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UNIX for Dummies Questions & Answers
How get only required lines & delete the rest of the lines in file
Post 302426137 by reva on Tuesday 1st of June 2010 01:41:19 AM
06-01-2010
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1. Shell Programming and Scripting
I have a file containing the following contents
All of us, including Zippy, our dog
All of us, including Zippy and Zippy
All of us, including Zippy and Zippy and Zelda
Testing All of us Zippy
Now, i wanna grep and get the lines which has only one occurance of word Zippy and starting with... (1 Reply)
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Hi all,
I have the following data in a file x.csv:
> ,this is some text here
> ,,,,,,,,,,,,,,,,2006/11/16,0.23
> ,,,,,,,,,,,,,,,,2006/12/16,0.88
< ,,,,,,,,,,,,,,,,this shouldnt be deleted
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I have a files in a directory in this format
data
data
data
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data
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data
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4. Shell Programming and Scripting
Input:
a
b
b
c
d
d
I need:
a
c
I know how to get this (the lines that have duplicates) :
b
d
sort file | uniq -d
But i need opossite of this. I have searched the forum and other places as well, but have found solution for everything except this variant of the problem. (3 Replies)
Discussion started by: necroman08
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5. UNIX for Advanced & Expert Users
Hi All,
I have a very huge file (4GB) which has duplicate lines. I want to delete duplicate lines leaving unique lines. Sort, uniq, awk '!x++' are not working as its running out of buffer space.
I dont know if this works : I want to read each line of the File in a For Loop, and want to... (16 Replies)
Discussion started by: krishnix
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6. Shell Programming and Scripting
hey guys,
I tried searching but most 'search and replace' questions are related to one liners.
Say I have a file to be replaced that has the following:
$ cat testing.txt
TESTING
AAA
BBB
CCC
DDD
EEE
FFF
GGG
HHH
ENDTESTING
This is the input file: (3 Replies)
Discussion started by: DeuceLee
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7. Shell Programming and Scripting
Hello,
I'm trying to figure out how to use sed or awk to delete single lines in a file. By single, I mean lines that are not touching any other lines (just one line with white space above and below).
Example:
one
two
three
four
five
six
seven
eight
I want it to look like: (6 Replies)
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8. Shell Programming and Scripting
Hello,
I have file of more than 10000 lines.
I want to delete 40 lines after every 20 lines.
e.g from a huge file, i want to delete line no from 34 - 74, then 94 - 134 etc and so on.
Please let me know how i can do it.
Best regards, (11 Replies)
Discussion started by: nehashine
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9. Shell Programming and Scripting
Hi,
cat test.txt
BlankLine
BlankLine
BlankLine
BlankLine
ello
hi
helo
BlankLine
BlankLine
heylo
BlankLine
BlankLine
BlankLine
done
BlankLine
BlankLine
BlankLine (1 Reply)
Discussion started by: TomG
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10. UNIX for Beginners Questions & Answers
Hi all, I was wondering if anyone would know how to search & delete inclusively between two lines, please:
Important:
There are multiple }; lines. I'm curious how to delete the correct one only.
Line numbers may vary each time this script is run.
For example, I'd like to delete only the... (6 Replies)
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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)