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Top Forums Shell Programming and Scripting Sorting a file with frequency on length Post 302783863 by hanson44 on Thursday 21st of March 2013 05:40:56 AM
Old 03-21-2013
Going back to post #3, assuming I copied and pasted correctly:

Code:
$ cat xxx.x
the 29962169
and 14291859
you 12345509
for 3296048
not 3091071
but 2994482
say 2345958
she 2123744
get 2081392
one 1988291
can 1915289
out 1812292
him 1571291
who 1543711
are 1487971
now 1453264
was 1399013
that 7834407
have 5930242
with 3983564

$ awk '{print length($1), $0}' xxx.x | sort -n -k1 -k3r | cut -d' ' -f2-
for 3296048
not 3091071
the 29962169
but 2994482
say 2345958
she 2123744
get 2081392
one 1988291
can 1915289
out 1812292
him 1571291
who 1543711
are 1487971
now 1453264
and 14291859
was 1399013
you 12345509
that 7834407
have 5930242
with 3983564

I see a problem. I'm sure there is some way to remedy this. But it seems to not sort correctly to me.

Who am I to disagree with Rob Pike? If he says "those days are dead" then I guess I should do everything with perl. Smilie

Seriously, I have nothing against others using perl, awk, sed, bash, python, whatever they want. And of course we must avoid "religious argument". I was mainly trying to encourage someone to try using Unix. I use Windows constantly, but do all the SW development and text processing on Unix, because it is so incredibly more productive for the kind of high-end work I do. I would grant that if you're stuck on DOS / Windows perl is probably a good idea to help processing text.

I just use the temp files to make the code clearer.
This User Gave Thanks to hanson44 For This Post:
 

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fb.modes(8)						     Linux frame buffer utils						       fb.modes(8)

NAME
fb.modes - frame buffer modes file DESCRIPTION
/etc/fb.modes contains an unlimited number of video mode descriptions. The general format of a video mode is: mode geometry <xres> <yres> <vxres> <vyres> <depth> timings <pixclock> <left> <right> <upper> <lower> <hslen> <vslen> options <value> endmode OPTIONS
geometry options: xres visible horizontal resolution (in pixels) yres visible vertical resolution (in pixels) vxres virtual horizontal resolution (in pixels) vyres virtual vertical resolution (in pixels) depth display depth (in bits per pixel) timing options: pixclock length of one pixel (in picoseconds) left left margin (in pixels) right right margin (in pixels) upper upper margin (in pixel lines) lower lower margin (in pixel lines) hslen horizontal sync length (in pixels) vslen vertical sync length (in pixel lines) other options: the first value of this options is the default hsync {low|high} the horizontal sync polarity vsync {low|high} the vertical sync polarity csync {low|high} the composite sync polarity extsync {false|true} enable or disable external resync. If enabled the sync timings are not generated by the frame buffer device and must be pro- vided externally instead. Note that this option may not be supported by every frame buffer device laced {false|true} enable or disable interlace. If enabled the display will be split in two frames, each frame contains only even and odd lines respectively. These two frames will be displayed alternating, this way twice the lines can be displayed and the vertical fre- quency for monitor stays the same, but the visible vertical frequency gets halved double {false|true} enable or disable doublescan. If enabled every line will be displayed twice and this way the horizontal frequency can easily be doubled, so that the same resolution can be displayed on different monitors, even if the horizontal frequency specifica- tion differs. Note that this option may not be supported by every frame buffer device INTERNALS
Generally a frame buffer display is organized as follows: +---+---------------+---+---+ | | ^ | | | | | | 5 | | | | | v | | | +---#################---+---+ | # ^ # | | | # | # | | | # | # | | | 1 # | 2 # 3 | 4 | |<->#<------+------>#<->|<->| | # | # | | | # | 6 # | | | # | # | | | # v # | | +---#################---+---+ | | ^ | | | | | | 7 | | | | | v | | | +---+---------------+---+---+ | | ^ | | | | | | 8 | | | | | v | | | +---+---------------+---+---+ 1 left margin 2 xres 3 right margin 4 horizontal sync len 5 upper margin 6 yres 7 lower margin 8 vertical sync len The area bordered with `#' is the visible display area. Horizontal and vertical frequencies can now easily be calculated, for this the sum of horizontal or vertical values are important htotal = left + xres + right + hslen vtotal = upper + yres + lower + vslen The length of one line can now be calculated with pixclock line = pixclock * htotal and we have the horizontal frequency hfreq = 1E12 / line = 1E12 / (pixclock * htotal) To get the vertical frequency vtotal must eventually adjusted. If the display is laced, vtotal must be halved or if the display is a dou- blescan one, vtotal must be doubled. Now we can calculate the length of one frame if (lace) vtotal /= 2 if (double) vtotal *= 2 frame = vtotal * line and we get also the vertical frequency vfreq = 1E12 / frame = hfreq / vtotal SEE ALSO
fbset(8), fbdev(4) local Aug 1996 fb.modes(8)
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