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Full Discussion: BASH command not found strang behavior
Operating Systems Linux Red Hat BASH command not found strang behavior Post 302489093 by Corona688 on Wednesday 19th of January 2011 12:31:44 PM
Old 01-19-2011
'reset' resets your terminal characteristics to normal.

You must have run something that dumped a bunch of non-ASCII characters into the terminal. Some of which your terminal coincidentally managed to understand as escape sequences, mashing random settings in your terminal(colors, font settings, scrolling regions, etc) until it was unable to show proper output anymore.
 

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LEARN ABOUT X11R4

terminal-colors.d

TERMINAL_COLORS.D(5)						 terminal-colors.d					      TERMINAL_COLORS.D(5)

NAME

       terminal-colors.d - Configure output colorization for various utilities

SYNOPSIS

       /etc/terminal-colors.d/[[name][@term].][type]

DESCRIPTION

       Files in this directory determine the default behavior for utilities when coloring output.

       The name is a utility name.  The name is optional and when none is specified then the file is used for all unspecified utilities.

       The term is a terminal identifier (the TERM environment variable).  The terminal identifier is optional and when none is specified then the
       file is used for all unspecified terminals.

       The type is a file type.  Supported file types are:

       disable
	      Turns off output colorization for all compatible utilities.

       enable Turns on output colorization; any matching disable files are ignored.

       scheme Specifies colors used for output.  The file format may be specific to the utility, the default format is described below.

       If there are more files that match for a utility, then the  file  with  the  more  specific  filename  wins.   For  example,  the  filename
       "@xterm.scheme" has less priority than "dmesg@xterm.scheme".  The lowest priority are those files without a utility name and terminal iden-
       tifier (e.g. "disable").

       The user-specific $XDG_CONFIG_HOME/terminal-colors.d or $HOME/.config/terminal-colors.d overrides the global setting.

EXAMPLES

       Disable colors for all compatible utilities:
	      touch /etc/terminal-colors.d/disable

       Disable colors for all compatible utils on a vt100 terminal:
	      touch /etc/terminal-colors.d/@vt100.disable

       Disable colors for all compatible utils except dmesg(1):
	      touch /etc/terminal-colors.d/disable

	      touch /etc/terminal-colors.d/dmesg.enable

DEFAULT SCHEME FILES FORMAT

       The following statement is recognized:

	      name color-sequence

       The name is a logical name of color sequence (for example "error").  The names are specific to the utilities.  For more details always  see
       the COLORS section in the man page for the utility.

       The color-sequence is a color name, ASCII color sequences or escape sequences.

   Color names
       black,  blink,  blue,  bold,  brown,  cyan,  darkgray,  gray, green, halfbright, lightblue, lightcyan, lightgray, lightgreen, lightmagenta,
       lightred, magenta, red, reset, reverse, and yellow.

   ANSI color sequences
       The color sequences are composed of sequences of numbers separated by semicolons.  The most common codes are:

	       0   to restore default color
	       1   for brighter colors
	       4   for underlined text
	       5   for flashing text
	      30   for black foreground
	      31   for red foreground
	      32   for green foreground
	      33   for yellow (or brown) foreground
	      34   for blue foreground
	      35   for purple foreground
	      36   for cyan foreground
	      37   for white (or gray) foreground
	      40   for black background
	      41   for red background
	      42   for green background
	      43   for yellow (or brown) background
	      44   for blue background
	      45   for purple background
	      46   for cyan background
	      47   for white (or gray) background

   Escape sequences
       To specify control or blank characters in the color sequences, C-style -escaped notation can be used:

	      a   Bell (ASCII 7)
	         Backspace (ASCII 8)
	      e   Escape (ASCII 27)
	      f   Form feed (ASCII 12)
	      
   Newline (ASCII 10)
	      
   Carriage Return (ASCII 13)
	      	   Tab (ASCII 9)
	      v   Vertical Tab (ASCII 11)
	      ?   Delete (ASCII 127)
	      \_   Space
	      \   Backslash ()
	      ^   Caret (^)
	      #   Hash mark (#)

       Please note that escapes are necessary to enter a space, backslash, caret, or any control character anywhere in the string, as  well  as  a
       hash mark as the first character.

       For example, to use a red background for alert messages in the output of dmesg(1), use:

	      echo 'alert 37;41' >> /etc/terminal-colors.d/dmesg.scheme

   Comments
       Lines where the first non-blank character is a # (hash) are ignored.  Any other use of the hash character is not interpreted as introducing
       a comment.

FILES

       $XDG_CONFIG_HOME/terminal-colors.d
       $HOME/.config/terminal-colors.d
       /etc/terminal-colors.d

ENVIRONMENT

       TERMINAL_COLORS_DEBUG=all
	      enables debug output.

COMPATIBILITY

       The terminal-colors.d functionality is currently supported by all util-linux utilities which provides colorized output.	For  more  details
       always see the COLORS section in the man page for the utility.

AVAILABILITY

       terminal-colors.d  is  part  of	the  util-linux package and is available from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils
       /util-linux/>.

util-linux							   January 2014 					      TERMINAL_COLORS.D(5)
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