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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10
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4answers
25k views

How to write the output of live-f1 into a file

I opened terminal and ran live-f1 which displays live feed in terminal (text) that changes every second. Only "Enter" key can be used while this program is running (it exits that program). So you ...
3
votes
1answer
38 views

Check for missing files in two directories and their respective subdirectories

Folder alpha has one subfolder, and files in both root and in subfolder. Folder beta has 25 subfolders with files in them. How would I compare the file contents of alpha and beta, checking for ...
1
vote
2answers
64 views

Why does FreeBSD require terminal programs to be started as root?

On FreeBSD all graphical terminal programs (e.g. xterm, rxvt) seem to be installed setuid root, or with setuid root wrappers. On Linux, this is not the case on any distribution I have ever used. Why ...
0
votes
1answer
95 views

What is the string “xxx@xxx:~$” in terminal called? [closed]

I don't know or I just forget what is xxx@xxx:~$ called in a terminal terminal? Is there name for it?
2
votes
1answer
836 views

How to get rid of special characters in the output of make [closed]

When I run gcc, it outputs errors but the function names are surrounded by special characters like this ‘setup_connection’: This same is repeated with variable names. I am wondering if the ...
6
votes
3answers
784 views

Pushdown Terminal Output

Is there a standard way to reverse the output order of a terminal output, ie: ~/Developer $ command0 -bash: comman0: command not found ~/Developer $ command2 -bash: command2: command not found ...
3
votes
1answer
277 views

Waching YouTube videos in bash sessions, in ASCII mode

I already found how to watch YouTube videos in terminal, in ASCII mode, but my goal is to watch them in a bash session, without opening a different window. So, supposing I already have a tmux ...
2
votes
1answer
773 views

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 ...
3
votes
0answers
81 views

How to change background color of a pane in tmux?

I would like to change the background color of the inactive panes in tmux to better distinguish between the active pane and inactive panes. Something just a few shades different than the default. How ...
0
votes
1answer
53 views

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 ...
18
votes
2answers
28k views

List all connected SSH sessions?

I just SSH'd into root, and then SSH'd again into root on the same machine. So I have two windows open both SSH'd into root on my remote machine. From the shell, how can I see a list of these two ...
5
votes
1answer
284 views

combining find with other commands: when to use -exec and when to use pipe? [duplicate]

I've learned to use the find command by itself to find files and directories however when it comes to doing something with the files/folders I'm confused. Given the following command: find . -type f ...
0
votes
1answer
82 views

xfce4 terminal: disable individual shortcut

I would like to disable the Ctrl+Shift+W shortcut which closes the current terminal tab. I am using Vim where Ctrl+R Ctrl+W moves between windows of the vim instance. Sometimes it may happen that the ...
0
votes
0answers
81 views

Can call login command from terminal

I want to create a user using useradd from root in my terminal window, after it I call passwd to set user's password. So I cant call login username because when I call it from terminal it closes ...
20
votes
3answers
10k views

Ctrl-s hang terminal emulator?

I came across a sentence in vimdoc: Note: CTRL-S does not work on all terminals and might block further input, use CTRL-Q to get going again. and this key indeed hangs my vim. I was ...
11
votes
3answers
9k views

What is stored in /dev/pts files and can we open them?

I am curious to know that what is stored in /dev/pts/ files. Can we open these files? According to my knowledge, /dev/pts files are created for ssh or telnet sessions.
1
vote
0answers
54 views

How can you (programatically) detect the ANSI escape code supported by terminal?

I am playing around with shell scripts that use ANSI codes and found that for one reason or another different escape codes are supported depending on your terminal/os.. In some cases I get a dump of ...
3
votes
1answer
88 views

Bind Ctrl+Down in Joe on a Linux console

When I want to select a line in joe editor, I can go to the beginning and simply pres CTRL-Down and this will select the line. I can move somewhere ales and copy the line with CTRL-k-c. The key code ...
2
votes
1answer
108 views

To write this Pseudocode with Regex

I am doing a Makefile which I run regularly by Crontab every day at 0230 crontab -e; 30 2 * * * /bin/thePseudocode Python-like Pseudocode directories = ["Cardiology", "Rheumatology", "Surgery"] ...
3
votes
2answers
47 views

Modular $TERM for different terminal emulators

Is there a way to set different $TERM for different terminal emulators. For example if I am in xterm the $TERM will read xterm-256color, in urxvt urxvt-256color, in sakura xterm-256color and in tmux ...
2
votes
1answer
111 views

How to remove specific lines from a file?

