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writing shell script to find line of invalid characters

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# 1  
Old 03-17-2009
writing shell script to find line of invalid characters
Hi,

I have to write s script to check an input file for invalid characters. In this script I have to find the exact line of the invalid character. If the input file contain 2 invalid character sat line 10 and 17, the script will show the value 10 and 17. Any help is appreciated.
# 2  
Old 03-18-2009
#!/usr/bin/sh;
cntr=1;
while read myline
do
cntr=`expr $cntr + 1`;
if [ `echo $myline | egrep '[a-z]'` ]; then
echo $cntr;
fi
done < txt

Here i am matching for the lines which contains a-z . Alter ur script accordingly

Cheers
# 3  
Old 03-18-2009
Quote:
Originally Posted by beginner82
Hi,

I have to write s script to check an input file for invalid characters. In this script I have to find the exact line of the invalid character. If the input file contain 2 invalid character sat line 10 and 17, the script will show the value 10 and 17. Any help is appreciated.
in that case try
Code:
 
 awk '$0 ~ /anycharacter/{print "line no : "NR}' filename

# 4  
Old 06-04-2009
Quote:
Originally Posted by manaswinig
I need to print lines with character S at nth position in a file...can someone pl help me with appropriate awk command for this
Please don't hijack threads - start your own.
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