Login or Register to Ask a Question and Join Our Community


UNIX for Dummies Questions & Answers

Find Null values in Columns and fail execution by displaying error message

 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers Find Null values in Columns and fail execution by displaying error message
# 8  
Old 04-08-2015
Two of your requirements (excluding headers and exit with code 16 if fields 2 or 3 are empty in a file) can be fulfilled easily with
Code:
awk     'function PR()  {print FILENAME, V?": Null values " V:": All records good."}

         FNR==1         {next}
         !$2            {V=102}
         !$3            {V=103}

         FNR==2 && NR>2 {PR(); if (V) exit 16}

        ' FS="," pf_[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9].csv

Unfortunately, awk doesn't know if it is operationg on the last line of a file, so we'd need to save each line and then check for FNR==1 (or the END condition). Try yourself and come back if you hit a brick wall.
 
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Check for null values in a columns. I have dozen of CSV files in a directory.

Hi Folks, I'm trying to write a simple file sanity check script. I have a directory with dozen CSV files containing id,edname,firstname,lastname,suffix,email. I like to write a awk script to check if first field contain a number and is not empty. and fields number 3,4 & 6 are not empty and... (3 Replies)
Discussion started by: dc34684
3 Replies

2. Shell Programming and Scripting

Multiple columns replace with null values.

I am trying to replace the partcular columns(Col3,col5,col20,col44,col55,co56,col59,col60,col61,col62,col74,col75,col88,col90,col91,col93,col94,col95) with empty Input file Col1,col2,col3,col4,col5------,col100 1,2,3,4,5,---------,100 3,4,5,6,7,---------,300 Output : ... (3 Replies)
Discussion started by: onesuri
3 Replies

3. Shell Programming and Scripting

Find for line with not null values at nth place in pipe delimited file

Hi, I am trying to find the lines in a pipe delimited file where 11th column has not null values. Any help is appreciated. Need help asap please. thanks in advance. (3 Replies)
Discussion started by: manikms
3 Replies

4. UNIX for Dummies Questions & Answers

Eliminate error message (/dev/null)?

I am trying to eliminate an error message from a script. This is the error message: find: stat() error /usr/openv/netbackup/db/images/KUMAX: No such file or directory if ]; then runthiscommand=`su nxadm -c "ssh -t $new3 exec /bin/sh -s">/tmp/filew3 2>/tmp/error.txt<<EOF ... (1 Reply)
Discussion started by: newbie2010
1 Replies

5. UNIX for Dummies Questions & Answers

Find duplicated values in two columns out of three

hi! could u help in the following? I have the data (long list!) that looks like (three coumns white space separated): rs3094315 0.0665173 742429 rs12562034 0.0738998 758311 rs3934834 0.396449 995669 rs9442372 0.402693 1008567 rs3737728 0.406271 1011278 rs6687776 0.435429 1020428 rs9651273... (4 Replies)
Discussion started by: kush
4 Replies

6. Shell Programming and Scripting

Check for null values in columns

Hi , I have below data with fixed with of 52 bytes having three columns value data. 01930 MA GLOUCESTER 02033 02025 COHASSET 01960 MA ... (3 Replies)
Discussion started by: sonu_pal
3 Replies

7. Shell Programming and Scripting

How to list Matching Directories OR NULL w/o error message?

I want to be able to get all the directories in a path into a variable array, BUT if there ARE NO directories I want the Variable to be NULL and not echo any error message! If there ARE directories, this will get the list of the directories whose name begins with the string "20":... (6 Replies)
Discussion started by: pgorbas
6 Replies

8. Shell Programming and Scripting

find error?? find / -name "something.txt" 2>/dev/null

why is this giving me errors? i type this in: find / -name "something.txt" 2>/dev/null i get the following error messages: find: bad option 2 find: path-list predicate-list :confused: (5 Replies)
Discussion started by: magiling
5 Replies

9. Shell Programming and Scripting

Need to return fail or pass from shell script on the basis of pl/sql code execution

Hi guys, I am quite new in shell scripting. I am tring to promote some oracle jobs into control-M. In control-M, I am calling a script which establishes a connection with database and execute some procedures. Now I want if that PL/sql Block got failed script should return failure to... (2 Replies)
Discussion started by: alok1301
2 Replies

10. Shell Programming and Scripting

How to check Null values in a file column by column if columns are Not NULLs

Hi All, I have a table with 10 columns. Some columns(2nd,4th,5th,7th,8th and 10th) are Not Null columns. I'll get a tab-delimited file and want to check col by col and generate seperate error code for each col eg:102 if 2nd col value is NULL and 104 if 4th col value is NULL so on... I am a... (7 Replies)
Discussion started by: Mandab
7 Replies
Login or Register to Ask a Question

LEARN ABOUT DEBIAN

bb-csvinfo.cgi

BB-CSVINFO.CGI(1)					      General Commands Manual						 BB-CSVINFO.CGI(1)

NAME

       bb-csvinfo.cgi - CGI program to show host information from a CSV file

SYNOPSIS

       bb-csvinfo.cgi

DESCRIPTION

       bb-csvinfo.cgi  is  invoked  as	a CGI script via the bb-csvinfo.sh CGI wrapper.  Based on the parameters it receives, it searches a comma-
       separated file for the matching host, and presents the information found as a table.

       bb-csvinfo.cgi is passed a QUERY_STRING environment variable with the following parameters:

	  key (string to search for, typically hostname)
	  column (columnnumber to search - default 0)
	  db  (name of the CSV database file in $BBHOME/etc/, default hostinfo.csv)
	  delimiter (delimiter character for columns, default semi-colon)

       CSV files are easily created from e.g. spreadsheets, by exporting them in CSV format. You should have one host per  line,  with	the  first
       line  containing  the  column headings. Despite their name, the default delimiter for CSV files is the semi-colon - if you need a different
       delimiter, invoke bb-csvinfo.cgi with the "delimiter=<character>" in the query string.

Example usage
       This example shows how you can use the bb-csvinfo CGI. It assumes you have a CSV-formatted file with information about the hosts stored	as
       $BBHOME/etc/hostinfo.csv, and the hostname is in the first column of the file.

       Use with the bbgen --docurl
	      The  --docurl  option to bbgen(1) sets up all of the hostnames on your Xymon webpages to act as links to a CGI script. To invoke the
	      bb-csvinfo CGI script, run bbgen with the option

		 --docurl=/cgi-bin/bb-csvinfo.sh?db=hostinfo.csv&key=%s

SEE ALSO

       bb-hosts(5), hobbitserver.cfg(5), bbgen(1)

Xymon							    Version 4.2.3:  4 Feb 2009						 BB-CSVINFO.CGI(1)