How to get ascii value (decimal ) of chars in linux?

dreams · 01-26-2006, 02:24 AM

How to get ascii value (decimal ) of chars in linux ?
e.g.

ascii a
-> result: 97

Is there any command like that?

thank u so much

StringCheesian · 01-26-2006, 03:02 AM

hexdump
man hexdump

dreams · 01-26-2006, 03:30 AM

hello StringCheesian
hexdump 's parameter must be a file
It couldn't be a char
what i want to get is , input a char followed by a command , and the output is the ascii value

timmeke · 01-26-2006, 05:49 AM

Have you tried looking at "printf"?
If you know it from C, it is pretty much the same.
"printf" allows you to print the value of a shell variable, in different formats.
Try printing the char as an integer (%d), octal or hex number.

Most shells have "printf" as a built-in command.

pixellany · 01-26-2006, 08:35 AM

or type "ascii" into Google and find one of a bazillion "decoder rings" published by good samaritans.

berbae · 01-26-2006, 09:11 AM

PTrenholme · 01-26-2006, 09:36 AM

Quote:

Originally Posted by dreams

hello StringCheesian
hexdump 's parameter must be a file
It couldn't be a char
what i want to get is , input a char followed by a command , and the output is the ascii value

Not quite true: It can be stdin from a pipe:

Code:

$ echo -n a | hexdump -d
0000000   00097
0000001

or, if you just want the decmil value:

Code:

$ echo -n a | hexdump -d | gawk '{print $2}'
00097

Edit:

Or, if you want an ascii command:

Code:

$ cat ascii
#! /bin/bash
echo `echo -n $1 | hexdump -d | gawk '{print $2}'`
$ ./ascii a
00097

dreams · 01-26-2006, 08:34 PM

I have handled followed by your suggestions.
Thank u so much indeed everyone.

marozsas · 01-27-2006, 07:43 AM

man ascii gives to you the same.