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Introduction to Linux - A Hands on Guide
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Agree with above, you need to feed us enough information for us to understand what you are going to need.
If my program returned a data file like that, with no time stamp or sequence number, I would be ashamed.
GNUPLOT could be used to extract and plot data for that format, but it would be slightly ugly. There is no way to reorder the data and reliably maintain any interesting kind of relationships, so the current order must be preserved.
I am using geany as IDE. language is C. the values are of four different channels from MCP3208 which give them to pi and pi apply certain features like MAV and RMS etc to these values which are saved in .dat/.csv file. i have to plot them seperately but as they are in same column so gnuplot is taking all of them plotting a single graph which of no use... i have to chnage them into four diffrent columns. i have tried changing loops but vain....
Matches any single character in LIST: for example, `[aeiou]'
matches all vowels. A list may include sequences like
`CHAR1-CHAR2', which matches any character between (inclusive)
CHAR1 and CHAR2.
A leading `^' reverses the meaning of LIST, so that it matches any
single character _not_ in LIST. To include `]' in the list, make
it the first character (after the `^' if needed), to include `-'
in the list, make it the first or last; to include `^' put it
after the first character.
so 's/[^ ]*=//g' matches the non-space characters and the '=', and replaces them with nothing, for every occurrence in the line. The space character is preserved, so no major problem.