I have a file (ip.txt) that contains ip rules /sbin/iptables -A INPUT -p tcp -s 140.237.4.252 -j DROP /sbin/iptables -A INPUT -p tcp -s 143.227.5.22 -j DROP /sbin/iptables -A INPUT -p udp -s ...
3
votes
1answer
187 views

cannot create special file /dev/pts/0

When using midnight commander in console, I cannot "toggle" the window (using CTRL-o Not an xterm or Linux console; the panels cannot be toggled however, my $TERM is set to linux. After some ...
4
votes
2answers
34 views

Long start time of MC due to bash function

I have next bash function to ensure new-lines after commands: user at terra in ~ $ echo "m" m user at terra in ~ $ echo -n "m" m↵ And the function itself in a .bashrc: function prompt_command { ...
2
votes
1answer
86 views

Why doesn't Ctrl+R do anything in Ubuntu's terminal? [closed]

The keystroke Ctrl+R is important to me because it's the redo command in vim. However, it seems to do nothing at all in Ubuntu's terminal. When I press Ctrl+V and then Ctrl+R, nothing is registered at ...
2
votes
1answer
154 views

tmux: shared session, one user in a pane, another in another pane, two different cursors

I've decided to try tmux: have been reading the docs and googling around, trying to find a way to have two users sharing a session, each with a different cursor. However, giving 777 permissions to ...
8
votes
3answers
11k views

How to mount removable media in /media/<LABEL> automatically when inserted, without any desktop environment?

I have a Debian sid system (Wheezy) (and same for arch), without any desktop environment (and no Xorg at all). I can mount my SD-cards, USB sticks, external HDD by label into a specified directory in ...
1
vote
1answer
47 views

exec -t is invalid

I made an rpm that installs a .run file and whenever I run the rpm and the rpm tries to execute the .run file I keep getting the error that exec -t is an invalid option at the following lines of code ...
23
votes
4answers
1k views

What are the responsibilities of each Pseudo-Terminal (PTY) component (software, master side, slave side)?

I am trying to figure out how a tty works1 (the work-flow and responsibilities of each elements). I have read several interesting articles about it, but there are still some blurry areas. This is ...
17
votes
2answers
988 views

Are the terminal color escape sequences defined anywhere for bash?

I've used every so often colors in Bash scripting (mostly on CentOS), but to make their usage more convinient I end up redefining variables to color values: local GRAY="\[\033[1;30m\]" local ...
0
votes
1answer
230 views

open gnome terminal with serveral tabs and execute a few commands in every tab

This is what I want to accomplish: I want to open a gnome terminal with five tabs in it I want to run a set of commands (5 – 10 commands) in each tab automatically First tab: shall set clear-case ...
1
vote
1answer
43 views

Tmux: how do I bind to C— (control-minus)?

I'd like to bind to control-minus in my .tmux.conf but it doesn't seem to work: bind C-- split-window -v Is this possible?
1
vote
0answers
42 views

How does a terminal emulator work [duplicate]

I never really understood how a terminal emulator (be it e.g. XTerm or the Linux virtual console) works. What transformations happen to the input (key up/down events) to produce the output (usually ...
6
votes
2answers
144 views

Copy a long single-line text from a terminal with undesired change-line

locate ... | less outputs a long path, which is shown as several lines in the terminal, although it is actually a single line. I copy the path from the terminal by selecting the text with mouse and ...
0
votes
0answers
14 views

Terminal output from a program not opened in terminal [duplicate]

Using bash on Ubuntu, I can launch programs from command line and watch what the program is doing 'in the background' while I use the GUI frontend. This is particularly handy when a GUI progress bar ...
1
vote
1answer
22 views

ag output appears different in the terminal vs when piped to a file

When I run the ag command to search text files, I get output that looks like this on the command line (full results not shown): ❯ ag dependency 140317155505.md 27:The Bundler dependencies API ... ...
2
votes
2answers
85 views

Non-printing escape sequence: when?

