11-05-2008
if $varib contains non-numeric charctr then...
I've asked a similiar question to this, but this time it is different, a little more restrictive....I have a variable, $varib, that should always only contain numeric characters. I need a way to echo something if the variable contains a letter, space, or some other punctuation character, ,.!>?" etc.
Previously I used: grep '[a-zA-Z]' and that can work for letters, but what about the other characters?
#!/usr/bin/bash
#my checkbk
#input
echo "input number"
read varib
#if $varib contains a letter, space, comma, period, or other character
#echo something
#exit 1
#else
#echo good number, thanks.
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LEARN ABOUT OPENSOLARIS
echo
echo(3XCURSES) X/Open Curses Library Functions echo(3XCURSES)
NAME
echo, noecho - enable/disable terminal echo
SYNOPSIS
cc [ flag... ] file... -I /usr/xpg4/include -L /usr/xpg4/lib
-R /usr/xpg4/lib -lcurses [ library... ]
c89 [ flag... ] file... -lcurses [ library... ]
#include <curses.h>
int echo(void);
int noecho(void);
DESCRIPTION
The echo() function enables Echo mode for the current screen. The noecho() function disables Echo mode for the current screen. Initially,
curses software echo mode is enabled and hardware echo mode of the tty driver is disabled. The echo() and noecho() functions control soft-
ware echo only. Hardware echo must remain disabled for the duration of the application, else the behavior is undefined.
RETURN VALUES
Upon successful completion, these functions return OK. Otherwise, they return ERR.
ERRORS
No errors are defined.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
|MT-Level |Unsafe |
+-----------------------------+-----------------------------+
SEE ALSO
getch(3XCURSES), getstr(3XCURSES), initscr(3XCURSES), libcurses(3XCURSES), scanw(3XCURSES), attributes(5), standards(5)
SunOS 5.11 5 Jun 2002 echo(3XCURSES)