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Full Discussion: Generating Combinations
Top Forums Shell Programming and Scripting Generating Combinations Post 302299270 by zorg4u on Thursday 19th of March 2009 05:02:08 PM
Old 03-19-2009
Generating Combinations

Hi,
I need to generate all combinations upto n-1 level,
if the input file looks like say,
A
B
C
D
.
.
....

I need to generate all combinations such that first value remains constant and the remaning are combined with all possible ways.

Output

A
AB
AC
AD
ABC
ABD
ACD
ABCD
........

The input file can contain maximum of 40 values. so the combinations could be extremely high.

Any suggestions atleast how to approach generating the combinations would be helpful. Thanks in advance!!!
 

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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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