I'm trying to code a bash script and I was wondering how to extract a specific line from a stream.
E.g.
My file "file" contains three lines and i'd like to find a function f which returns after execution a specific line like the second line, which would be :
Code:
f(file, 2) = Second line of the file (String form)
I was trying to make so with grep, less, cat, more, ... but I can't figure oout any way to make it happens.
Ok to be more precise, I wanna print the name of the n-file in the "ls -1" stream. For example if I type "ls -1", here's the output:
Code:
file1
file2
file3
My script prompts the user to specify the name of the file n he wants to read.
If the user type 2, the new output would be "file2" (string form).
The final line instruction would be something like :
Code:
f( $(ls -1) , n) = the n-line of the output of "ls -1"
Ok so much lines for a little trouble.
I hope someone knows a solution for it, and since i'm french and i'm not sure my problem is well-posted feel free to ask other questions.
Hi
I want to extract certain text between two line numbers like
23234234324 and
54446655567567
How do I do this with a simple sed or awk command?
Thank you.
---------- Post updated at 06:16 PM ---------- Previous update was at 05:55 PM ----------
found it:
sed -n '#1,#2p'... (1 Reply)
Hi
I used this command:
mplayer http://host/axis-cgi/mjpg/video.cgi -user root -passwd root \
-cache 1024 -fps 25.0 -nosound -vc ffh264 \
-demuxer 3 -dumpstream -dumpfile output.avi It's ok but...
Video Playing is very fast! Why? Is it a synch problem?
What parameter I have to use for... (1 Reply)
Hi,
I need to extract <APPNUMBER> tag alone, if the <college> haas IIT Chennai value. college tag value will have spaces embedded. Those spaces should not be suppresses.
My Source file
<Record><sno>1</sno><empid>E0001</empid><name>Rejsh suderam</name><college>IIT ... (3 Replies)
Hi guys,
I have txt file and I would need to extract all the contents between specific line numbers.
Line 1: apple
Line 2: orange
Line 3: mango
Line 4: grapes
Line 5: pine apple
I need to extract the content between line 2 and 4, including the contents of Line 2 and 4 so the ouput... (2 Replies)
Say the input was as follows:
Brat 20 x 1000 32rf
Pour 15 p 1621 05pr
Dart 10 z 1111 22xx
My program prompts for an input, what I want is to use the input to locate a specific field. Like if I type in, "Pou" then it would return "Pour" and just "Pour"
I currently have this line but it is... (6 Replies)
I have hundreds of files to process. In each file
I need to look for a pattern then
extract value(s) from next line and then
search for value(s) selected from point (2) in the same file at a specific position.
HEADER ELECTRON TRANSPORT 18-MAR-98 1A7V
TITLE CYTOCHROME... (7 Replies)
Hi guys,
I have been trying to do this, but... no luck so maybe you can help me.
I have a line like this:
Total Handled, Received, on queue Input Mgs: 140 / 14 => 0
I need to, get the number after the / until the =, to get only 14 .
Any help is greatly appreciated.
Thanks, (4 Replies)
Hi all,
Happy new year!
Here I have a problem with extract specific information from each line in unix:
My file is the dbSNP flat file, take two SNPs for examples:
REFSNP-DOCSUM-SET (FULL-DUMP)
CREATED ON: 2012-06-08 10:50
rs782 | human | 9606 | snp | genotype=NO |... (6 Replies)
Hello;
I have this rather tricky problem to solve --(to me, anyways) ..
I am processing the following one liner with tcpdump..
tcpdump -i T3501 -A ether host 00:1e:49:29:fc:c9 or ether host 00:1b:2b:86:ec:1b or ether host 00:21:1c:98:a4:08 and net 149.83.6.0/24 | grep --line-buffered -B... (5 Replies)
Hi
This is my first post and I'm just a beginner. So please be nice to me.
I have a couple of html files where a pattern beginning with "http://www.site.com" and ending with "/resource.dat" is present on every 241st line. How do I extract this to a new text file?
I have tried sed -n 241,241p... (13 Replies)
Discussion started by: dejavo
13 Replies
LEARN ABOUT DEBIAN
rackdiag
NWDIAG(1) General Commands Manual NWDIAG(1)NAME
rackdiag - generate rack-structure-diagram image file from spec-text file.
SYNOPSIS
rackdiag [options] files
DESCRIPTION
This manual page documents briefly the rackdiag commands.
rackdiag is generate sequence-diagram image file from spec-text file.
OPTIONS
These programs follow the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is
included below. For a complete description, see the Info files.
-h, --help
show this help message and exit.
--version
show program's version number and exit.
-a, --antialias
Pass diagram image to anti-alias filter.
-c FILE, --config=FILE
read configurations from FILE.
-o FILE
write diagram to FILE.
-f FONT, --font=FONT
use FONT to draw diagram.
-T TYPE
Output diagram as TYPE format.
SEE ALSO
The programs are documented fully by
http://blockdiag.com/en/nwdiag/
AUTHOR
rackdiag was written by Takeshi Komiya <i.tkomiya@gmail.com>
This manual page was written by Kouhei Maeda <mkouhei@palmtb.net>, for the Debian project (and may be used by others).
June 11, 2011 NWDIAG(1)
01-08-2011
Extract a specific line from a stream
