08-31-2017
Any attempts / ideas / thoughts from your side? You promised last time...
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I am reading a file that contains over 5000 lines and I want to assign it to a shell variable array (which has a restriction of 1024 rows). I had an idea that if I could grab 1000 record hunks of the file, and pipe the records out, that I could perform a loop until I got to the end and process 1000... (5 Replies)
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Hi Experts,
I have files name
report_20090416
report_20090417
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report_20090421
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Hi,
I have a file with the below like values with integers only in sorted order (May or may not be in sequence)
Eg: File1.txt
-----------
1
2
3
4
5
6
.
.
.
.
.
10000
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5. Shell Programming and Scripting
Hi Everyone,
a.txt
1272904667;1272904737;1
1272904747;1272904819;1
1272904810;1272904857;1
1272904889;1272904926;1
1272905399;1272905406;1
1272905411;1272905422;1
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6. Shell Programming and Scripting
Hi
Input
10 131
11 179
11 170
20 142
20 131
20 144
21 178
22 155
22 196
23 144
23 184
24 194
24 191
24 218
25 167
25 131
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7. Programming
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I have a list of columns with values that I need to transform into a row containing the range of each column. For example:
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1
2
3
4
10
12
14
15
16
17
18
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4
5
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I have given my requirement below:
Input:
atr files:
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10. Shell Programming and Scripting
Gents,
It is possible to generate a range of values according to column 1 and count the total of rows in the range.
example
input
15.3
15.5
15.8
15.9
16.0
16.1
16.8
17.0
17.5
18.0
output desired
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LEARN ABOUT V7
ppmtosixel
ppmtosixel(1) General Commands Manual ppmtosixel(1)
NAME
ppmtosixel - convert a portable pixmap into DEC sixel format
SYNOPSIS
ppmtosixel [-raw] [-margin] [ppmfile]
DESCRIPTION
Reads a portable pixmap as input. Produces sixel commands (SIX) as output. The output is formatted for color printing, e.g. for a DEC
LJ250 color inkjet printer.
If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled. A printer control header and a color assignment table
begin the SIX file. Image data is written in a compressed format by default. A printer control footer ends the image file.
OPTIONS
-raw If specified, each pixel will be explicitly described in the image file. If -raw is not specified, output will default to com-
pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands. A raw file is often an order of magni-
tude larger than a compressed file and prints much slower.
-margin
If -margin is not specified, the image will be start at the left margin (of the window, paper, or whatever). If -margin is speci-
fied, a 1.5 inch left margin will offset the image.
PRINTING
Generally, sixel files must reach the printer unfiltered. Use the lpr -x option or cat filename > /dev/tty0?.
BUGS
Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion. If the original PPM maxval was
greater than 100, rescaling also reduces the image depth. While the actual RGB values from the ppm file are more or less retained, the
color palette of the LJ250 may not match the colors on your screen. This seems to be a printer limitation.
SEE ALSO
ppm(5)
AUTHOR
Copyright (C) 1991 by Rick Vinci.
26 April 1991 ppmtosixel(1)