01-14-2016
... which then is modified by the last (awk) step in the pipe ...
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The GNU date command in full of goodies but not when it comes to calculate a date or time difference. Here is what I came up with after looking to more than one solution.
Code should be self explaining.
#!/bin/bash
date2stamp () {
date --utc --date "$1" +%s
}
stamp2date (){
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There is a closed Thread: <url>Here will be the url to the original post once I have 5 posts in this forum...</url>
But a small bug had found his way into this very cool and simple code.
#!/bin/bash date2stamp () { date --utc --date "$1" +%s } stamp2date (){ date --utc --date... (2 Replies)
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i have file 1.txt
asdas|csada|13|03|10|04|23|A1|canberra
sdasd|sfdsf|13|04|26|23|28|A1|sydney
i want to add today's date and time in the end of each row
expected output
asdas|csada|13|03|10|04|23|A1|canberra|130430|1358
sdasd|sfdsf|13|04|26|23|28|A1|sydney|130430|1358
todays date... (10 Replies)
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Dear all,
I am kindly seeking assistance on the following issue.
I am working with data that is sampled every 0.05 hours (that is 3 minutes intervals) here is a sample data from the file
5.00000 15.5030
5.05000 15.6680
5.10000 16.0100
5.15000 16.3450
5.20000 16.7120
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LEARN ABOUT OPENDARWIN
pipe
PIPE(2) BSD System Calls Manual PIPE(2)
NAME
pipe -- create descriptor pair for interprocess communication
SYNOPSIS
#include <unistd.h>
int
pipe(int *fildes);
DESCRIPTION
The pipe() function creates a pipe, which is an object allowing unidirectional data flow, and allocates a pair of file descriptors. The
first descriptor connects to the read end of the pipe, and the second connects to the write end, so that data written to fildes[1] appears on
(i.e., can be read from) fildes[0]. This allows the output of one program to be sent to another program: the source's standard output is set
up to be the write end of the pipe, and the sink's standard input is set up to be the read end of the pipe. The pipe itself persists until
all its associated descriptors are closed.
A pipe whose read or write end has been closed is considered widowed. Writing on such a pipe causes the writing process to receive a SIGPIPE
signal. Widowing a pipe is the only way to deliver end-of-file to a reader: after the reader consumes any buffered data, reading a widowed
pipe returns a zero count.
RETURN VALUES
On successful creation of the pipe, zero is returned. Otherwise, a value of -1 is returned and the variable errno set to indicate the error.
ERRORS
The pipe() call will fail if:
[EMFILE] Too many descriptors are active.
[ENFILE] The system file table is full.
[EFAULT] The fildes buffer is in an invalid area of the process's address space.
SEE ALSO
sh(1), read(2), write(2), fork(2), socketpair(2)
HISTORY
A pipe() function call appeared in Version 6 AT&T UNIX.
4th Berkeley Distribution June 4, 1993 4th Berkeley Distribution