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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11
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1answer
687 views

Clear old prompt lines in bash to save scroll space

My terminal theme used to be like this, But I thought the prompt wasted so much space. And later I got an idea that I could clean the prompt every time I ran a command. I was using bash, one of ...
1
vote
1answer
674 views

Repeating a text-output terminal command, in a scrollable ncurses-like interface?

man ps says: If you want a repetitive update of the selection and the displayed information, use top(1) instead. ... however, in some cases, I don't like the output of top - I would instead like ...
3
votes
1answer
3k views

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 ...
2
votes
1answer
1k views

Cat and Less give different output

I executed the following command # top > /home/user/top_output.txt Nothing Happened for a while and then i pressed Ctrl+C. When i checked the file that was created, it had the contents in it. So ...
9
votes
3answers
5k views

Why 'echo $0' gives different result for two different terminals?

I opened a terminal on Ubuntu using Ctrl+Alt+T and a different terminal by going to a directory and then right clicking and choosing "Open in Terminal". I did an echo $0 in both cases. In the ...
1
vote
2answers
92 views

Why the duplications in the command line output

Entering the following command prints duplicates as shown below. Not all lines print twice but some do. What gives? XXXX:~ XXXX$ man -k pid pid(ntcl) - Retrieve process identifiers ...
4
votes
1answer
179 views

What's the problem with terminals vs colors?

I'm a long time linux/unix user, as almost anyone working with this kind of OSs I use the terminal or a terminal emulator a lot, but I never understood why it's so hard for any GNU/Linux distribution ...
2
votes
4answers
1k 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?
0
votes
1answer
448 views

Bash script for copying text currently entered to prompt

I'm trying to minimize using of mouse. Copying text in terminal is the mostly inconvenient activity for mouse avoiding. Now, tmux helping me to obtain this purpose. However, I regularly needs to copy ...
1
vote
1answer
428 views

set tab color in a tabbed terminal emulator

I would like to set in my terminal emulator (i.e. gnome-terminal) the color of the tabs like in the osx's terminal emulator. Is there this feature in any of the linux terminal emulator plethora? EDIT:...
4
votes
2answers
554 views

Is there a way to lock terminal's title?

Sometimes there're lots of different sessions opened in own terminal's tabs and it's rather desirable to have theirs initial titles (named by session name) locked since local title tweaks make those ...
0
votes
2answers
101 views

Command to restore filesystem to state after installation of the OS

How can I wipe all the changes to the filesystem since installing the OS? It's not that I want to destroy the files because they contain sensitive data or anything like that; I just want to start over ...
8
votes
1answer
893 views

Why do we need so many terminal emulator packages and what is their use?

This is something that has been so confusing to me for a long time. I am using Linux but I have gaps in my understanding of certain aspects and one is about the terminal. As I came to understand it ...
0
votes
1answer
229 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 [...
0
votes
1answer
33 views

How exactly is a Linux desktop/device/display expressed in a terminal?

My plan is to use vpxenc (video encoder) and flac (audio encoder) to record the screen/microphone, but I'm stopped short of entering the input (file) in the command line. How can I exactly address a ...
3
votes
4answers
8k views

Pipe all input and output of terminal to file [duplicate]

I do not know if this is even possible or not, but in an attempt to keep track of many changes I am about to make to my system I want to track all input I type and all output from a terminal I'm ...
2
votes
2answers
379 views

Show a sliding window of output from a program

I want to run a command (rsync -av) and only display 10 lines of output at any time. I have found a similar post, but I don't want to redirect it to a file. I want the output to be displayed ...
4
votes
3answers
2k views

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 ...
10
votes
1answer
374 views

Include colouring in GNU ls time-style

I know, I can specify custom time format for ls like this ls -lAF --time-style="+ %Y-%b-%d %H:%M:%S" --color=always but I would like to "smuggle in" colors inside the time format. For example, I ...
1
vote
1answer
352 views

Mac 10.9.1 // Gerris installation //

I am trying to install Gerris . The website is : http://gfs.sourceforge.net/wiki/index.php/Mac_OSX_Installation I followed the instructions. But I could not install Gerris Dependencies. I installed ...
17
votes
2answers
2k views

Is it harmful to close a terminal window without properly exiting an application?

Using Ubuntu 12.04 LTS, my question is that if I started an application in a terminal window, then is there anything bad about just closing the terminal window without exiting the application properly ...
4
votes
0answers
254 views

Slow terminal print out

Just installed (netinstall) debian wheezy on a second machine newer machine however the terminal print out is noticeable slower than on the old machine although the new have faster CPU, RAM and HDD (...
3
votes
0answers
893 views

How to change colors of all running urxvt instances?

I'm used to black background and light green text when working on my urxvt terminals. But sometimes, when I take my laptop outside, it becomes hard to read and I'd like to change the colors of all my ...
0
votes
0answers
30 views

remotely connecting to Unix from Mac to use Gerris simulation

I am trying to run a simple file on Gerris software (is like gnu) on a remote Unix machine. I moved the simulation file written in nano into remote machine say dps11. samires-mbp:~ samirebalta$ nano ....
1
vote
1answer
315 views

How to open a directory and save code in it Gerris in Linux?

I am new to this Unix and Gerris (software) world. I have to simulate. but I cannot open and type these codes below in vortivcity directory.I am using remote connection from mac to university machine. ...
3
votes
1answer
442 views

Using a variable inside a sequence of commands in bash to supplement an existing string - syntax error or flawed design?

