Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Grepping one file column from another file
Top Forums Shell Programming and Scripting Grepping one file column from another file Post 302881086 by Akshay Hegde on Thursday 26th of December 2013 12:49:31 PM
Old 12-26-2013
Another approach :
Code:
$ awk  'FNR==NR{A[$4]=$0;next}{x=0;for(i in A){split(A[i],X,":");if($2==X[2]){x=1;print $0,A[i]}}if(x==0)print}'  file2 file1
A B C D L E:B:C  
E F
G H G H R H:H:I:J

Last edited by Akshay Hegde; 12-26-2013 at 01:55 PM..
This User Gave Thanks to Akshay Hegde For This Post:
newbie83
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

grepping all lines of one file from another file

Hi First post on here hope you can help with something I have a file with a couple of thousand lines (all lines are one string long, i.e a number I have another file that is over 1 million lines long Example entry from file 1 123456 Example from file 2 123456 mjhyuihbn ... (5 Replies)
Discussion started by: nampahc
5 Replies

2. Shell Programming and Scripting

Grepping a file based on input from a second file

how to grep a file based on another input file File1 ashu 1 ninetwo hari qwer 6 givefour jan fghj 8 noeight mar vbmi 7 noput feb -- --- File2 noput noeight --- -- Taking the input of grep as File2, a search need to be made in File1 giving File3 as output: (7 Replies)
Discussion started by: er_ashu
7 Replies

3. Shell Programming and Scripting

Grepping from a point in a file to the end of the file

does any one know how to turn the equivalent of this command: awk '/2011 John Doe 8344/,0' /tmp/ops.log | egrep -c "received request" to something that would use egrep instead of awk? What the awk command does is, it searches the ops.log file for "2011 John Doe 8344". When it finds it,... (4 Replies)
Discussion started by: SkySmart
4 Replies

4. Shell Programming and Scripting

Grepping file and returning passed variable if the value does not exist in file at all.

I have a list of fields that I want to check a file for, returning that field if it not found at all in the file. Is there a way to do a grep -lc and return the passed variable too rather then just the count? I am doing some crappy work-around now but I was not sure how to regrep this for :0 so... (3 Replies)
Discussion started by: personalt
3 Replies

5. Shell Programming and Scripting

Grepping a file contents into another file

I have a file named as ucid.txt It has multiple rows of "id". I need to search and grep each line of it from a file named as pw_logs.txt and put the results into another file. Please help ! Thanks. (8 Replies)
Discussion started by: gopikrish81
8 Replies

6. Shell Programming and Scripting

Display file date after grepping a string in the file

Hi All, I need to recursively grep several folders for a MAC address and display the results with the date of the file name at the start. Even better would be if the final results were displayed chronologically so the newest file is always at the end. Oldest at the top, regardless of what... (8 Replies)
Discussion started by: quemalr
8 Replies

7. Programming

Grepping a column from multiple file

I have 20 files that look pretty much like this: 0.01 1 3822 4.97379915032e-14 4.96982253992e-09 0 0.01 3822 1 4.97379915032e-14 4.96982253992e-09 0 0.01 2 502 0.00993165137406 993.165137406 0 0.01 502 2 0.00993165137406 993.165137406 0 0.01 4 33 0.00189645523539 189.645523539 0 0.01 33 4... (5 Replies)
Discussion started by: kayak
5 Replies

8. Shell Programming and Scripting

Grepping text from one file in another file

Hello, I have a file with a large number of words each listed in sequential order one word per line. I want to search these words in another file which has the structure Both the files are large, but the words in the sourcefile are all available in the target file. I tried to grep... (2 Replies)
Discussion started by: gimley
2 Replies

9. UNIX for Dummies Questions & Answers

Grepping al values of a particular column in a file

Name Num_free Num_active Pct_act Max_Used Reuse_cnt Instance_Name --------------------------------- --------------- ----------- ------- ----------- ----------- ------------------------------ additional network memory 0 ... (2 Replies)
Discussion started by: Rajeshneemkar
2 Replies

10. Shell Programming and Scripting

ksh Script, Reading A File, Grepping A File Contents In Another File

So I'm stumped. First... APOLOGIES... my work is offline in an office that has zero internet connectivity, as required by our client. If need be, I could print out my script attempts and retype them here. But on the off chance... here goes. I have a text file (file_source) of terms, each line... (3 Replies)
Discussion started by: Brusimm
3 Replies

LEARN ABOUT LINUX

unshar

UNSHAR(1)						      General Commands Manual							 UNSHAR(1)

NAME

       unshar - unpack a shar file

SYNOPSIS

       unshar [ options ] [ file ... ]

DESCRIPTION

       Unshar  scans mail messages looking for the start of a shell archive.  It then passes the archive through a copy of the shell to unpack it.
       It will accept multiple files.  If no files are given, standard input is used.

OPTIONS

       Options have a one letter version starting with - or a long version starting with --.  The exception is --help and  --version,  which  does
       not have a short version.

       --version
	      Print the version number of the program on standard output, then immediately exits.

       --help Print a help summary on standard output, then immediately exits.

       -d DIRECTORY  --directory=DIRECTORY
	      Change directory to DIRECTORY before unpacking any files.

       -c  --overwrite
	      Passed  as  an option to the shar file.  Many shell archive scripts (including those produced by `shar' 3.40 and newer) accepts a -c
	      argument to indicate that existing files should be overwritten.

       -e  --exit-0
	      This option exists mainly for people who collect many shell archives into a single mail folder.  With this option, `unshar' isolates
	      each different shell archive from the others which have been put in the same file, unpacking each in turn, from the beginning of the
	      file towards its end.  Its proper operation relies on the fact that many shar files are terminated by a `exit 0' at the beginning of
	      a line.

	      Option -e is internally equivalent to -E "exit 0".

       -E STRING  --split-at=STRING
	      This option works like -e, but it allows you to specify the string that separates archives if `exit 0' isn't appropriate.

	      For  example,  noticing  that  most `.signatures' have a `--' on a line right before them, one can sometimes use `--split-at=--' for
	      splitting shell archives which lack the `exit 0' line at end.  The signature will then be skipped altogether with the headers of the
	      following message.

       -f  --force
	      The same as -c.

SEE ALSO

       shar(1)

DIAGNOSTICS

       Any message from the shell may be displayed.

AUTHORS

       The  shar  and  unshar  programs is the collective work of many authors.  Many people contributed by reporting problems, suggesting various
       improvements or submitting actual code.	A list of these people is in the THANKS file in the sharutils distribution.

REPORTING BUGS

       Report bugs to <bug-gnu-utils@gnu.org>.	Please put sharutils in the subject line.  It helps to spot the message.

								September 10, 1995							 UNSHAR(1)
All times are GMT -4. The time now is 05:50 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy