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 to come up with a way you can use the read function to read one character (without pressing enter or return) and then perform a command based on what character you entered.
The only solution I can find is read -n but this isn't available for me.
I've used the following code to perform a timed out read which will wait 1 second and then continue the code but it takes too long.
Code:
timedout_read() {
timeout=$1
varname=$2
old_tty_settings=`stty -g`
stty -icanon min 0 time ${timeout}0
eval read $varname
stty "$old_tty_settings"
}
timedout_read 1 TEST
Does anyone have any idea how to read single character without having to press enter?
im having trouble doing this:
i have a variable with 2 characters repeating e.g. aababbbaaaababaabbaabbba
is there a way i can search the variable for a's and b's and then change a's to b's and b's to a's?
im guessing its like getting the 1's compliment of the string
im doing this in... (2 Replies)
Can someone help me to write a script / command to read in a file, character by character, replace any unknown ASCII characters with space. then write out the file to a new filename/
Thanks! (1 Reply)
Hi,
I've made a script to grep a file
for i in `cat filename.txt`
do
strings ./binfile | grep "$i" 2>&1 > /dev/null
done
this works fine as long as in filename.txt i don't have any entries with spaces. But in my case i want to grep something with spaces like "lala tata"
and... (3 Replies)
hello all
i request you to give the solution for the following problem..
I want read the text file.and print the contents character by character..like if the text file contains google means..i want to print
g
go
goo
goog
googl
google
like this Using unix Shell scripting...
without using... (1 Reply)
Hi all,
Greetings,
I have the following scenario, The contents of main file are like :
Unix|||||forum|||||||||||||||is||||||the||best
so||||||be|||||on||||||||||||||||||||||||||||||||||||||||||||it
And i need the output in the following form:
Unix=forum=is=the=best
so=be=on=it
... (3 Replies)
I have a bash loop that waits for a single key press, then does $something depending on what $key is pressed before refreshing the screen with updated data. The problem I have is that the script will store additional key presses and chain them together causing the screen to redraw and the script... (1 Reply)
Hi friend,
I have one file , and i want to read that file character by character.
I need this script in ksh.
while using read option with -n1 am getting error.
while read -n1 c read has bad option
And if i am using below script, then if in a line has space like this ( Pallvi mahajan)... (10 Replies)
Hello everybody,
I am using Windows 10 and cygwin/bash.
I need to write a script in bash which simulates opening of a program and then press some keys such as F5, ENTER and ALT+F4.
I have written a VBScript which does the job
Set WshShell = WScript.CreateObject("WScript.Shell")... (9 Replies)
I have a csv dataset like this :
C,rs18768
G,rs13785
GA,rs1065
G,rs1801279
T,rs9274407
A,rs730012
I'm thinking of use like awk, sed to covert the dataset to this format: (if it's two character, then keep the same)
CC,rs18768
GG,rs13785
GA,rs1065
GG,rs1801279
TT,rs9274407... (7 Replies)
Discussion started by: nengcheng
7 Replies
LEARN ABOUT OPENSOLARIS
nocbreak
cbreak(3XCURSES) X/Open Curses Library Functions cbreak(3XCURSES)NAME
cbreak, nocbreak, noraw, raw - set input mode controls
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 cbreak(void);
int nocbreak(void);
int noraw(void);
int raw(void);
DESCRIPTION
The cbreak() function enables the character input mode. This overrides any previous call to the raw() function and turns the stty flag
ICANON off.
The nocbreak() function sets the line canonical mode and turns the stty flag ICANON on without touching the ISIG or IXON flags.
The noraw() function sets the line canonical mode and turns the stty flags ICANON, ISIG, and IXON all on.
The raw() function sets the character input mode and turns the stty flags ICANON, ISIG, and IXON all off. This mode provides maximum con-
trol over input.
It is important to remember that the terminal may or may not be in character mode operation initially. Most interactive programs require
cbreak() to be enabled.
RETURN VALUES
On success, these functions return OK. Otherwise, they return ERR.
ERRORS
None.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
|MT-Level |Unsafe |
+-----------------------------+-----------------------------+
SEE ALSO getch(3XCURSES), halfdelay(3XCURSES), nodelay(3XCURSES), timeout(3XCURSES), libcurses(3XCURSES), attributes(5), standards(5), termio(7I)SunOS 5.11 5 Jun 2002 cbreak(3XCURSES)
07-14-2010
)