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Replace alphabets in a string with their ASCII values

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# 1  
Old 10-04-2016
Replace alphabets in a string with their ASCII values
hi. I have a requirement where I need to REPLACE all alphabets from an alphanumeric input string into their respective ASCII decimal value. For example:

If the input string is ABAC123, the output should be 65666567123

I am seeking a single line command, and I was trying searching for options of TR command.

Please help me.


thanks.
Kumarjit.
Last edited by rbatte1; 10-04-2016 at 07:05 AM.. Reason: Inserted ICODE tags
# 2  
Old 10-04-2016
Hello kumarjt,

Could you please try following and let us know if this helps you.
Code:
echo "ABAC123" | od -A n -t d1

Thanks,
R. Singh
# 3  
Old 10-04-2016
thanks for the lead Ravinder, but the output is not as expected.

I need 65666567123, but with the command you gave, output is 65 66 65 67 49 50 51 10


thanks.
Kumarjit


Moderator's Comments:
Mod Comment
Please wrap all code, files, input & output/errors in CODE tags.
It makes it far easier to read and preserves multiple spaces for indenting or fixed width data.
You can use ICODE tags for short strings in the flow of a sentence as I have done for you above.
[
Last edited by rbatte1; 10-04-2016 at 07:07 AM.. Reason: Added ICODE tags
# 4  
Old 10-04-2016
Hi R. Singh,
Note that the output kumarjt wants to produce contains no spaces and only translates alphabetic characters (leaving numeric input characters unchanged) producing ambiguous output when numeric characters are included in the input .

With kumarjt's specified behavior, the output from both of the following input strings:
ABCA653 and ABCAA3 is the same string 65666765653.

Hi kumarjt,
The tr utility translates one character to one character, it does not translate a single character to a pair of characters.
# 5  
Old 10-04-2016
Hi,
with perl:
Code:
echo ABAC123 | perl -ne 'chomp;print map /[0-9]/ ? $_ : ord, split //'
65666567123

Regards.
# 6  
Old 10-04-2016
Try
Code:
echo "ABAC123" | od -An -ctd1 | awk 'NR == 1 {split ($0, T); next} {for (i=1; i<=NF; i++) printf "%s", ($i>=65)?$i:($i<32)?"":T[i]; printf RS}' 
65666567123

... may need some refinement ...
# 7  
Old 10-04-2016
Quote:
Originally Posted by kumarjt
thanks for the lead Ravinder, but the output is not as expected.
I need 65666567123, but with the command you gave, output is 65 66 65 67 49 50 51 10
thanks.
Kumarjit
[
Hello kumarjt,

Could you please try following and let me know if this helps you.
Code:
awk -vs1="'" -vval="ABAC123" BEGIN'{num=split(val,array,"");for(i=1;i<=num;i++){if(array[i] ~ /[[:alpha:]]/){Q=Q?Q array[i]:array[i]} else {printf("%d",array[i]) >> "temp_file2"}};system("printf " Q "| od -A n -t d1 > temp_file;awk " s1 "{gsub(/ /,X,$0);V=V?V $0:$0} END{print V}" s1 " temp_file temp_file2;rm temp_file temp_file2");}'

Output will be as follows.
Code:
65666567123

So above command will look for only alphabets and convert them into their ASCII their values with printing digits values as it is.
EDIT: Adding a non-one liner form of above solution too now.
Code:
 awk -vs1="'" -vval="ABAC123" BEGIN'{
                                        num=split(val,array,"");
                                        for(i=1;i<=num;i++){
                                                                if(array[i] ~ /[[:alpha:]]/){
                                                                                                Q=Q?Q array[i]:array[i]
                                                                                            }
                                                                else                        {
                                                                                                printf("%d",array[i]) >> "temp_file2"
                                                                                            }
                                                           };
                                        system("printf " Q "| od -A n -t d1 > temp_file;awk " s1 "{gsub(/ /,X,$0);V=V?V $0:$0} END{print V}" s1 " temp_file temp_file2;rm temp_file temp_file2");
                                   }
                                  '

Thanks,
R. Singh
Last edited by RavinderSingh13; 10-04-2016 at 09:21 AM.. Reason: Adding a non-one liner form of above solution too now.
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