Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Print Missing Header Name from File.
Top Forums Shell Programming and Scripting Print Missing Header Name from File. Post 302968784 by pareshkp on Monday 14th of March 2016 12:10:12 PM
Old 03-14-2016
Print Missing Header Name from File.
HI Guys,

I have file A.txt

Code:
ID,L1,L2,L3,L4
1A,2a,33a,44b,55c
2A,10a,14a,15b,16c

File B.txt

Code:
ID
L1
L4
L5

Output:-

Code:
ID,L1,L4,L5
1A,55c,n/a
2A,16c,n/a

I have below solution which is works perfect if all header match from file b.

Code:
nawk -v OFS="," '$1=$1' $Lic1 > $Lic2

	nawk '
	BEGIN           {OFS = FS = ","}
	FNR == NR       {h[$0] = NR
                 MX = NR
                 next
                }
	FNR == 1        {for (i=1; i<=NF; i++) if ($i in h) a[h[$i]] = i
                }

                {for (i=1; i<=MX; i++) printf "%s%s", $a[i], (i==MX)?RS:OFS
                }
	' fileB fileA

Thanks
 

10 More Discussions You Might Find Interesting

1. Linux

Reading the header of a tar file(posix header)

say i have these many file in a directory named exam. 1)/exam/newfolder/link.txt. 2)/exam/newfolder1/ and i create a tar say exam.tar well the problem is, when i read the tar file i dont find any metadata about the directories,as you cannot create a tar containig empty directories. on the... (2 Replies)
Discussion started by: Tanvirk
2 Replies

2. Shell Programming and Scripting

print lines except the header

awk -F ";" '{if($10>80 && NR>1) print $0 }' txt_file_* I am using this command to print the lines which has 10th field more then 80 and leaving the first line of the file which is the header. But this is not working , the first line is is coming as output , please correct me . thanks (2 Replies)
Discussion started by: madfox
2 Replies

3. OS X (Apple)

[GCC] Missing header files

Good morning! I am creating a program that uses raw sockets in C and need to call the "netpacket/packet.h" header file. However when I compile with gcc i get I'm running os 10.5.8 with version gcc 4.0.1 and just update xcode last night which didn't seem to help. Any ideas will be greatly... (2 Replies)
Discussion started by: taiL
2 Replies

4. Shell Programming and Scripting

need to print the missing lines in 1 file from 1 file via script

Hi, I am writting a script which will take all the files present in 2 directories. (the 2 directories have the same files with same name but some different content) i need 2 compare 2 files and then copy the contents of file1 to file2. the contents which are missing in file1 and nothing from... (8 Replies)
Discussion started by: dazdseg
8 Replies

5. Shell Programming and Scripting

awk print header as text from separate file with getline

I would like to print the output beginning with a header from a seperate file like this: awk 'BEGIN{FS="_";print ((getline < "header.txt")>0)} { if (! ($0 ~ /EL/ ) print }" input.txtWhat am i doing wrong? (4 Replies)
Discussion started by: sdf
4 Replies

6. UNIX for Dummies Questions & Answers

Find the missing file and print

Hi , i will be getting 24 files for one day with a formate like 20131028_01 - 20131028_24 kind of ,i am trying to write a shell script to count the number of files and if the count is not equal to 24 print the missing files names for A in `seq 0 23`; do ls *20131024_`printf "%02d" $A`*;... (3 Replies)
Discussion started by: vikatakavi
3 Replies

7. Shell Programming and Scripting

Compare two files and find match and print the header of the second file

Hi, I have two input files; file1 and file2. I compare them based on matched values in 1 column and print selected columns of the second file (file2). I got the result but the header was not printed. i want the header of file2 to be printed together with the result. Then i did below codes:- ... (3 Replies)
Discussion started by: redse171
3 Replies

8. Shell Programming and Scripting

Find columns in a file based on header and print to new file

Hello, I have to fish out some specific columns from a file based on the header value. I have the list of columns I need in a different file. I thought I could read in the list of headers I need, # file with header names of required columns in required order headers_file=$2 # read contents... (11 Replies)
Discussion started by: LMHmedchem
11 Replies

9. Shell Programming and Scripting

Find header in a text file and prepend it to all lines until another header is found

I've been struggling with this one for quite a while and cannot seem to find a solution for this find/replace scenario. Perhaps I'm getting rusty. I have a file that contains a number of metrics (exactly 3 fields per line) from a few appliances that are collected in parallel. To identify the... (3 Replies)
Discussion started by: verdepollo
3 Replies

10. UNIX for Beginners Questions & Answers

How to print multiple required columns dynamically in a file using the header name?

Hi All, i am trying to print required multiple columns dynamically from a fie. But i am able to print only one column at a time. i am new to shell script, please help me on this issue. i am using below script awk -v COLT=$1 ' NR==1 { for (i=1; i<=NF; i++) { ... (2 Replies)
Discussion started by: balu1234
2 Replies

LEARN ABOUT DEBIAN

bup-margin

bup-margin(1)						      General Commands Manual						     bup-margin(1)

NAME

       bup-margin - figure out your deduplication safety margin

SYNOPSIS

       bup margin [options...]

DESCRIPTION

       bup margin  iterates  through  all  objects  in	your  bup repository, calculating the largest number of prefix bits shared between any two
       entries.  This number, n, identifies the longest subset of SHA-1 you could use and still encounter a collision between your object ids.

       For example, one system that was tested had a collection of 11 million objects (70 GB), and bup margin returned 45.  That  means  a  46-bit
       hash  would be sufficient to avoid all collisions among that set of objects; each object in that repository could be uniquely identified by
       its first 46 bits.

       The number of bits needed seems to increase by about 1 or 2 for every doubling of the number of objects.  Since SHA-1 hashes have 160 bits,
       that  leaves 115 bits of margin.  Of course, because SHA-1 hashes are essentially random, it's theoretically possible to use many more bits
       with far fewer objects.

       If you're paranoid about the possibility of SHA-1 collisions, you can monitor your repository by running bup margin occasionally to see	if
       you're getting dangerously close to 160 bits.

OPTIONS

       --predict
	      Guess  the offset into each index file where a particular object will appear, and report the maximum deviation of the correct answer
	      from the guess.  This is potentially useful for tuning an interpolation search algorithm.

       --ignore-midx
	      don't use .midx files, use only .idx files.  This is only really useful when used with --predict.

EXAMPLE

	      $ bup margin
	      Reading indexes: 100.00% (1612581/1612581), done.
	      40
	      40 matching prefix bits
	      1.94 bits per doubling
	      120 bits (61.86 doublings) remaining
	      4.19338e+18 times larger is possible

	      Everyone on earth could have 625878182 data sets
	      like yours, all in one repository, and we would
	      expect 1 object collision.

	      $ bup margin --predict
	      PackIdxList: using 1 index.
	      Reading indexes: 100.00% (1612581/1612581), done.
	      915 of 1612581 (0.057%)

SEE ALSO

       bup-midx(1), bup-save(1)

BUP

       Part of the bup(1) suite.

AUTHORS

       Avery Pennarun <apenwarr@gmail.com>.

Bup unknown-															     bup-margin(1)
All times are GMT -4. The time now is 12:34 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy