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10
votes
1answer
4k views

SSH causes while loop to stop

I have finally managed to boil down a problem I have been struggling with for a few weeks. I use SSH with "authorized keys" to run commands remotely. All is fine except when I do it in a while loop. ...
1
vote
0answers
27 views

How to get the mouse/keyboard raw events?

I want to intercept the raw events from the keyboard (or the mouse, eventually). I tried to use the /dev/input/[...] files, they are very practical and I can read the events of any key even caps lock ...
3
votes
2answers
49 views

When does cat finish reading from a pipe?

Given the following code, why does cat only print the contents of the pipe after I've typed \n or CTRL+D? What are the conditions for cat to actually print what it read? #include <stdio.h> ...
3
votes
1answer
744 views

how to merge two audio input source using avconv

I try to make screencast using avconv and I facing a problem. I finally succeed to record both pc output and microphone input , the problem is that they're not merged in the output file. (I saw ...
0
votes
1answer
528 views

psmouse sync issues!

I have Compaq CQ61-420US (64-bit AMD) laptop with Synaptics touchpad checked using $ egrep -i 'synap' /proc/bus/input/devices N: Name="SynPS/2 Synaptics TouchPad" But recently after Arch Linux ...
1
vote
0answers
55 views

USB bar code scanner not working on Raspbian

My USB bar code scanner (SYMBOL LS2208) is recognized as a HID. hid-generic 0003:05E0:0600.000F: hiddev0,hidraw0: USB HID v1.10 Device [\xffffffef\xffffffbe\xffffffa9\xffffffbe\xffffffa9Symbol ...
1
vote
1answer
178 views

How to read characters from a serial keyboard on /dev/inputs/eventX (Speed?)

I'm trying to read from a second keyboard whose inputs can be read from /dev/inputs/eventX, but I get rubbish and not the character expected. I'm accessing my target by using Putty. I can connect to ...
5
votes
0answers
1k views

Mouse scroll wheel speed far too sensitive

In my crunchbang installation with X11, openbox, my wireless usb mouse is listed at both /dev/psaux and /dev/input/mouse0. It's working fine apart from the scroll wheel, which although active, is far ...
3
votes
1answer
527 views

USB keypad (HID) not responding in linux but in grub

An external USB keypad I'd like to use gets recognised as a USB HID device, but it is not functional when Linux is booted. It does work when plugged into a Windows desktop and it does work while in ...
-1
votes
1answer
54 views

Accessing array elements within process substitution bash

I've got a text file which looks like this: b4238ca2-cb8d-11e4-8731-1681e6b88ec1,https,username,password,ipaddress b4238f0e-cb8d-11e4-8731-1681e6b88ec1,https,username,password,ipaddress ...
1
vote
0answers
45 views

How many bytes can a keypress return? And should a metafied key return more?

I've been tooling around w/ this input reader lately. Currently it only prints a report to stdout for each key pressed while it runs, but I would like to graduate it to a higher purpose sooner than ...
2
votes
4answers
64 views

input file stream to command

How is it possible to send a file stream to this command instead of a file? /usr/local/bin/wkhtmltopdf --title "$SUBJECT" -q $SOURCEFILE $OUTPUTFILE The file stream is from a string in PHP.
5
votes
2answers
2k views

Capturing key input from events device and mapping it (toggle TouchPad key is unmapped)

I have a Lenovo IdeaPad Yoga 13 with Ubuntu 13.10 Installed. The device has a "Toggle TouchPad" button on the keyboard (F5). The keyboard's F* buttons are reversed (so to get F5, I need to press Fn + ...
1
vote
0answers
46 views

Mapping two joysticks with Xorg

I already managed to map the input of a joystick to keyboard inputs by writing a file in my xorg.conf.d/ directory (the file is named 51-joystick.conf). Now I would like to map the inputs of a second ...
1
vote
1answer
104 views

Remap input keys in /dev/input level

I want to remap input keys from keyboard and mouse, but I need it to be in low level, so that reading /dev/input* shows remapped functions. Example: I have regular keyboard and I want ENTER key to ...
-2
votes
1answer
35 views

Using 'grep' to search for a specific pattern [duplicate]

I'm playing with the Linux terminal and I have to do a exercise which states that I have to find inside a file for any line that contains at least an a, b and c, it doesn't matter it the lane has 2 a, ...
0
votes
0answers
23 views

printf>stdin unusable with read [duplicate]

