Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Print previous (non zero)
Top Forums Shell Programming and Scripting Print previous (non zero) Post 302845601 by ahamed101 on Thursday 22nd of August 2013 01:51:59 AM
Old 08-22-2013
There you go...

Code:
#!/bin/bash
awk '
        $1{v=$1}                #if there is a value in the first column ie $1, then store that value to the varable "v"
        !/$1/{$1=v}             #if the first column value is 0, then assign the first column with the value stored in "v" which is 
                                #basically from the previous record
        1                       #Print everything
' infile

--ahamed
This User Gave Thanks to ahamed101 For This Post:
RavinderSingh13
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Print previous, current and next line using sed

Hi, how can i print the previous, current and next line using sed? current line is the matching line. The following prints all lines containing 'Failure' and also the immediate next line cat $file | sed -n -e '/Failure/{N;p;}' Now, i also want to print the previous line too. Thanks,... (8 Replies)
Discussion started by: ysrinu
8 Replies

2. Shell Programming and Scripting

Referring from the print of the previous command

Hi, I am a newbie in SHell Programming. I want to ask something about referring the result of the previous command in Shell-Prog. For example : bnm@dsds~> ifconfig eth0 Link encap:Ethernet HWaddr 00:0B:CD:85:A5:8A inet addr:192.168.0.2 Bcast:192.168.0.225 Mask... (2 Replies)
Discussion started by: bobb
2 Replies

3. Shell Programming and Scripting

Search for a pattern in a file and print previous lines from a particular point

Hi, I am new to ksh scripting and I have a problem. I have a file in which I have to search for a particular pattern say 'a' then from that line I need to search for another pattern say 'b' in the previous lines and thne print the file from pattern 'b' till the end of file. For eg: ... (2 Replies)
Discussion started by: umaislearning
2 Replies

4. Shell Programming and Scripting

how Print previous line ..........

HELLO...I wanted to ask you, than sure know unix more than me, as I can obtain the following solution: I have a file with rows of the type: CIAO COME STAI PERCHE COME STAI CIAO COME VA ALLO CHE FACCIAMO ................. I would that if in a line is present the word (for example) " CHE... (9 Replies)
Discussion started by: fabi20
9 Replies

5. Shell Programming and Scripting

Print the previous line

My requirement is that when ever search criteria matchs in log file, the previous line just above the search word as well as search word should be print. sample log file --03-19T11:26 xxx create version "a.sh@@/main/6" "104157 " --03-18T16:01 xxx create version "a.sh@@/main/5" ... (6 Replies)
Discussion started by: jadoo_c2
6 Replies

6. UNIX for Dummies Questions & Answers

Awk to print data from current and previous line

Hi guys, I have found your forum super useful. However, right now I am stuck on a seemingly "simple" thing in AWK. I have two columns of data, the first column in Age (in million years) and the second column is Convergence Rate (in mm/yr). I am trying to process my data so I can use it to... (2 Replies)
Discussion started by: awk_noob_456
2 Replies

7. Shell Programming and Scripting

Print a field from the previous line

plz help me!! I have this file , 3408 5600 3796 6035 4200 6285 4676 0 40 1554 200 1998 652 2451 864 2728 1200 0 I want it like if $2==0,replace it with field from the previous line+500 say here the o/p would be like 3408 5600 3796 6035 4200 6285... (16 Replies)
Discussion started by: Indra2011
16 Replies

8. Shell Programming and Scripting

How to grep and print the next and previous N lines after the hit

Hello, I know that gnu grep has option of -A and -B to extra previous and next lines. But I'm using HP UX and its grep does not support these options. BID="0/0/6/1/1.145.17.255.0.0.0" I need to search a file using $BID and get next 5 lines and previous 5 lines separately. Please... (1 Reply)
Discussion started by: reddyr
1 Replies

9. UNIX for Dummies Questions & Answers

Command to print previous year in UNIX

hi all, I use date +%Y which gives Current year. Requirement: I want previous year to be printed. Please help me. Note: I tried date +%d/%m/%Y -d "-1 years" which is not working. (10 Replies)
Discussion started by: wasim999
10 Replies

10. AIX

Print nth previous line after match

Please help me print nth line after match awk or sed one line command. (3 Replies)
Discussion started by: sushma123
3 Replies

LEARN ABOUT PHP

db2_field_display_size

DB2_FIELD_DISPLAY_SIZE(3)						 1						 DB2_FIELD_DISPLAY_SIZE(3)

db2_field_display_size - Returns the maximum number of bytes required to display a column

SYNOPSIS

       int db2_field_display_size (resource  $stmt, mixed  $column)

DESCRIPTION

	Returns the maximum number of bytes required to display a column in a result set.

PARAMETERS

	      o $stmt
		- Specifies a statement resource containing a result set.

	      o $column
		-  Specifies  the  column in the result set. This can either be an integer representing the 0-indexed position of the column, or a
		string containing the name of the column.

RETURN VALUES

	Returns an integer value with the maximum number of bytes required to display the specified column. If the column does not  exist  in  the
       result set, db2_field_display_size(3) returns FALSE.

SEE ALSO

       db2_field_name(3), db2_field_num(3), db2_field_precision(3), db2_field_scale(3), db2_field_type(3), db2_field_width(3).

PHP Documentation Group 												 DB2_FIELD_DISPLAY_SIZE(3)
All times are GMT -4. The time now is 12:59 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy