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Full Discussion: Regex to match only first occurence with grep
Top Forums Shell Programming and Scripting Regex to match only first occurence with grep Post 302847829 by Ophiuchus on Wednesday 28th of August 2013 12:49:49 AM
Old 08-28-2013
Hello Scott,

Thanks for your help. I want to do it in grep because I need to extract the matched strings using grep -o.

Actually, for the first example, I want to match only things that are between 3 and 6. That would be fine, not needed to match
only the first occurrence.

But for this new string, I want to match only the pattern 347 + something + 35 + 4 characters. And
After the patterns always follow 6789. But with the regex I'm trying is not printing anything.


Code:
echo "1234725493512216789012523475700354912350214678902002" | grep --color -e '347[^67]*35.{4}'

The match strings should be those 2 in red:
Code:
123472549351221678971252347570035491235021467890200

Maybe could be done with grep this.

Thanks in advance.
Last edited by Ophiuchus; 08-28-2013 at 01:58 AM..
 

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LEARN ABOUT OSX

set_color

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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