With read, sending "a" to stdin is not equivalent to pressing "a" (or use your favorite letter/key). Tested this: ~$ read -n1 & fg [1] 11620 read Then "typed" "a" into the read process stdin ...
0
votes
0answers
32 views

Input event for trackpad co-ordinates

I am making an app that requires the co-ordinates of the touch / swipe of the user. This is currently available only if you are running a VM ( Alt + F2/3/4/5...) using evtest. What do you think is ...
9
votes
5answers
6k views

Why does “cat ttyUSB0” not produce output?

I connected an infrared receiver to a USB port ... (the last line of dmesg tells device file) $ dmesg [10496.596063] usb 7-2: new full-speed USB device number 2 using uhci_hcd [10496.751112] usb 7-2: ...
1
vote
0answers
30 views

How to capture a keyboard shortcut

I need a script, that will run in terminal (under X11), and wait for a keyboard shortcut (happening anywhere in the desktop environment), once that shortcut (or key press sequence) happens, it will ...
0
votes
1answer
159 views

How to make a Wacom tablet stylus slower (less sensitive)

The pointer moves too fast (demonstration video) when I use the tablet in relative mode after I run xsetwacom set "Wacom Bamboo stylus" Mode Relative However, xsetwacom --list parameters does not ...
0
votes
0answers
16 views

Compose plus apostrophe doesn't work with Cyrillic

I used to have a custom .XCompose, I removed it to possibly eliminate the cause. Unfortunately, the problem persists - I can't create an accented Cyrillic character, such as the ones here [1]. Simply ...
1
vote
1answer
26 views

Why is 2 of every 10 keystrokes in X11 missing? [closed]

When I enter 1234567890 two numbers in sequence are missing. E.g. 12567890 (missing 34). What causes this?
1
vote
3answers
203 views

How to send input in a new terminal using Shell Script

I found out how to automatically send input to a C program using Shell Script. For example, if I compile this C program: //test.c int main() } int x; printf("Please enter an integer:"); ...
1
vote
1answer
45 views

How to write short alpha using the compose key

I'd like to enter a short alpha using the compose key: ᾰ. I tried using compose+U+α but this doesn't work. Neither does using b instead of U. How can I enter the short alpha using the compose key?
3
votes
1answer
99 views

Problem with getting interactive input in while read loop

I was doing something like the following minimal example: #! /bin/sh # $1 = file containing list of files to sync # $2 = source dir ; $3 = target dir cat "$1" | while read f do cp -i "$2"/"$f" ...
0
votes
0answers
24 views

Programatically capturing application inputs and outputs

I've been given a mess of applications that all touch various common files and data sources. (Retail IT environment so lots of generic sources of data that gets sliced and diced into various ways and ...
2
votes
2answers
150 views

Grabbing keyboard control in shell script

I have a certain shell (zsh) script which reads one character at a time and performs an action afterwards. In the shell, this is realized by "read -k" in a loop. I want to execute the script as a ...
1
vote
1answer
64 views

Opensuse 13.1 Gnome Desktop Region&Language won"t open after installing ibus

i want to be able to write Kanji on my Opensuse system, so i followed this tutorial: http://www.localizingjapan.com/blog/2013/11/20/japanese-input-on-opensuse-linux-13-1-kde/ It does not work, ...
0
votes
0answers
103 views

Synaptics touchpad LED support

How to enabled support the LED in Synaptics touchpads? I'm use Debian Jessie and xserver-xorg-input-synaptics ver. 1.8.1-1. I'm find patches by Takashi Iwai from SUSE for supporting the LED in ...
2
votes
2answers
110 views

Is there a way to execute commands while getting user input?

I’m fairly new to scripting and I have a high-level question of how to do something. I want to design a simple game similar to space invaders, with these two main features for now: Bullets drop ...
2
votes
1answer
2k views

Why the behavior of while loop and for loop is different?

I am trying to read user and server details from file tempo.txt and then check the disk space usage of the file system on that unix account using another script server_disk_space.sh.But I am not able ...
0
votes
1answer
109 views

Using ARGV to get user input in Awk script [closed]

I know ARGV[i] can be used for storing user input. However, I want to use it in awk script and get the ARGV[i] to compare the field from another text file. If the ARGV[i] matches the field or the ...
0
votes
2answers
151 views

Bash Script using read needs to stop executing on Ctrl+D

I need to write a script that will add a line to a text file if Enter is pressed. But, if Ctrl+D is pressed, I need to exit that loop in the bash. touch texttest.txt LINE="0" while true; do read ...
3
votes
0answers
93 views

Ignore brief mouse click/releases

The switch contacts in my mouse are going, and rather than open it up yet again and clean them or try to hunt down a replacement switch (or buy a new mouse) I would like to solve this problem via ...
19
votes
8answers
7k views

Disable Keyboard & Mouse input on unix (under X)

How can one programmatically "freeze" the Keyboard & Mouse temporarily, so that no one could mess with the system? There are several possibilities where this is useful. For instance, I have a ...
1
vote
1answer
74 views

Prevent the mouse to wake up display

I set my displays to sleep with xset dpms force off after locking the screen with kscreenlock. This is great, the displays wake up when the mouse is moved (by me, air, the cat). I'd like to set it in ...
2
votes
1answer
123 views

Command-line editing and wrapping

When entering long queries into the command-line psql, my terminal[1] is not wrapping the input line correctly. Additional charactes wrap back to the left of the screen, but on the same line as the ...
1
vote
2answers
441 views

Pass a command to ROOT from a shell script and having it stay open

I am writing a bash script to perform some analysis using the program ROOT. I want to run some initial command to load the result of the analysis, then continue using ROOT interactively. The analysis ...
2
votes
2answers
225 views

How to clear the input in Bash

I have a bash script that is reading quite a bit of data /dev/random. I need the user to type randomly to seed the random daemon. However once the script completes everything typed will get dumped to ...
1
vote
0answers
221 views

How to use a PS gamepad with OpenWRT?

I'm fairly new to OpenWRT and Linux in general so please bare with me. I'm trying to print the button presses from a playstation gamepad to the console on an Arduino Yun which has OpenWRT. I've used ...
2
votes
1answer
195 views

Virtual mouse is ignored by xorg when loaded

I'm trying to run virtual mouse driver from book "Essential Linux Device Drivers" but when I'm load this module into kernel using insmod in /var/log/Xorg.0.log I see: [ 757.212] (II) config/udev: ...
12
votes
2answers
2k views

Record every keystroke and store in a file

I need to record every keystroke and store in a file in the user directory ~, when using my account, I am not sudoer and I cannot install programs (like logKeys) in any way. How could I do so using ...
2
votes
1answer
245 views

Program only sees 1 input device

I have a program (advancemame) running on Raspian (Raspberry Pi) which like most programs gets its input from the keyboard. I'm using a program which implements uinput to convert GPIO pins HI/LOW ...
3
votes
1answer
166 views

Connect a keyboard / IR controller to a command line program running in a screen

I'm trying to have my Raspberry Pi function as a GUIless music player. I've got Arch Linux installed, and use it through ssh. I've got also an IR receiver dongle, and I'm planning to use it to control ...
13
votes
4answers
18k views

How to inject keystrokes via a shell script?

I'm trying to inject keystrokes into the input daemon so as to simulate typing from a Bash script. Is this possible, and if so, how can I make it happen?
1
vote
1answer
330 views

Loading input from a file in lex

First of all, I was not sure whether to post this question here or on stackoverflow, but here's my question anyway. Besides using input redirection, i.e. ./code < inputFile.dat, is there any way I ...
5
votes
4answers
6k views

How to send keystrokes (F5) from terminal to a process?

I'm using an Raspberry Pi in combination with Chromium (kiosk mode) to show up some stats. The Pi doesn't have an connected keyboard so I searched for a solution to send keystrokes from the terminal ...
4
votes
0answers
225 views

How to get a Finepoint Digitizer Tablet to work under Fedora Core 16?

How to get a Finepoint Digitizer Tablet to work under Fedora Core 16? The hardware in question is a Gateway m285-E. It uses an active pen (has a battery in the pen). cat /dev/ttyS0 returns ...
1
vote
0answers
178 views

Tmux hidden input at command line

I've just started using tmux recently, and have run into this problem a few times. Whatever I type on the command line, is hidden from view until I press enter and it is executed. I don't know how I ...