A terminal is an environment for text input/output. Inside the terminal, one runs command-line and text mode programs (including shells).

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Mosh: Retain backscroll beyond terminal window height [duplicate]

I'm experimenting using Mosh instead of raw SSH for remote shell connections. So far I like it, but I've become used to being able to page-up or scroll through backscroll in my terminal window to see ...
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Unix without a GUI for old machine

I have been given my father's old computer, which currently runs Windows 95 and has a 133-MHz processor, a Pentium(r) according to "My Computer". It seems a shame to recycle it when it works so well ...
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Is there a (light-weight) replacement for `rxvt-unicode`?

I am currently using rxvt-unicode as a terminal emulator. Since I also like the configurability of terminal emulators from GNOME and KDE, I wonder whether there is some kind of replacement for ...
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539 views

Only output most recent 10 (or n) lines of a lengthy command output

I have a command that outputs thousands of lines. I actually need these lines in order to see the progress of the command. But I do not need to see more than the 10 most recent lines. How can I do ...
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Scrolling through ls output without a mouse

In some directories there are quite a few files. When I use ls the output is more than my terminal can handle. Typically I just use one of the following: ls | less ls | more depending on my mood. ...
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Horizontal Scrolling in Terminal

So there are I believe 2 questions on this already. All of them to do with tail -f and hence people give the tangent answer of "use less". I need it for everything, every command, etc. The problem ...
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Fix terminal title after SSH remote logging to another machine

right now I am using an one-line perl code to change titles of my terminal bars, print("\e]0;@ARGV\7"); but every time after I ssh to another remote machine, the title will be modified by the host ...
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2answers
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How to refresh a window by terminal? Or how to simulate `F5`?

I would like a way to refresh a specific window by the terminal. Probably I will need a comand to find the id or the name of the window and a command to refresh it. It looks like xrefresh cannot do ...
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What is the problem with the output of plink?

On my Windows7 machine, I'm traversing to the installed path of PuTTy Application and running: plink <hostname> to connect to my remote Linux host. I see some unrecognized characters in the ...
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1answer
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Control and up/down keys in terminal for use by emacs

Is it possible to use C-up and C-down when running emacs in the terminal window (when starting emacs from the command line with the -nw flag)? What should my terminal send when I press C-up and C-down ...
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4answers
347 views

How to change color of a character while tailing and tr

I regularly use this command line but I would like to change the color of the "|" to green in the output. Does anyone know how I can accomplish this? tail -f file.log | tr '\001' '|' | grep TEST
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The command ` ls -ltu ` fails to list folders/files based on last accessed time

First on your linux desktop create 2 folders. a b Now run this in the terminal ls -ltu the result is drwxr-xr-x 2 root root 4096 Aug 30 20:33 b drwxr-xr-x 2 root root 4096 Aug 30 20:33 a ...
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816 views

What exactly is scrollback and scrollback buffer?

What are "scrollback" and "scrollback buffer" in programs like bash and screen, and how do they relate to the tty, the programs being run, and stdin/ stdout/ stderr? Here is the only definition of ...
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1answer
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How can I list the available color names?

I'm trying to add some color to my git configuration and I want to know what color names are available on the terminal. I only want to use colors by name so it's easier for others to understand I ...
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3answers
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Colorized `cat` for source and script files? [duplicate]

Possible Duplicate: How can I display syntax highlighting on a file? Is there any application like cat, but with color output? I'd like to view my files with colors like in any IDE's ...
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2answers
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bash - why does \x0d\x20 erase the line

This is the view from gedit editor: and the view from vim editor: I then try to grep it, it did grep successfully if i put Log instead of Tog, but the output is corrupted: [xiaobai@xiaobai grep]$ ...
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1answer
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Keyboard shortcut to copy current command from terminal to clipboard [duplicate]

Is there any way to copy current command (line typed in bash prompt) in terminal to X-clipboard without involving a mouse?
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What’s the difference between a “raw” and a “cooked” device driver?

Does this concept only apply to terminal drivers (which is what most sites cover) or to any driver in general?
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3answers
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Shell console clearing

Is there a way to clear up what is displayed on the shell console (in ubuntu linux) in just a single key or two? When I get flood of lines from grep and that exceeds the height of the window, I want ...
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1answer
346 views

Is split-screen `cat`ing possible?

I asked the question How to use cat or less depending on the line count? with the intention of browsing many files without having to scroll up too far to view my history after displaying a long file, ...
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3answers
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How do I run safecopy in terminal?

I'm very new to terminal and Linux so apologies! I have a crashed external hard drive that is spinning but wont appear on the desktop. I ran safecopy from terminal and this is what it said at the end ...
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3answers
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Change $TERMINFO in bashrc script

I'm trying to set TERMINFO="$HOME/.terminfo" within my .bashrc script. The reason being is that my terminal isn't in the system terminfo location, and so I have its terminfo file in my home directory. ...
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2answers
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How to switch X windows from the command-line?

How can I create a script that automatically switches windows? I'm trying to do the same thing Alt+Tab does.
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3answers
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Read and process a string, char by char, yet allow user to simple line edit the input

I want to incrementally read a line of input from the terminal, and allow the user some basic line editing functionality; INS, DEL, RIGHT, LEFT HOME, END, BACKSPACE Each time the string is ...
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3answers
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Overriding the shade of color displayed

I have to work on systems which display some colors that are hard to read. I ssh into these systems, but don't have management permission to change the colors they display. Is there any way I can ...
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2answers
115 views

Where does the TERM environment variable default get set?

When I open a terminal window with the GNOME Terminal emulator in the desktop GUI the shell TERM environment variable defaults to the value xterm. If I use CTL+ALT+F1 to switch to a console TTY ...
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143 views

How do I come by this pty and what can I do with it?

