1
vote
1answer
50 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 ...
3
votes
1answer
70 views

How to find out the escape sequence my keyboards sends to terminal?

Let's say we have a generic keyboard with some unknown keys which may send escape sequences to terminal. The keyboard is connected to an xterm terminal emulator running on a generic BSD/Linux. To ...
3
votes
1answer
36 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.
3
votes
5answers
262 views

What are the special characters to print from a script to move the cursor?

I found that by printing \r from a script the cursor moves to the beginning of the line. What character will move the cursor up one line? Where is a list of these special characters? EDIT: Working ...
2
votes
1answer
92 views

Garbled text in tmux menus

I am trying to use the st terminal, but after starting tmux (or screen) in a remote ssh session, the text becomes all garbled. Exiting tmux/screen makes text normal again. Now, I have found that this ...
2
votes
1answer
197 views

highlighting text in shell

I have always been using below method to highlight background of text in shell . tput smso;printf " TEXT ";tput rmso; How can I achieve the same thing without using tput( I mean some way formatting ...
2
votes
1answer
102 views

Is it possible to get a character at terminal cursor using ANSI escape codes?

I know I can move the cursor with the escape codes, and I can also print at the cursor. What I'd like to know is if it is possible to pull the character under the cursor. I tried searching for such a ...
4
votes
3answers
918 views

Where do I find a list of terminal key codes to remap shortcuts in bash?

For example: "\e[1;5C" "\e[Z" "\e-1\C-i" I only know bits and pieces, like \e stands for escape and C- for Ctrl, but what are these numbers (1) and letters (Z)? What are the ;, [ and - signs for? ...
0
votes
1answer
53 views

What characters in my printed boot scroll are artifacts?

I am a tech writer and I need to include a boot dump in a document. The dump the engineers gave me has some "bad characters" that I need to delete. What form does a "bad character" take? There are ...
2
votes
1answer
97 views

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: ...
2
votes
1answer
1k views

Backspace, del, arrow keys not working with interactive programs in Tilda

I currently run Openbox on a light netinstall of Debian. In Tilda, when I use a program like nslookup or winexe, some of my keys do not work properly. Backspace generates ^? Up generates ^[[A ...
0
votes
1answer
312 views

Escape Code to Change Cursor Shape

I know that Konsole supports an escape code like "\<Esc>]50;CursorShape=0\x7" that will change the cursor shape. I was wondering if any other terminal emulators support changing the cursor shape ...
4
votes
2answers
273 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 ...
4
votes
2answers
572 views

is it possible to send a control sequence to a terminal emulator using the keyboard

If you type echo -e '\eZ' and hit return in a shell running in an xterm, you'll see that the terminal emulator prints an obscure code 1;2c. This seems to indicate that xterm interprets the VT100 ...
11
votes
5answers
6k views

How to clear terminal completely?

When we use clear command or Ctrl+L in terminal, it clears terminal but we can still scroll back to view the last used commands. Is there a way to completely clear the terminal?
4
votes
2answers
313 views

DEC ANSI command sequence questions; cursor movement

So I'm writing a terminal emulation (I know, I should just compile putty, etc.) and am at the stage of plodding through vttest to make sure it's right. I'm basing it on the VT102 for now but will add ...
3
votes
2answers
1k views

Trying to print up down arrow keys

I have this: I read down arrow key abc@abc-ubuntu:~/bashpratice$ read -n 3 key ^[[Babc@abc-ubuntu:~/bashpratice$ I am able to grep for it abc@abc-ubuntu:~/bashpratice$ echo $key | grep '\[' [B ...
15
votes
4answers
6k 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) ...
3
votes
2answers
354 views

Unix Shell and colours

Can any one please help me understand this code snippet that I found in .profile file echo -en "\e[32;44m $(hostname) \e[m";echo -e "\e[m"
4
votes
1answer
519 views

Reverse control-code look up for terminals

My understanding is that terminals often use ANSI control-codes to represent non-alphanumeric character sequences. For example, when editing .inputrc for Bash in Linux, it's easy to find code ...