file

SYNOPSIS

       h5jam -u user_block -i in_file.h5 [-o out_file.h5] [--clobber]

DESCRIPTION

       h5jam  concatenates  a  user_block  file  and an HDF5 file to create an HDF5 file with a user block. The user block can be either binary or
       text. The output file is padded so that the HDF5 header begins on byte 512, 1024, etc.. (See the HDF5 File Format.)

       If out_file.h5 is given, a new file is created with the user_block followed by the contents of in_file.h5.   In	this  case,  infile.h5	is
       unchanged.

       If out_file.h5 is not specified, the user_block is added to in_file.h5.

       If  in_file.h5  already	has  a	user  block,  the contents of user_block will be added to the end of the existing user block, and the file
       shifted to the next boundary. If --clobber is set, any existing user block will be overwritten.

EXAMPLE USAGE

       Create new file, newfile.h5, with the text in file mytext.txt as the user block for the HDF5 file file.h5.

	    h5jam -u mytext.txt -i file.h5 -o newfile.h5

       Add text in file mytext.txt to front of HDF5 dataset, file.h5.

	    h5jam -u mytext.txt -i file.h5

       Overwrite the user block (if any) in file.h5 with the contents of mytext.txt.

	    h5jam -u mytext.txt -i file.h5 --clobber

RETURN VALUE

       h5jam returns the size of the output file, or -1 if an error occurs.

CAVEATS

       This tool copies all the data (sequentially) in the file(s) to new offsets. For a large file, this copy will take a long time.

       The most efficient way to create a user block is to create the file with a user block (see H5Pset_user_block), and  write  the  user  block
       data into that space from a program.

       The  user block is completely opaque to the HDF5 library and to the h5jam and h5unjam tools.  The user block is simply read or written as a
       string of bytes, which could be text or any kind of binary data.  It is up to the user to know what the contents of the	user  block  means
       and how to process it.

       When the user block is extracted, all the data is written to the output, including any padding or unwritten data.

       This tool moves the HDF5 file through byte copies, i.e., it does not read or interpret the HDF5 objects.

SEE ALSO

       h5dump(1), h5ls(1), h5diff(1), h5import(1), gif2h5(1), h52gif(1), h5perf(1), h5unjam(1).

																	  h5jam(1)
All times are GMT -4. The time now is 03:49 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy