How to use sort with null values? Post: 302649521

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handling null values in files

Hi , I have a script where i will remove header and trailer record and ftp to another server. I'm using the code: latestfilename=`ls filename_* | tail -1` echo "Latest filename = $latestfilename" sed '1d;$d' $latestfilename > a.ftpedfile I have an issue if input data is having null...

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comparing the null values in the unix

hi all, iam new to this forum.i have to submit the script EOD.so please help me. my requirement is to compare two null values..iam trying to compare two null values :One null value output of the storedprocedure and another iam giving spaces in script. it is giving the error...

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identifying null values in a file

I have a huge file with 20 fileds in each record and each field is seperated by "|". If i want to get all the reocrds that have 18th or for that matter any filed as null how can i do it? Please let me know

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How to Compare Null values??

Hi, Can someone help me comparing Null values. Scenario is as follows: I have a variable which "cache_prd" which can have either some integer or nothing(Null) if it is integer I have to again do some comparision but these comparisons give me this error:( "line 32: [: 95: unary operator...

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Sort command which ignores NULL

Dear all, I have a file as below 100||kjhkjhkjhkjhk 200|TR|jvsjfhskfhskfhsdh 300|BH|kjlkjljlkj 600||dadsadasdada ||ffsdfsf |YU|popopop 900||mlml when I apply the below sort command, results obtained displayed below- cut -f1,2 -d"|" test.txt|sort -u 100| 200|TR 300|BH 600| 900|...

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sorting null values

Hi I have a file with the values abc res set kls lmn ops i want to sort this file with the null values at the bottom of the file OUTPUT should look like this abc kls lmn ops

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Averaging each row with null values

Hi all, I want to compute for the average of a file with null values (NaN) for each row. any help on how to do it. the sample file looks like this. 1.4 1.2 1.5 NaN 1.6 1.3 1.1 NaN 1.3 NaN 2.4 1.3 1.5 NaN 1.5 NaN 1.2 NaN 1.4 NaN I need to do a row-wise averaging such that it will sum only...

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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 ...

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Check null values column

hi, I had a small question.I had a file from which i need to extract data. I have written the below script to check if the file exists and if it exists extract requierd columns from the file. IFILE=/home/home01/Report_1.csv OFILE=/home/home01/name.csv.out1 if #Checks if file exists...

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Printing null values in awk

Hi, I have a csv file with given details abc.txt 123,ra,point,,there 232,ba,points,home,pheer I want to get those values and store them in different variables: Code: while read line do echo $line |awk -F"," '{print $1" "$2" "$3" "$4" "$5"}'|read dbt_acct val_dt crncy AMT...

LEARN ABOUT OSF1

ppmtopgm

ppmtopgm(1)						      General Commands Manual						       ppmtopgm(1)

NAME

       ppmtopgm - convert a portable pixmap into a portable graymap

SYNOPSIS

       ppmtopgm [ppmfile]

DESCRIPTION

       Reads  a  portable  pixmap  as  input.  Produces a portable graymap as output.  The output is a "black and white" rendering of the original
       image, as in a black and white photograph.  The quantization formula used is .299 r + .587 g + .114 b.

       Note that although there is a pgmtoppm program, it is not necessary for simple conversions from pgm to ppm , because any  ppm  program  can
       read  pgm  (and	pbm  ) files automatically.  pgmtoppm is for colorizing a pgm file.  Also, see ppmtorgb3 for a different way of converting
       color to gray.  And ppmdist generates a grayscale image from a color image, but in a way that makes it easy to differentiate  the  original
       colors, not necessarily a way that looks like a black and white photograph.

QUOTE

       Cold-hearted orb that rules the night
       Removes the colors from our sight
       Red is gray, and yellow white
       But we decide which is right
       And which is a quantization error.

SEE ALSO

       pgmtoppm(1),ppmtorgb3(1),rgb3toppm(1),ppmdist(1),ppm(5),pgm(5)

AUTHOR

       Copyright (C) 1989 by Jef Poskanzer.

								   10 April 2000						       ppmtopgm(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

handling null values in files

Discussion started by: ammu

2. Shell Programming and Scripting

comparing the null values in the unix

Discussion started by: bbc17484

3. Shell Programming and Scripting

identifying null values in a file

Discussion started by: dsravan

4. UNIX for Advanced & Expert Users

How to Compare Null values??

Discussion started by: Yagami