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Top Forums UNIX for Dummies Questions & Answers Check for not null column in a pipe delimited file Post 302974888 by RudiC on Sunday 5th of June 2016 03:44:53 PM
Old 06-05-2016
How about making it a bit more flexible? Try
Code:
awk '
NR==1   {MX = split(CHK, T, ",")
        }
        {for (i=1; i<=MX; i++)
           if ($(T[i]) == "") print "column " T[i] " is null at line " NR
        }
' FS="|" CHK="3,5,6,7,8" file
column 3 is null at line 1
column 6 is null at line 3
column 7 is null at line 6


Last edited by RudiC; 06-05-2016 at 04:48 PM.. Reason: Overlooked the "pipe" delimiter request.
This User Gave Thanks to RudiC For This Post:
 

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SPLIT(1)						      General Commands Manual							  SPLIT(1)

NAME
split - split a file into pieces SYNOPSIS
split [ option ... ] [ file ] DESCRIPTION
Split reads file (standard input by default) and writes it in pieces of 1000 lines per output file. The names of the output files are xaa, xab, and so on to xzz. The options are -n Split into n-line pieces. -e expression File divisions occur at each line that matches a regular expression; see regexp(6). Multiple -e options may appear. If a subex- pression of expression is contained in parentheses (...), the output file name is the portion of the line which matches the subex- pression. -f stem Use stem instead of x in output file names. -s suffix Append suffix to names identified under -e. -x Exclude the matched input line from the output file. -i Ignore case in option -e; force output file names (excluding the suffix) to lower case. SOURCE
/sys/src/cmd/split.c SEE ALSO
sed(1), awk(1) grep(1), regexp(6) SPLIT(1)
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