1. I've have to write a shell program that accepts Ctrl+T (in linux os in c language) and should print out the current time and date to the screen. I've written the following code but i've to type ^T individual rather than pressing ctrl+T(^T) to get the output. :
2. How do i make the shell program to react when i press ctrl+T without having to press enter. For the following code which i wrote requires me to press enter to execute the command
Output:
[zorro@localhost Desktop]$ gcc hw8.c
[zorro@localhost Desktop]$ ./a.out
My Prompt$: ^T // have to type ^T
Tue Apr 3 14:47:10 2018
My Promts$ : ^T // when i pressed ctrl+T & have to press enter
My Promts$ : ^T
My Promts$ : exit
[zorro@localhost Desktop]$
Now, am in a very tight situation here. I really dont expect anyone to understand but please, try your best.
am trying to right a program that goes back to the previous entry to correct a mistake.
heres what am trying to do. i write a program like this
Name : James Holgston... (1 Reply)
Hellow every body
I am trying to write a very simple script in an executable file as following
if ($?PWD) then
echo "OK"
else
echo "No"
endif
but I am getting error during execution in c shell as
synthax error at line 4 , unexpected end of file
Please advise (2 Replies)
I am programming the following simple shell program. It works for the most part, things like 'ls' and 'ps' work just fine. However when I add options, (example, ls -l) it does not execute the command. Also, I've been trying to add an "exit" command, so that I don't have to use the iterrupt; but... (3 Replies)
How to write a shell script which takes 3 strings as positional parameters,first and second are file names and third is a directory.if the two files exist in `pwd` and they contain a specific pattern and their size is greater than 32 bytes,moves these files into directory? (1 Reply)
in the beginners book i have it gives an exercise to try. saying to make a script that examines the time. it should keep examining every second or so and say some sort of message. Can anyone help me get going.
Thanks (3 Replies)
I want to print the value of variables a1, a2, a3 in for loop in the following program:
a1=this
a2=is
a3=printed
for((i=1;i<4;i++))
do
var=a$i
#w=`echo $var`
e=${var}
echo $e
done
But actually I get a1,a2,a3 as the output not the "this is printed"
So the main question is if I... (3 Replies)
Iam having file 1 as
wc -l file1 is 8
QWEERTYUU|7927836357398398398913 yuyuyu uyiuyuyuyuy yuiyuiyuyuyy
FDHGFSHAJK|1476887897877777777771 iopwiiwpoi e
.
.
.
.
I Need to read the abouve line in file1
so iam using the command as
tail -n 8... (8 Replies)
Hi all,
I am trying to get a file from an ftp server and i have the list of files which needs to be get from the ftp server.
grep unix_prg*.* log.txt > log1.txt
log1.txt (which has the list of files)
06-29-09 00:00AM 3550258 unix_prg090629
06-28-09 07:00PM ... (7 Replies)
Hi all,
I have an assignment from school to write a shell program in linux. the idea is to exercise fork() and execv() functions.. the shell program is supposed to be the master and every command that the user prints will run in a new process. we also need to try running the command in every... (1 Reply)
Discussion started by: r3vive
1 Replies
LEARN ABOUT DEBIAN
pdmenu
PDMENU(1) Commands PDMENU(1)NAME
pdmenu - simple full screen menu program
SYNOPSIS
pdmenu [options] [menufile ...]
DESCRIPTION
pdmenu is a simple menu program that displays a menu from which the user can pick programs to run. Submenus are supported.
When you run pdmenu , you will be presented with a menu. Simply use the arrow keys to move to the program you want to run, and press Enter
to run the program. When the program ends, you will be returned to the menu.
If you are running pdmenu at the linux console, and gpm is running, you can move the mouse and click to navigate through the menus.
Some menu items are actually submenus, and will take you to another menu. Others may cause a text edit window to be displayed, where you
can enter parameters for a command before running it. Still others may run a command, and display the output in a window.
KEYS
Here are all keys you need to get around in pdmenu:
[up arrow], 8, -
Move up one line in the menu.
[down arrow], 2, +
Move down one line.
[page up], [ctrl-u]
Move up an entire screen.
[page down], [space], [ctrl-v]
Move down an entire screen.
[home] Move to the first entry of the menu.
[end] Move to the last entry of the menu.
q Exit the current menu, or exit pdmenu if used on the first menu. Does not work in the text edit windows. (This will not work if
there is also a hotkey set up for 'q', the hotkey takes precedence.)
ESC Close the currently active window, and return to the previous window, or exit pdmenu if used on the first menu.
[ctrl-c]
Exit pdmenu immediately.
[ctrl-r]
Force a redraw of the screen.
[enter]
Launch the selected menu item. In a text edit window, closes the window.
[backspace]
Performs a destructive backspace in a text edit window.
hotkeys
Some letters of a menu item may be highlighted. These are hotkeys; simply press the highlighted letter to select the next menu item
with that hotkey.
OPTIONS -h, --help
Display usage summary and exit.
-c, --color
Use color. By default, pdmenu will display in black and white mode. If your terminal supports color, use this switch.
-u, --unpark
"Unparks" the cursor from the bottom of the screen. When this option is selected, the cursor moves to be on the line of the menu
that is currently selected. This makes pdmenu more useable with speech synthesis systems that need to know what line is the current
line on the screen.
-mmenuid, --menu=menuid
Instead of displaying the first menu from the menufile, select the menu with the id "menuid" and display it.
-q, --quit
By default, at the opening menu, 'q' will exit pdmenu. If the -q switch is specified, this will not be the case. This is useful if
you want to prevent the user from ever exiting pdmenu. (This also disables control-c and the right mouse button from exiting
pdmenu.)
-r, --retro
This makes pdmenu use an old style for displaying menus. Menus in the background don't change color, or lose their hotkeys. Note
that this will also be a little bit faster than the default on slow terminals and the like.
-l, --lowbit
By default, pdmenu will use nice high bit line drawing characters if it thinks your terminal is capable. Sometimes it gets this
wrong and you get borders that look all messed up. Then you should use this --lowbit switch to force it to use low bit line drawing
characters.
-n, --numeric
Disables the use of the keys 2 and 8 for moving up and down. This is useful if you want to use numbered hotkeys.
menufile ...
Specify a menu definition file or files to use. If you specify multiple files, they will all be loaded in together. By default, the
first menu in the first menufile will be displayed when pdmenu starts, but this can be overridden by the --menu= option. If menu-
file is "-", pdmenu will read standard input as a menu file.
NOTES
To use the mouse to cut and paste as usual, hold down on the shift key when you use the mouse.
FILES
/etc/pdmenurc
Default config file. See pdmenurc(5) for details.
~/.pdmenurc
If this exists, it overrides /etc/pdmenurc. See pdmenurc(5) for details.
ENVIRONMENT
COLORTERM
Set this variable to make pdmenu to use color by default.
DISTRIBUTION
Redistribution is subject to the GNU public license.
BUGS
See the file BUGS that came with pdmenu for the current buglist.
AUTHOR
Joey Hess, <joey@kitenet.net>.
SEE ALSO pdmenurc(5)1.3.2 August 23 2011 PDMENU(1)