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Shell Programming and Scripting
Random lines selection form a file.
Post 302203877 by McLan on Tuesday 10th of June 2008 05:35:28 AM
06-10-2008
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1. Shell Programming and Scripting
Hi,
Could some one help me to get rid of visually blank lines from a file using shell or awk or sed (on Solaris machine)?
When I use grep grep -v ^$ inputfile >outputfile it removes some blank lines.. but it seems some tab plus space balnk lines remains.
thaen I used "grep -v '^]*$' ... (1 Reply)
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Hi,
I have a data file with millions of record (N). Each record was saved in 4 lines. So there are total of NX4 lines in the data file.
For Example:
Host1
a
b
c
d
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e
f
g
h
Host3
i
j
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Hi
i am writing a cron job. in this script i need to delete some line which is match with some pattern.
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Hello
Could you please help me to find a code that can randomly select 1224 lines from a file of 12240 and make tn output with 1224 line each.
my input is txt file with 12240 lines like :
13474 999003507 0 0 2 -9
13475 999003508 0 0 2 -9
13476 999003509 0 0 1 -9
13477 999003510 0 0 1 -9
... (7 Replies)
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hello, here is an example:
9.07
9.05
0.00
2.28
0.00
0.08
1.93
3.62
10.97
12.03
12.03
0.00
2.73
0.00
0.07 (3 Replies)
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Hello friends,
I have a TXT file with 300 lines in it. I need to shuffle all the lines (randomly) so that they get into different order. Can anyone pls provide easy way, if any?
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LEARN ABOUT DEBIAN
plotit
plotit(1) General Commands Manual plotit(1) NAME
plotit - experiment data visualization SYNOPSIS
plotit -w FILE plotit [-lp] -q FILE [FILE]... plotit [-lp] Y FILE [FILE...] plotit [-lp] X Y FILE [FILE...] DESCRIPTION
The plotit program is a simple plotting program which can draw line plots and stripcharts using a command language similar to that of gnu- plot. It can also make quick plots of multiple data files from the command-line. Wildcards may be used in the file names. The program takes optional expressions which can be used to manipulate data columns before plotting. Expressions may be as simple as the designation of a column to be plotted or may contain arithmetic expressions and functions. In the latter case the espression must be enclosed in 'single' or "double" quotation marks. Column numbers are designated by the at-sign character (@). A single expression is used for the Y axis of the plot. OPTIONS
-h, --help Print the usage and exit. --version Print the version number and exit. -w Watch the input file for commands to stripchart, or wait to read all of stdin before plotting. Only one file or - for stdin may be specified with this option. No other options may be used in conjuction with this option. -q Plot the first and second columns of each file. -l Plot with lines. -p Plot with points. EXAMPLES
Plot the second column versus the first of all three files with lines only. plotit -lq file1.dat file2.dat file3.dat Plot the quotient of the third column and the second column versus the first column of all files matching the pattern using points only. plotit -p '@3/@2' file??.dat Plot the natural log of the second column divided by the third column versus the fourth column. By default these data are plotted with both lines and points. plotit @4 'log(@2/@3)' file.dat AUTHOR
This manual page was written by Carlo Segre <segre@iit.edu>. February 21, 2009 plotit(1)