Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: awk to ignore multiple rows based on a condition
Top Forums Shell Programming and Scripting awk to ignore multiple rows based on a condition Post 302967481 by ks_reddy on Wednesday 24th of February 2016 06:03:29 AM
Old 02-24-2016
awk to ignore multiple rows based on a condition
All,
I have a text file(Inputfile.csv) with millions of rows and 100 columns. Check the sample for 2 columns below.
Code:
Key,Check
A,1
A,2
A,
A,4
B,0
B,1
B,2
B,3
B,4
....
million rows.

My requirement is to delete all the rows corresponding to all the keys which ever has at least one blank cell in Check column.

Outputfile.csv
Code:
Key,Check
B,0
B,1
B,2
B,3
B,4

Currently I am using the following code
Code:
awk -F, '$1==""' inputfile.csv |awk -F, '{print $1}' |uniq >list_of_keys_to_ignore.txt
for each in `cat list_of_keys_to_ignore.txt`; do grep -v $each inputfile.csv; done >Outputfile.csv

But this script is taking lot of time(especially grep -v) as I have millions of rows and 100's of columns.

Please suggest a faster alternative to my above code.

Thanks and Regards
Sidda
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

awk to select rows based on condition on column

I have got a file like this 003ABC00281020091005000100042.810001 ... (8 Replies)
Discussion started by: Maruti
8 Replies

2. Shell Programming and Scripting

Getting rip of multiple rows based on column1

Hi, I want to get rid of multiple rows (duplicate, triplicate etc..) for only column 1. e.g. iu 2 iu 1 iu 3 k 4 jk 3 nm 4 nm 2 output k 4 jk 3 thanks (7 Replies)
Discussion started by: phil_heath
7 Replies

3. Shell Programming and Scripting

Removing rows based on a different file (ignore my earlier post - there was a mistake).

Sorry I made a mistake in my last post (output is suppose to be the opposite). Here is a revised post. Hi, I am not sure if this has already been asked (I tried the search but the search was too broad). Basically I want to remove rows based on another file. So file1 looks like this (tab... (3 Replies)
Discussion started by: kylle345
3 Replies

4. Shell Programming and Scripting

Combining multiple rows in single row based on certain condition using awk or sed

Hi, I'm using AIX(ksh shell). > cat temp.txt "a","b",0 "c",bc",0 "a1","b1",0 "cc","cb",1 "cc","b2",1 "bb","bc",2 I want the output as: "a","b","c","bc","a1","b1" "cc","cb","cc","b2" "bb","bc" I want to combine multiple lines into single line where third column is same. Is... (1 Reply)
Discussion started by: samuelray
1 Replies

5. Shell Programming and Scripting

Selecting rows from a pipe delimited file based on condition

HI all, I have a simple challenge for you.. I have the following pipe delimited file 2345|98|1809||x|969|0 2345|98|0809||y|0|537 2345|97|9809||x|544|0 2345|97|0909||y|0|651 9685|98|7809||x|321|0 9685|98|7909||y|0|357 9685|98|7809||x|687|0 9685|98|0809||y|0|234 2315|98|0809||x|564|0 ... (2 Replies)
Discussion started by: nithins007
2 Replies

6. Shell Programming and Scripting

awk based script to ignore all columns from a file which contains character strings

Hello All, I have a .CSV file where I expect all numeric data in all the columns other than column headers. But sometimes I get the files (result of statistics computation by other persons) like below( sample data) SNO,Data1,Data2,Data3 1,2,3,4 2,3,4,SOME STRING 3,4,Inf,5 4,5,4,4 I... (9 Replies)
Discussion started by: ks_reddy
9 Replies

7. Shell Programming and Scripting

awk code to ignore the first occurence unknown number of rows in a data column

Hello experts, Shown below is the 2 column sample data(there are many data columns in actual input file), Key, Data A, 1 A, 2 A, 2 A, 3 A, 1 A, 1 A, 1 I need the below output. Key, Data A, 2 A, 2 A, 3 A, 1 A, 1 A, 1 (2 Replies)
Discussion started by: ks_reddy
2 Replies