Recently, I have been playing around a lot with color in the terminal and, therefore, with escape sequences, too. I've read the relevant parts of the Bash manpage along with numerous helpful pages on ...
19
votes
5answers
9k views

Removing control chars (including console codes / colours) from script output

I can use the "script" command to record an interactive session at the command line. However, this includes all control characters and colour codes. I can remove control characters (like backspace) ...
4
votes
1answer
61 views

Printing to an X terminal faster than printing to tty?

In Linux Mint 17, I was testing the printing speed of the default ttys versus the speed of a mate-terminal running on Xorg. To test the speeds, I generated a random file: dd if=/dev/urandom ...
0
votes
0answers
44 views

How to suppress label hover-over path display in MobaXterm (or Xterm generally?) of file being edited

I am using a great free package called MobaXterm [ http://mobaxterm.mobatek.net ] on Windows to access linux systems via SSH. With this I often find it useful to flip between two tabs to visually ...
0
votes
0answers
16 views

Set numer of rows for gnome-terminal or other emulators

I'm aware there exists stty, which allows to set number of rows in a virtual console, such as tty1. However, this does not seem to work with gnome-terminal or xterm. The question therefore is, how ...
1
vote
1answer
72 views

Neither `less` or `less -X` clear screen on exit

Neither less or less -X clear screen on exit. At the same time, vim does.... Env iTerm2, protocol mosh, server Centos + tmux + zsh iTerm2: report term as xterm-256color tmux: set -g ...
0
votes
1answer
76 views

How do I switch from bash to zsh? [duplicate]

I can start zsh with zsh. How can I make it be the default for new terminal windows? Will it be ok to copy my .bashrc to .zshrc to get things like my customized PS1 prompt.
0
votes
0answers
18 views

Is there a version of script that plays nicely with vim?

man script says: Certain interactive commands, such as vi(1), create garbage in the type‐ script file. Script works best with commands that do not manipulate the screen, the results ...
3
votes
4answers
118 views

is there a pastebin service that supports terminal escape sequences?

Is there a pastebin service that supports colors? I understand some of them have syntax hilighting, but I'd like to do arbitrary coloring, preferably using the terminal escape sequences. Example, i'd ...
1
vote
1answer
31 views

Some letters on gnome-terminal can't be typed by specific user

I have a very strange problem on my Ubuntu 14.04 machine. I can't use some letters like r and i in gnome-terminal. Note: when my CapsLock is on I can type R and I in terminal. The problem on my ...
1
vote
1answer
63 views

Send specific signal number with specific key

I want to set a specific key like F12 to send me a specific signal number that out of linux signals range that I can handle this signal with trap command. How can I do that? NOTE: I'm working with ...
2
votes
1answer
1k views

make: *** [all] Error 2

I tried to install a decompiler on my macbook, but the terminal returned errors below. ouekihodos-MacBook-Pro:radare2 LewisWang$ gmake /Applications/Xcode.app/Contents/Developer/usr/bin/make -C ...
0
votes
1answer
49 views

Can I get my iTerm key-combos working in tmux?

I have some shortcut keys defined in iTerm, and I use them for key-mappings in Vim. For example, I map Ctrl-Enter to send a ^[O2P escape code, which I then use to define a Ctrl-Enter key-mapping in ...
3
votes
2answers
87 views

Shell loses keypresses when running SSH in the background

I'm experiencing a bizarre problem with SSH + Bash + Terminal.app: when SSH is run in the background, the shell appears to randomly lose keypresses ~50% of the time. For example, if I run: $ ssh -N ...
2
votes
0answers
73 views

Hex codes for input key combinations

In iTerm2 one can setup keyboard shortcuts so that for a given input sequence, iTerm2 sends a specific hex code to the terminal. What exactly are these hex codes? And how can I identify a hex code ...