Unix:
To see the unusual characters in a file in octal (the less unusual characters come out as \x. e.g. Tab is "\t").
Once you know the octal representation you can get the character into an environment variable with unix echo. My echo doesn't have the "-n" switch (no newline).
e.g. For the simple case of a tab character:
We can then use ${TAB} in a sed.
The common characters are listed in unix "man ascii". In your case the character is probably a higher value than those in "man ascii" but this "man" page is a good reference for converting between number bases (octal, decimal, hexadecimal).
Now for M$ Windows:
Once you have the octal value of the character you can convert to decimal (mathematics).
Say if you need to generate the unusual character in Windows Notepad:
Ensure that numlock is on.
Press and hold ALT then type the decimal version of the character on the numeric keyboard.
For example, the Euro Sign (€) is ALT+0128 .
Last edited by methyl; 08-10-2009 at 07:03 PM..
Reason: Various typos and missing tags
a silly question but is there a way to display individual ascii values
say if i type 65 it will display the letter instead?
thanks fo any help. (3 Replies)
I'm a question:
the expresiion 'expr $a +1' use the caracter --> ' (is not shift+ ? !!!)
what is the code ascii for generate this caracter ??????
tank's (3 Replies)
Hi gurus,
I have a file in unix with ascii values. I need to convert all the ascii values in the file to ascii characters. File contains nearly 20000 records with ascii values. (10 Replies)
Good evening, everybody
A good math friend told me that it would be possible to shrink the size of the numerical datas I produce with a physical simulation code I programmed for my PhD.
It usually writes at least 100 GB to complete the simulation, and it seems that it is too high. There are... (7 Replies)
Hello,
When I run this UNIX code without the -t option it gives me the desired results.
The code keeps the record with the greatest datetime based on the key columns.
I sort it first then sort it again with the -u option, that's it.
I need to have a variable to specify an ASCII character... (2 Replies)
Hello,
With bash-script (ubunto server) I'm trying to read a binary file and, for each character, give back its ascii code (including extended ascii). For example:
HEX => ASCII => PRINT
f5 => 245 => õ
50 => 80 => P
To load the binary file into a variable I tried in this way: ... (2 Replies)
Hi All,
I have an ascii file in which few columns are having hex values which i need to convert into ascii. Kindly suggest me what command can be used in unix shell scripting?
Thanks in Advance (2 Replies)
<Any suggestion how to create a file where the values are separated by ASCII code 1,with data extracted from a table using shell script The format is :/>
<columnname1(binary1)columnvalue(binary1)columnname2(binary1)columnvalue(binary1)columnname3(binary1)columnvalue... 1st row/>... (6 Replies)
Discussion started by: dasun
6 Replies
LEARN ABOUT BSD
ctype
CTYPE(3) Library Functions Manual CTYPE(3)NAME
isalpha, isupper, islower, isdigit, isxdigit, isalnum, isspace, ispunct, isprint, isgraph, iscntrl, isascii, toupper, tolower, toascii -
character classification macros
SYNOPSIS
#include <ctype.h>
isalpha(c)
. . .
DESCRIPTION
These macros classify ASCII-coded integer values by table lookup. Each is a predicate returning nonzero for true, zero for false. Isascii
and toascii are defined on all integer values; the rest are defined only where isascii is true and on the single non-ASCII value EOF (see
stdio(3S)).
isalpha c is a letter
isupper c is an upper case letter
islower c is a lower case letter
isdigit c is a digit
isxdigit c is a hex digit
isalnum c is an alphanumeric character
isspace c is a space, tab, carriage return, newline, vertical tab, or formfeed
ispunct c is a punctuation character (neither control nor alphanumeric)
isprint c is a printing character, code 040(8) (space) through 0176 (tilde)
isgraph c is a printing character, similar to isprint except false for space.
iscntrl c is a delete character(0177) or ordinary control character (less than 040).
isascii c is an ASCII character, code less than 0200
tolower c is converted to lower case. Return value is undefined if not isupper(c).
toupper c is converted to upper case. Return value is undefined if not islower(c).
toascii c is converted to be a valid ascii character.
SEE ALSO ascii(7)7th Edition May 12, 1986 CTYPE(3)