05-28-2008
First you have to find what time is 30 minutes befor the start of the script and that depend on your OS.
Try to post a data sample.
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Hi
i have a file which consists of the time records in following format
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8. Post Here to Contact Site Administrators and Moderators
Write a script named time that displays the time in standard 12-hour format, rather than 24-hour format. Allow the user to give a -m option to get 24-hour format. For example:
> date
Sun Feb 10 10:56:50 CST 2008
> time
10:56 AM
> date
Sun Feb 10 21:57:07 CST 2008
> time
9:57 PM
>... (0 Replies)
Discussion started by: satish24
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9. Shell Programming and Scripting
Hi All,
I have one file which contains time for request and response.
I want to calculate time difference in milliseconds for each line.
This file can contain 10K lines.
Sample file with 4 lines.
for first line.
Request Time: 15:23:45,255
Response Time: 15:23:45,258
Time diff... (6 Replies)
Discussion started by: Raza Ali
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LEARN ABOUT DEBIAN
gr_plot_psd_c
GR_PLOT_PSD_C(1) User Commands GR_PLOT_PSD_C(1)
NAME
gr_plot_psd_c - plot power spectral density using GNU Radio
SYNOPSIS
gr_plot_psd_c: [options] input_filename
DESCRIPTION
Takes a GNU Radio binary file (with specified data type using --data-type) and displays the I&Q data versus time as well as the power spec-
tral density (PSD) plot. The y-axis values are plotted assuming volts as the amplitude of the I&Q streams and converted into dBm in the
frequency domain (the 1/N power adjustment out of the FFT is performed internally). The script plots a certain block of data at a time,
specified on the command line as -B or --block. The start position in the file can be set by specifying -s or --start and defaults to 0
(the start of the file). By default, the system assumes a sample rate of 1, so in time, each sample is plotted versus the sample number. To
set a true time and frequency axis, set the sample rate (-R or --sample-rate) to the sample rate used when capturing the samples. Finally,
the size of the FFT to use for the PSD and spectrogram plots can be set independently with --psd-size and --spec-size, respectively. The
spectrogram plot does not display by default and is turned on with -S or --enable-spec.
OPTIONS
-h, --help
show this help message and exit
-B BLOCK, --block=BLOCK
Specify the block size [default=8192]
-s START, --start=START
Specify where to start in the file [default=0]
-R SAMPLE_RATE, --sample-rate=SAMPLE_RATE
Set the sampler rate of the data [default=1.0]
--psd-size=PSD_SIZE
Set the size of the PSD FFT [default=1024]
--spec-size=SPEC_SIZE
Set the size of the spectrogram FFT [default=256]
-S, --enable-spec
Turn on plotting the spectrogram [default=False]
SEE ALSO
gr_plot_char(1) gr_plot_const(1) gr_plot_fft_c(1) gr_plot_fft_f(1) gr_plot_float(1) gr_plot_int(1) gr_plot_iq(1) gr_plot_psd_c(1)
gr_plot_psd_f(1) gr_plot_qt(1) gr_plot_short(1)
gr_plot_psd_c 3.5 December 2011 GR_PLOT_PSD_C(1)