It seems that a simple shell redirect from /dev/ptmx gets me a new pseudo-terminal. $ ls /dev/pts; ls /dev/pts </dev/ptmx 0 1 2 ptmx 0 1 2 3 ptmx It disappears as soon as the process that ...
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4answers
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Keeping a process running on server even SSH is closed [duplicate]

I am running long program on server, which is basically Jar file of java program. I want to keep this program running even if SSH terminal is closed, how I can keep this program running on server?
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2answers
489 views

Ruby update not working using two methods

I tried to install ruby version 1.9.3 with this on my mac 10.6.8: $ \curl -L https://get.rvm.io | bash -s stable --ruby Oskar-Niburskis-MacBook-Pro:~ oskarniburski$ rvm install ruby-1.9.3-p362 ...
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1answer
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Confused about Debian error message from su

On Raspbian, the Debian distro aimed at RPi, I end up getting the following error: $ sudo su -l root -c /bin/bash bash: cannot set terminal process group (-1): Inappropriate ioctl for device bash: no ...
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4answers
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Set tab width in GUI terminal

I found that setterm -regtabs 4 doesn't work in xterm or urxvt. But, this xterm_set_tabs () { TERM=linux; export $TERM; setterm -regtabs 4 } will circumvent the problem. But, I suspect ...
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Change working directory of 2 terminals at once

I've typically have gnome-terminal open with ~8 tabs, using 2 consecutive tabs for the same task (one has emacs, the other is used to do git checkins and unittest runs and so). When changing tasks, I ...
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closing unused gnome terminals

while working I start lots of gnome-terminals and do something with them. dd on first terminal, 12 ssh sessions to a bunch of servers to do something. These sessions are finishing it's job and get ...
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2answers
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Installing Steam on Debian Wheezy

I downloaded the .deb file from the Steam website, but couldn't install it as it complained about having and "outdated" version of libc6. I look around and apparently I have to add jessie sources to ...
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2answers
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In OS X Darwin, why can I interfere with text input across user sessions using cat?

OS X Darwin: Disrupting Terminal Sessions Across User Identities How, in Brief: with cat < /dev/ttys_, in Terminal. My Question This OS X 10.9.2 Darwin behaviour seems odd to me, and I would ...
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2answers
317 views

Command-line editing vim style [duplicate]

I recently discovered terminal's feature, you can set the keys emacs or vi style I prefer the second. so if you do set -o vi You can use k j l h keys to navigate on the command line. And you can ...
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1answer
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How can I pipe commands to any terminal?

I often use more than one terminal (or terminal emulator) at a time; and while in X I can copy-paste commands, besides not being very practical, it obviously does not work on the real TTY. The first ...
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4answers
588 views

Incrementing a variable each time the system boots up

The idea is to initialize a variable and set it to 0. Then create a script that executes on boot and increments that variable by 1 each time the system boots up again. Sounds simple enough right?
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1answer
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How can a bash script detect support for window titling escape characters?

I have a debug trap that runs every time I enter a command in bash that sets the window title to indicate what command is running. I'm leaving out all the configuration details and boil it down to: ...
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0answers
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Is it possible to modify the colors in bash? [duplicate]

Possible Duplicate: Is it possible to configure Bash so that STDERR can be a different color than STDOUT? In bash, the only color I know how to modify is the prompt, using \[ and \]. From ...
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5answers
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Perl script, do cd on terminal

In Script to change current directory (cd, pwd) it is shown how to run a bash script that changes terminal directory. But how do i run a perl script that runs a bash script that changes terminal ...
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4answers
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Open file found with 'find' command

This is probably an easy one, but I can't figure it out and it's pretty much not searchable. In a folder hierarchy I have exactly one file of type xyz. I want to find that file and open it with a ...
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0answers
318 views

How can I check which shell I am currently using? [duplicate]

Possible Duplicate: How to test what shell I am using in a terminal? An echo $SHELL will only display the value of the SHELL variable which would indicate the default shell on the system. ...
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2answers
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How are long command lines ( > $COLUMNS ) automatically wrapped to a new line?

There are several points where I/O is passed through, some of which (to my knowledge) are the shell, pty, tty, termios, terminal emulator application. In most terminal emulators, long command lines ...
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0answers
126 views

Problem in writing message from one terminal to another terminal

I have a user of name x in tty1 and y in tty2. x wants to write some message to y and vice-versa. When I typed write y tty2 in the tty1 terminal, it said: write:you have write permission turned off ...
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1answer
295 views

Using ncurses for basic GUI on a process started inside an init script

I have a custom written application that runs on a embedded setup (buildroot). My application has to run every time the target device boots up and so I wrote an init script to do this and it works ...
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2answers
738 views

Invoke a command/script disconnected from the controlling terminal?

I'm investigating the behaviour of a script that is normally run as an automated process (e.g. cron, Jenkins). The script can (eventually) invoke commands that behave differently (seeking user input) ...
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2answers
541 views

Computer terminal and virtual console [duplicate]

Possible Duplicate: What is the exact difference between a 'terminal', a 'shell', a 'tty' and a 'console'? I was wondering what relations and differences ...
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1answer
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ANSI escapes in Pash prompt are displayed as garbage in Gnome terminal

I would like to use Pash, a PowerShell implementation for mono on my CentOS box. After compilation I started it and got $ mono Source/PashConsole/bin/Debug/Pash.exe ...
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1answer
140 views

Host name on terminal changes when I connect internet : why?

[acme@localhost ~]$ su Password: [root@localhost acme]# Now I connect internet and I get the following: [root@localhost acme]# exit exit [root@localhost acme]# su [root@dhcppc9 acme]# Edit ...