osx terminal how to get ascii code for acharacter

Is there any way to do this Ive tried using Emoji and Symbols from the Edit menu, but its not in there.

It doesnt have a glyph, but if you double click it should be inserted.

I think this would work too, but the character map is more convenient.

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At the leading edge of input you need to know char values as soon as you read them, and you need their sizes (especially when counting columns), and you need characters to be whole characters.

It seems its done on printf side (ie, in the shell, A is indeed 2 chars, a and a A.

And in the printf context, it is converted to the ascii value of A, (and is finally printed as a decimal thanks to the d.

In fact, its installed on my system and all I get from man ascii is its man page.

The font as confirmed by iceweasels web console is DejaVu Sans and Ive got ttf-dejavu ttf-dejavu-core ttf-dejavu-extra packages installed which come from Debian with upstream at dejavu-fonts.org.

So my first answer is a short one-line command to get the ASCII values for the alphabet.

It generates the following output (which has been filtered through sed -n l for printabilitys sake).

The strings might be represented with octal ranges like 2001-77, 100-177, 200-277, 300-377, where byte 128 is used as a place-holder for NUL.

In that way they can be referenced in the function without needing to generate them again each time they are needed.

When eval does define the second ctbl() function the first will cease to be.

The top loop will quote any quotes in the values of any variables it might want to use, and then stack all of the results in its positional parameters.

And if it does, the second line immediately truncates its first argument to only its first character - because the function only handles a character at a time.

Importantly, it does this in the current locale context, which means that if a character might comprise more than a single byte, then, provided the shell properly supports multi-byte chars, it will not discard any bytes except those which are not in the first character of its first argument.

From this point on, a character can only consist of a single byte, and so if there were multiple bytes in the first character of its first argument, these should now be each addressable as individual characters in their own right.

In most cases it will probably execute only once per call, but, if the shell in which ctbl() is defined properly handles multi-byte characters, it might loop.

The same is true of the two case pattern command substitutions.

This function does not ever call a subshell or any other command.

It will also never attempt to read or write inputoutput (except in the case of some shell diagnostic message - which probably indicates a bug).

Afterward the shells first four positional parameters are set to the strings embedded by eval and written by ctbl() s predecessor.

This first byte is used as a reference to strip from the tail of the string which it matched and the reference in b is eval d to represent a positional parameter so everything from the reference byte to the last byte in string can be substituted away.

The other three strings are dropped from the positional parameters entirely.

The actual return value is one less than the total number of bytes in the first character of its first argument - so any single byte character returns zero and any multi-byte char will return more than zero - and its output format is a little strange.

I had a specific kind of workflow in mind when writing this, and I think maybe a demonstration is in order.

In any case, I havent yet found a getopts that will properly do (strike that - dash s getopts does it char by char, but bash definitely doesnt).

Osx Terminal How To Get Ascii Code For Acharacter