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1
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2answers
27 views

When to use bash ANSI C style escape, e.g. $'\n'

I don't use bash often but I recall in the past to pass a tab or newline on the command line I would have to escape the character using the special $ character before a single quoted string. Like ...
0
votes
1answer
17 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 ...
2
votes
1answer
32 views

What does xterm's Escape Sequence option do and how do I enable it?

xterm's control-right-click menu contains an option named Escape sequence. It is always disabled ("grayed out") in Ubuntu-14.04. What is this option is used for? How do I enable it? I am looking for ...
5
votes
2answers
143 views

Escape code 50 in xterm

My coworker has the following in the ~/.bash_profile of many of our servers: echo -e "\033]50;SetProfile=Production\a" The text doesn't seem to matter, since this also works: echo -e ...
2
votes
2answers
23 views

How to escape a Whole Variable?

In the answer of thisquestion: https://superuser.com/questions/163515/bash-how-to-pass-command-line-arguments-containing-special-characters It said that we have to put an arg of a function in ...
1
vote
1answer
20 views

What standard shell command can evaluate escaped Unicode in a stream?

I'm looking for a pipeable command that will convert substrings in the form of ‘\unnnn’ to the actual characters. For example: $ echo 'co\u00ebfficient' | what_command coëfficient
2
votes
1answer
36 views

Tar actions not working as intended

I have a huge uncompressed tar file (1 tb) and I want to check it, therefore I am trying to extract it to see if everything goes well. Since it is going to take a long time, I'd like to have some info ...
1
vote
1answer
40 views

Why does sed globally substitute only the first occurence in multiple substiutions?

I want to globally substitute all \n new line characters with their \n escape sequence and all ' single quote characters with two '' of them like so: function esc_foobar { # Escapes any "'" ...
2
votes
2answers
54 views

Meaning of backslash

Why the following command prints Smith but not \Smith? echo \Smith
5
votes
1answer
614 views

Why do I have to escape a “dot” twice?

I know that we can escape a special character like *(){}$ with \ so as to be considered literals. For example \* or \$ But in case of . I have to do it twice, like \\. otherwise it is considered ...
2
votes
3answers
147 views

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 ...
3
votes
2answers
157 views

How to change font colors in terminal?

I know how to change the font color via preferences, but it changes the color of ALL text, as in below:     What I'm going for is something more like this:     Any ...
0
votes
1answer
634 views

Proper escaping of double quotations for curl post data?

I'm trying to test out a server, by sending it JSON data and reading the response. I need to POST data like {"item":"value with spaces"} but when I use curl I find that it sends the backslashes as ...
2
votes
3answers
65 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
45 views

Proper use of escape characters in desktop file

I have a command with a working .desktop Exec key as follows: Exec=env XDG_CONFIG_HOME=/home/bean/.config/gedit/ gedit %U I would like to use the $HOME variable instead and it works in the terminal ...
1
vote
1answer
329 views

Exit of “> ” mode in Unix shell

In sh (not Bash), how would we abort execution of command when the prompt is in > mode? For example, when entering a string with quotes only at the beginning, it makes the prompt look like >, ...
1
vote
1answer
118 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 ...
5
votes
2answers
2k views

Why does Ctrl-D (EOF) exit the shell?

Are you literally "ending a file" by inputting this escape sequence, i.e. is the interactive shell session is seen as a real file stream by the shell, like any other file stream? If so, which file? ...
4
votes
1answer
195 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 ...
2
votes
2answers
127 views

Weird escape sequence

I need help identifying what this escape sequences represents. I see this sequence is autogenerating on my server's console, but I'm not sure what is the reason for that. Escape sequence: ^[[[D I've ...
3
votes
1answer
44 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
575 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 ...
13
votes
4answers
732 views

Is there any reason why I get ^[[A when I press up arrow at the console login screen?

Whenever I'm at the console login, I press up arrow intentionally to see the previously typed commands. But I see this ^[[A. But when I press Ctrl Alt Print Screen Scroll Lock Pause Break Page Up ...
2
votes
1answer
146 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 ...
3
votes
0answers
174 views

How to create a bash command which creates output that exactly mimics a source text file that can be pasted into bash shell where histexpand is on?

The goal is to create a bash one line command that can be copied and pasted - for instance published on a web forum - and then patches files. See it as a way to distribute a patch file by copy and ...
2
votes
2answers
241 views

Maximize xterm via bash script

I have found this answer providing how to manipulate the current xterm window's dimensions, ie: echo -ne "\e[8;30;30t" How can I modify this to maximize the window (xterm's alt + enter shortcut)? ...
1
vote
5answers
240 views

Deleting all files that begins with parenthesis

I have many files in a directory that begins with parenthesis. They are generated by Dropbox due to conflict. Any combination of escaping does not seem to help: rm -rf "(*" rm -rf "\(*" rm -rf \(* ...
2
votes
1answer
109 views

What characters TAR doesn't like?