I'm using the following sequence of commands in my .bashrc file to alter the appearance of my linux terminal. It fills the screen line by line with a pattern made out of characters. There is no ...
2
votes
2answers
1k views

Keeping xterm terminal alive on crunchbang linux debian wheezy

I like to keep a number of terminals open at different locations on my development VM. For this I use terminator because I got a big screen and I can divide the terminals anyway I want. But after ...
1
vote
1answer
1k views

How do I find out the keycodes for Ctrl+up and down arrow for TERM=screen?

I am using tmux a lot, and I have already managed to tune my OS X terminal to send the correct key codes for Ctrl+left and right arrow (\033b and \033f). I found those information on the web. However, ...
8
votes
3answers
338 views

Clear / erase a mistyped password in a terminal

One thing that annoys me using Linux's terminal is when I have to type a invisble password, like when you run ssh the terminal I was wondering if there's a way to clear/erase the invisible password ...
6
votes
7answers
1k views

Minimalistic terminal music player that can play all my files randomly

I'm looking for a terminal music player. mpg321/mpg123 is quite what I need, but it can't play all my music directory (which contains child directories). cmus seems to be a bit of an overkill, as ...
5
votes
2answers
2k views

Processes do not respond to my signals

I have a strange behavior on my system. When I invoke a command in the shell (bash version 4.2.45(1)-release), say top or cat, the running program (the process) does not respond to Ctrl+C. I even ...
1
vote
1answer
319 views

Different representation of bash in 'ps -f' command [duplicate]

I have two bash running; one is Terminal application that runs bash, the other one is xterm application that runs bash. With ps -f, I have -bash one, and bash at the other. What makes this ...
0
votes
1answer
475 views

Some garbage characters in Linux terminal

My embedded linux app sometimes outputs the text like this: root@variscite /mnt/nfs$ ./test GPIO_IMX6_C: i=1 cannot open GPIO device file /sys/class/gpio/gð½Å¢ ...
2
votes
2answers
332 views

Why does the bell character have a limit?

If I repeatedly execute echo -e "\a" it will only sound on regular intervals rather than every time I execute the command. I've tried shortening the duration using xset but this doesn't seem to ...
3
votes
1answer
748 views

Saving terminal windows in mint

How can I save all the terminal tabs(with each current pwd in each tab) and terminal window positions.
2
votes
1answer
143 views

Why when I enter the command “hostname” it returns something other than my computers name?

I am using a macBook Pro I enter: new-host-2:~ Justin$ hostname And it returns: new-host-2.home Why is this when it says in setting/sharing my computers name is "Justin's macbook pro" and computers ...
23
votes
5answers
59k views

delete line in vi

How can I delete a line in VI? Here what I am doing right now: Open up the terminal alt + ctrl + t vi a.txt I move my cursor to the line which I wan to delete, then what key-combination is should ...
0
votes
3answers
1k views

Shell script testing through terminal simulation

I am developing a generic bash script which could be executed in different distro. I have only a CentOS virtual machine and I would be interested to test my script on a virtual terminal (online or ...
19
votes
9answers
5k views

How to make sure that a command is not interrupted, even if terminal is closed? [duplicate]

In Linux. Say I want to run a command and it takes too long. I just want to ensure it's done. How?
9
votes
2answers
3k views

Detect if running in a virtual terminal?

I'd like to autologin to tty1 on login and then use vlock to lock it. How can I detect from Bash if the current terminal is a console virtual terminal (e.g. tty1), so that I can put the vlock line ...
3
votes
2answers
2k views

Rename file in Mac OS Terminal using Regex

Hundreds of images need to be renamed with a terminal command using regex on MacOS 10.9 Mavericks. The files are named this way: 0045AW489R3T(IPCAM)_0_20131124101245_931.jpg 0021DF025C8E(IPCAM)...
0
votes
2answers
2k views

How to change background and text colors in Yakuake?

I like Yakuake, but I don't like the grey background color. I want to change the background and text colors of the Yakuake terminal. I checked the options, but the background color option is only ...
1
vote
1answer
174 views

Installing Certain PPAs

I'm following my own article: Making a Wireless Hotspot When I put in sudo add-apt-repository ppa:nilarimogard/webupd I get the message Cannot access PPA (https://launchpad.net/api/1.0/~...
3
votes
2answers
2k views

Is it correct to set the $TERM variable manually?

I set the $TERM variable adding the line XTerm*termName: xterm-256color to my .Xresources file. When I did it I didn't know what exactly that meant (I was following an online guide to change the look ...
11
votes
1answer
9k views

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 ...
-3
votes
1answer
61 views

Need some type of shortcut [closed]

So first thing, I am not good Linux really beyond mildly advanced commands. I need some type of short cut from one fake folder called SD-card to a real folder called system/advt so whenever something ...
12
votes
2answers
3k views

Alt-Left to skip words does not work in terminal emulators

On a Debian Wheezy machine at previous job, I got used to Alt+Left and Alt+Right to skip between words on active command-line (in bash). However, since at home I have upgraded to Jessie (Debian 8.0, ...
1
vote
2answers
183 views

Is there a way to keep an app running after closing the terminal that calls it? [duplicate]

Say I run an app from a terminal, but in some cases I want to close the terminal but hope the app keeps running. Is there anyway to do so in Linux? I just found that when calling an app via "exec ...
4
votes
1answer
101 views

How do I generate the sequence “\e[Z” in a terminal?

It is bound to menu-complete in GNU readline. $ bind -p|grep menu "\e[Z": menu-complete # menu-complete-backward (not bound) # old-menu-complete (not bound) I think it's Meta-something.
2
votes
2answers
5k views

How to see all commands executed by the current user, in all sessions/screen/byobu terminals?

If there is debian box, some users have access to the root account, some of those users open an ssh connection and start executing commands, some open screen or byobu or other similar tools to execute ...