A ASCII character is represented by a single byte. A unicode character is represented by more than one byte. It all depends what you need this information for. Is it possible that you will have international characters in your file?
Maybe an example using the unicode character ä makes it more clear to you:
I would really like to have a script that will accept the key press from the user with out having to press the enter key afterwards.
i.e.
echo "Press Y to print \c"
read YesNo
At this point the user has to press the enter key to continue. Is there a way to accept the key press from the... (3 Replies)
Hello,
I have a file where I am supposed to convert all the single i characters to uppercase, but when I try, it converts all the i's inside of words to uppercase as well.
I tried doing:
cat filename | sed 's/i/I/g'
but that obviously does not work.
Any help would be greatly... (6 Replies)
Hi all,
I have what I would have thought was a very simple problem but I can' find an elegant solution.
I have a file which has a single value you in it, say 194. All I want my perl script to do is open the file, read the value and assign that value to a variable.
I've done stuff like... (1 Reply)
Hello,
I need to replace the comma to something else between the single quote:
1aaa,bbb,'cc,cc','ddd',1
2aaa,bbb,'ccc','d,d',0
to
1aaa,bbb,'cc<comma>cc','ddd',1
2aaa,bbb,'ccc','d<comma>d',0
Can someone help? Thanks. (2 Replies)
Hi,
I'm sorry if this has already been posted somewhere but I can't seem to find it on the forums (or anywhere on google :( )
I am writing a script where a user must enter a single character to perform an action.
For example, Press Q to Quit or R to Refresh
Basically I am stuggling... (5 Replies)
This reads single keystrokes and produces an output:
#! /bin/bash
while : ; do
read -s -n 1 >/dev/null 2>&1
echo ${REPLY}
done | awk '{print}'
This second one don't. Even though these examples make no sense; the real code is more complicated. Who knows what the problem is... (2 Replies)
Hi Guys,
Happy New Year to you all!
I have a requirement to read an embedded new-line using KSH's read builtin.
Here is what I am trying to do:
run_sql "select guestid, address, email from guest" | while read id addr email
do
## Biz logic goes here
done
I can take care of any... (6 Replies)
How to remove characters enclosed in single quotes?
My data is something like this
(03/22/2011 08:17:26.650) : ( -> '1' -> '1-1-3' -> '6' -> '1' -> 'SALMOR58BB4' aaaaa bbbbbb ccccc ((dddd))
I want the output to be
(03/22/2011 08:17:26.650) : ( -> -> -> -> -> aaaaa... (2 Replies)
Hi,
I have file in which fields are pipe (|) separated and the record separator is new line (\n). But sometime I am getting a field value which is spread across multiple line. Basically I am getting a file from another system in the below format and needs to process the file and load data into a... (3 Replies)
Hi all.
I’ve 2 inputs here and would like to produce it in single ouput. I’ve drafted simple shell script but not sure how to put all this together. The final output should be “GROUP-XYZ” instead of “TEST”
Please advise.
INPUT1
GROUP-XYZ
INPUT2
type8code0@box:~/dbedit$ cat... (8 Replies)
Discussion started by: type8code0
8 Replies
LEARN ABOUT PLAN9
ascii
ASCII(1) General Commands Manual ASCII(1)NAME
ascii, unicode - interpret ASCII, Unicode characters
SYNOPSIS
ascii [ -8 ] [ -oxdbn ] [ -nct ] [ text ]
unicode [ -nt ] hexmin-hexmax
unicode [ -t ] hex [ ... ]
unicode [ -n ] characters
look hex /lib/unicode
DESCRIPTION
Ascii prints the ASCII values corresponding to characters and vice versa; under the -8 option, the ISO Latin-1 extensions (codes 0200-0377)
are included. The values are interpreted in a settable numeric base; -o specifies octal, -d decimal, -x hexadecimal (the default), and -bn
base n.
With no arguments, ascii prints a table of the character set in the specified base. Characters of text are converted to their ASCII val-
ues, one per line. If, however, the first text argument is a valid number in the specified base, conversion goes the opposite way. Control
characters are printed as two- or three-character mnemonics. Other options are:
-n Force numeric output.
-c Force character output.
-t Convert from numbers to running text; do not interpret control characters or insert newlines.
Unicode is similar; it converts between UTF and character values from the Unicode Standard (see utf(6)). If given a range of hexadecimal
numbers, unicode prints a table of the specified Unicode characters -- their values and UTF representations. Otherwise it translates from
UTF to numeric value or vice versa, depending on the appearance of the supplied text; the -n option forces numeric output to avoid ambigu-
ity with numeric characters. If converting to UTF , the characters are printed one per line unless the -t flag is set, in which case the
output is a single string containing only the specified characters. Unlike ascii, unicode treats no characters specially.
The output of ascii and unicode may be unhelpful if the characters printed are not available in the current font.
The file /lib/unicode contains a table of characters and descriptions, sorted in hexadecimal order, suitable for look(1) on the lower case
hex values of characters.
EXAMPLES
ascii -d
Print the ASCII table base 10.
unicode p
Print the hex value of `p'.
unicode 2200-22f1
Print a table of miscellaneous mathematical symbols.
look 039 /lib/unicode
See the start of the Greek alphabet's encoding in the Unicode Standard.
FILES
/lib/unicode
table of characters and descriptions.
SOURCE
/sys/src/cmd/ascii.c
/sys/src/cmd/unicode.c
SEE ALSO look(1)tcs(1), utf(6), font(6),
ASCII(1)