How to find non-printable characters in the file?
21,051
Solution 1
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
Solution 2
You may try something like this :
grep '[^[:print:]]' filePath
Author by
user3759763
Updated on July 09, 2022Comments
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user3759763 almost 2 years
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.