I tried to find out the unprintable characters in data filein unix. Code :
#!/bin/ksh
export SRCFILE='/data/temp1.dat'
while read line
do
len=lenght($line)
for( $i = 0; $i < $len; $i++ ) {
if( ord(substr($line, $i, 1)) > 127 )
{
print "$line\n";
last;
}
done < $SRCFILE
The code is not working , please help me in getting a solution for the above query.
You can use grep
for finding non-printable characters in a file, something like the following, which finds all non-printable-ASCII and all non-ASCII:
grep -P -n "[\x00-\x1F\x7F-\xFF]" input_file
-P
gives you the more powerful Perl regular expressions (PCREs) and -n
shows line numbers.
If your grep
doesn't support PCREs, I'd just use Perl for this directly:
perl -ne '$x++;if($_=~/[\x00-\x1F\x7F-\xFF]/){print"$x:$_"}' input_file
You may try something like this :
grep '[^[:print:]]' filePath
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