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Top Forums Shell Programming and Scripting Grep with ... matching more than 3 characters Post 302904160 by sreeharshasn on Monday 2nd of June 2014 12:39:48 PM
Old 06-02-2014
Ubuntu Grep with ... matching more than 3 characters

I am trying to understand what the grep command in ubuntu is trying to do here.
The contents of my test file is given below
Code:
harsha@harsha-H67MA-USB3-B3:~/Documents$ cat data
abcd
efghi
jklmno
pqr
stuv
wxyz

When I grep for 3 dots (...) without the parenthesis as follows I would expect the output to match the first 3 characters in the above file. But the output I am seeing shows that it matches more than 3 characters in some lines. Can anyone help me here understand why the 3rd line is being shown to match more than 3 characters.

Code:
harsha@harsha-H67MA-USB3-B3:~/Documents$ grep ... data
abcd
efghi
jklmno
pqr
stuv
wxyz

 

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set_color(1)							       fish							      set_color(1)

NAME
set_color - set_color - set the terminal color set_color - set the terminal color Synopsis set_color [-v --version] [-h --help] [-b --background COLOR] [COLOR] Description Change the foreground and/or background color of the terminal. COLOR is one of black, red, green, brown, yellow, blue, magenta, purple, cyan, white and normal. o -b, --background Set the background color o -c, --print-colors Prints a list of all valid color names o -h, --help Display help message and exit o -o, --bold Set bold or extra bright mode o -u, --underline Set underlined mode o -v, --version Display version and exit Calling set_color normal will set the terminal color to whatever is the default color of the terminal. Some terminals use the --bold escape sequence to switch to a brighter color set. On such terminals, set_color white will result in a grey font color, while set_color --bold white will result in a white font color. Not all terminal emulators support all these features. This is not a bug in set_color but a missing feature in the terminal emulator. set_color uses the terminfo database to look up how to change terminal colors on whatever terminal is in use. Some systems have old and incomplete terminfo databases, and may lack color information for terminals that support it. Download and install the latest version of ncurses and recompile fish against it in order to fix this issue. Version 1.23.1 Sun Jan 8 2012 set_color(1)
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