I keep a list of photos burned to dvds for incremental backups but I got into a strange situation where a file was already burned into a dvd but tar keeps saying it's not. Here the steps to reproduce: ...
1
vote
0answers
19 views

Using tput in $PS1 is breaking line wrapping [duplicate]

Good Morning- I'm trying to use tput outputs in my $PS1 to set the background color to red in the event I'm on a production server: if [[ `hostname -s` = prod-db ]]; then export ...
2
votes
2answers
564 views

\uFFFD character in directory name

I have a lot of directories with a \uFFFD (65533) character in it. The problem is that I can't really access this directory because of this character. For example I got a directory with the name: ...
4
votes
2answers
268 views

The difference between \e and ^[

Gilles wrote: character 27 = 033 = 0x1b = ^[ = \e Demizey wrote: ^[ is just a representation of ESCAPE and \e is interpreted as an actual ESCAPE character Then I also found this line from ...
6
votes
3answers
3k views

Escape sequences with “echo -e” in different shells

I just noticed that it seems like the flag -e does not exist for the echo command in my shell on Linux. Is this just a messed up setting or is it "normal"? Some code as an example: #!/bin/sh echo -e ...
2
votes
1answer
351 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
738 views

Visualizing ansi color escape codes in log files correctly in Emacs [duplicate]

I have some log files that have ansi-color codes in them. When I open them in Emacs I see garbage:           As an example, I run the following: ls --color=yes -ald -- * ...
1
vote
1answer
220 views

Cannot echo colored text when inserting in status bar in dwm

I'm using Fedora 18. I'm trying to create a custom status bar in dwm. Now what I'm thinking of is to check if the battery is under a certain level, the background of the battery region in the status ...
2
votes
1answer
133 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 ...
6
votes
3answers
2k 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
72 views

can someone fix my PS1 for bash

I seem to have too many colour escapes so it only works in some prompts - can someone please correct for me ? PS1='\[\e[0:35m[\u@\e[0:33m\h\e[m \e[0:35m\w]\e[m \e[0:33m`git branch 2> /dev/null | ...
5
votes
2answers
3k views

Change colors in console/virtual terminal

Is there a way to alter all the available colors in console / virtual terminal? By console, I mean what you get after pressing CTRL + ALT + F1 and not anything like xterm or urxvt. So, I guess that ...
4
votes
5answers
324 views

How to use ' in alias?

I have one-line that I want to call using alias. while printf '%s ' "$(df -P / | awk 'NR==2 { print $(NF-1) }')"; do sleep 30; done I tried to escape ' like \' but it didn't work. What is the ...
3
votes
2answers
136 views

Can I make grep treat escaped multiline as a single line?

How can I make tools like grep treat multilines escaped with a backslash as a long single line? Let's say I have some files that looks like this: testvar=test1 \ test2 \ test3 ...
2
votes
2answers
977 views

Calling bash from sh (dash) with commands read from args, and “Unterminated quoted string”/“unexpected EOF”

Just thought I'd document this: I'm trying something very simple - set env variable in bash, and print it out: $ bash -c "a=1; echo a$a;" a $ bash -c "a=1; echo a\$a;" a1 Now I'd want this same ...
1
vote
2answers
174 views

How to print shell variables and values to be able to copy/paste them?

In Bash 4.2.25, the set and env output is not escaped, so shell escapes and any non-printable characters won't be copy-pasteable. Take for example this shell session: $ export foo=$'a\nbar=\baz' $ ...
0
votes
1answer
90 views

Colon breaks the variable subsitution [closed]

I am trying to lookup some C functions so that I could debug while using strace. So I setup a bash function to look it up in firefox (or links), but the substitution falls apart with : and escaping ...
0
votes
3answers
377 views

Can groff create a ps file with interpreted ANSI escape characters?

This question is inspired by this one on SU. How can I print bold or color using lp and ANSI escape sequences? I know how to display, for example, bold text in the terminal: $ echo -e ...
1
vote
2answers
322 views

How to escape text in awful.util.spawn_with_shell command?

Based on a suggestion, I've now got the following call in rc.lua: awful.util.spawn_with_shell('vlc $(xclip -o)') How do I ensure that the output of xclip is escaped so that space characters are not ...
1
vote
1answer
221 views

How to prevent double escaping?

I'm trying to put a bunch of images together into a pdf. I ran gm convert *.jpg out.pdf and it worked, but the images were not in the right order. I found that ls -v orders them correctly so then I ...
0
votes
1answer
60 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
116 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
162 views

Confused about when to escape metacharacters in pathnames

I'm pretty confused about under which circumstances do I need to escape metacharacters in pathnames. Consider the following example: I'm in the following working directory: $ echo $PWD ...