04-01-2009
Use nawk or /usr/xpg4/bin/awk on Solaris.
Regards
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello,
Can someone help me to do this with awk or sed? I have a file with multiple lines, each line has many fields separated with a tab. I would like to add one more field holding 'na' in between the first and second fields.
old file looks like,
1, field1 field2 field3 ...
2, field1... (7 Replies)
Discussion started by: ssshen
7 Replies
2. UNIX for Dummies Questions & Answers
Hello,
I have about 100 files in a directory with fields which are tab delimited. I would like to append the file name as the first field and it has to be done as many times as the total lines in the file.
For example,
myFile1.txt has the following data:
1 x y z
2 a b ... (5 Replies)
Discussion started by: Gussifinknottle
5 Replies
3. Shell Programming and Scripting
Hi,
I have a pipe delimited txt file which contains 17 fields per line/row.
16th field contains email id. I want to count the number of lines/rows that contains null in the 16th field.
Plz find attached example data file.
I'm looking for a command line/script which achieves this.
... (5 Replies)
Discussion started by: Sriranga
5 Replies
4. Shell Programming and Scripting
Need help. I tried using an awk command to pad zeroes. Unfortunately, the "|" pipe delimited character is gone when I tried to write the records to another file.
awk -F \| ' {$1=sprintf("%06s", $1); print $0}' $CUSTFINAL2 > $CUSTFINAL3
BEFORE
"KEYRECORD"|"SA ID"|"PER ID"|"SP ID"|"ACCT... (3 Replies)
Discussion started by: johnhips
3 Replies
5. Shell Programming and Scripting
I have a comma (,) delimited file.
106232145,"medicare","medicare,medicaid",789
I would like to count the number of fields in each line.
I tried the below code
awk -F ',' '{print NF-1}'
This returns me the result as 5 instead of 4. This is because the awk takes... (9 Replies)
Discussion started by: machomaddy
9 Replies
6. Shell Programming and Scripting
Hi,
In my file (which is "," delimited and text qualifier is "), I have to extract a particualr field.
file1:
1,"aa,b",4
expected is the 2nd field:
aa,b
I tried the basic cut -d "," -f 2 file 1, this gave me
aa alone instead aa,b.
A small hint ot help on this will be very... (5 Replies)
Discussion started by: machomaddy
5 Replies
7. UNIX for Dummies Questions & Answers
i need to add a new field in a pipe delimited line. the field will be the current date today.
aa|a|s|w|1
as|oiy|oiy|oiy|2
given that all lines are uniformed in the number of fields
i want it to look like this:\
aa|a|s|w|1|20120126
as|oiy|oiy|oiy|2|20120126
please help :) (3 Replies)
Discussion started by: kokoro
3 Replies
8. Shell Programming and Scripting
I need to write a shell script "cmn" that, given an integer k, print the k most common words in descending order of frequency.
Example Usage:
user@ubuntu:/$ cmn 4 < example.txt :b: (3 Replies)
Discussion started by: mohit_iitk
3 Replies
9. Shell Programming and Scripting
Hi,
I have a '~' delimited file and i want to remove the last field using awk. Please find the sample records below:
1428128~1~0~1100426~003~50220~005~14~0~194801~11~0~3~14~0~50419052335~0~0820652001~2~00653862 ~0~1~0~00126~1~20000110~20110423~R~ ~0~Z~1662.94~ ~002041~0045~Z~... (3 Replies)
Discussion started by: Arun Mishra
3 Replies
10. Shell Programming and Scripting
Hi,
I have the requirement similar to the one mentioned in the below thread.
https://www.unix.com/unix-for-dummies-questions-and-answers/128155-search-replace-string-only-particular-column-delimited-file.html
The only difference is that I need to change the field for row 1,2 and the last... (14 Replies)
Discussion started by: chetanojha
14 Replies
LEARN ABOUT DEBIAN
numm.spectral-analysis
spectral-analysis(7) Numm Tutorials spectral-analysis(7)
NAME
spectral analysis - perform realtime spectral analysis
SYNOPSIS
numm-run FILE
DESCRIPTION
Frequency makes for a meaningful description of many audio signals. We can use numpy's fourier analysis to compute spectra from the micro-
phone and display the results visually. We will break down the process into smaller parts: baby steps...
First, create and save a skeletal file that moves a line across the screen:
idx = 0
def video_out(a):
global idx
a[:,idx] = 255
idx = (idx + 1) % a.shape[1]
def audio_in(a):
pass
Save this snippet and run it with numm-run.
We will use the numpy.fft module for our analysis. First we define a function to get a particular frequency from the fourier transform:
import numpy as np
def get_freq(fourier, frequency):
freqs = np.fft.fftfreq(len(fourier), 1/44100.0)
nearest = (abs(freqs - frequency)).argmin()
return abs(fourier[nearest])
Next, we hook up this function to audio input from the microphone. A frequency bin is chosen on a log scale for each row on the screen to
display a spectogram. In total:
import numpy as np
idx = 0
recent_audio = np.zeros(4096, np.int16)
recent_video = np.zeros((240,320,3), np.uint8)
freq_bins = np.exp2(np.linspace(np.log2(27000),np.log2(27),240))
def get_freq(fourier, frequency):
freqs = np.fft.fftfreq(len(fourier), 1/44100.0)
nearest = (abs(freqs - frequency)).argmin()
return abs(fourier[nearest])
def video_out(a):
global idx
fourier=np.fft.fft(recent_audio)
values =np.array([get_freq(fourier,X) for X in freq_bins])
recent_video[:,idx,1] = (values/10000).clip(0,255)
idx = (idx + 1) % a.shape[1]
a[:] = np.roll(recent_video, -idx, axis=1)
def audio_in(a):
recent_audio[:] = np.roll(recent_audio, len(a))
recent_audio[:len(a)] = a.mean(axis=1)
SEE ALSO
numm-run(1), numm.getting-started(7), numm.one-bit-instrument(7)
numm February 2012 spectral-analysis(7)