8. Shell Programming and Scripting

Extracting rows and columns in a matrix based on condition

Hi I have a matrix with n rows and m columns like below example. i want to extract all the pairs with values <200. Input A B C D A 100 206 51 300 B 206 100 72 48 C 351 22 100 198 D 13 989 150 100 Output format A,A:200 A,C:51 B,B:100... (2 Replies)
Discussion started by: anurupa777
2 Replies

9. Shell Programming and Scripting

Convert rows to columns based on condition

I have a file some thing like this: GN Name=YWHAB; RC TISSUE=Keratinocyte; RC TISSUE=Thymus; CC -!- FUNCTION: Adapter protein implicated in the regulation of a large CC spectrum of both general and specialized signaling pathways GN Name=YWHAE; RC TISSUE=Liver; RC ... (13 Replies)
Discussion started by: raj_k
13 Replies

10. Shell Programming and Scripting

Combine multiple rows based on selected column keys

Hello I want to collapse a file with multiple rows into consolidated lines of entries based on selected columns as the 'key'. Example: 1 2 3 Abc def ghi 1 2 3 jkl mno p qrts 6 9 0 mno def Abc 7 8 4 Abc mno mno abc 7 8 9 mno mno abc 7 8 9 mno j k So if columns 1, 2 and 3 are... (6 Replies)
Discussion started by: linuxlearner123
6 Replies

LEARN ABOUT DEBIAN

xlhtml

xlhtml(1)						      General Commands Manual							 xlhtml(1)

NAME

       xlhtml - A program for converting Microsoft Excel Files .xls

SYNOPSIS

       xlhtml  [-a] [-asc] [-csv] [-xml] [-bcNNNNNN] [-bi/path] [-c] [-dp] [-v] [-fw] [-m] [-nc] [-nh] [-tcNNNNNN] [-te] [-xc:N-N] [-xp:N] [-xr:N-
       N] FILE

DESCRIPTION

       This manual page explains the xlhtml program. The program xlhtml is used to convert Microsoft Excel Spreadsheet files into either  html	or
       tab  delimitted ASCII. The program can be interfaced with helper scripts for viewing email attachments. Most use of this program is through
       the helper scripts and one would probably rarely resort to using the commandline interface.

OPTIONS

       -a     aggressively optimize html by removing </TR> </TD> or VALIGN="bottom". Some older browsers may not display properly in this mode.

       -asc   Ascii out of -dp and extraction data (-xc, -xp, -xr)

       -csv   Output in Comma Separated Values of -dp and extraction data (-xc, -xp, -xr)

       -xml   Output in XML of -dp and extraction data (-xc, -xp, -xr)

       -bc    Override the background color. e.g. -bc808080	for gray

       -bi    Use background image. e.g. -bi/home/httpd/icon/tar.gif

       -c     Centers the tables horizontally

       -dp    Dump page count and max columns and rows per page

       -v     Prints program version

       -fw    suppress formula warnings about accuracy

       -m     No encoding for multibyte

       -nc    tells it not to colorize the output.

       -nh    Suppress header and body tags in html output

       -tc    Override the text color. e.g. -tcFF0000	  for red

       -te    Trims empty rows & columns at the edges of a worksheet

       -xc    Columns (separated by a dash) for extraction (zero based)

       -xp    Page for extraction (zero based), one page only

       -xr    Rows (separated by a dash) to be extracted (zero based)

       An example of the extraction command line is: xlhtml -fw -asc -xp:0 -xr:2-6 -xc:0-1 Test.xls

       The extraction output is: Formatted output of cells by column left to right, columns separated by a tab, end of row is: 0x0A, end of  file:
       



AUTHOR

       Steve Grubb, Charles N Wyble

xlhtml								   May 15, 2002 							 xlhtml(1)
All times are GMT -4. The time now is 01:44 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy