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Top Forums Shell Programming and Scripting remove blank lines and merge lines in shell Post 302502625 by dvah on Tuesday 8th of March 2011 01:06:10 PM
Old 03-08-2011
Quote:
Originally Posted by yinyuemi
Code:
awk '{printf NF?$0:"\n"}'

This really works good, but i cudnt exactly understand the logic behind it. I'm aware NF is for no. of fields in each line and \n is for newline.

But i cudnt understand the whole logic, if u cud explain me, that be really helpful for me to make changes to this in future.

Grateful to your comments.

Many Thanks!

---------- Post updated at 11:36 PM ---------- Previous update was at 11:31 PM ----------

Thanks for all ur comments. It works weel and good.

I just need another help here.

I need to add a extra delimiter at end of each line. I'll go with the same ex that i posted above.

-in format
xx,xx,xx ,xx , , , , ,,xx,xxxx,
xxxx,, ,, xxx,,

yyy,yy,yy, , , ,yyy,yy,,
yyy,yy,,,yyyyy,

....
 

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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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