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Top Forums Shell Programming and Scripting How to detect url in use in a script? Post 303027086 by baris35 on Saturday 8th of December 2018 04:08:22 PM
Old 12-08-2018
How to detect url in use in a script?

Hello,
I have a small script and it runs from web application in below format:
Code:
pipe:///path_to_myscript.sh url1 url2 url3

myscript.sh:
Code:
#!/bin/bash
count=0
while [ "$count" -lt "20" ]
do
count=$((count+1))
exec 3>&1
((ffmpeg -i $1 ...... -f mpegts pipe:1 2>/dev/null 1>&3 ) 2>&1 | \
while read LINE; do echo "$1 $LINE"; done 1>&2 ) 3>&1
PID=$!
wait ($PID)
if [ -n "$2" ]; then
((ffmpeg -i $2 ...... -f mpegts pipe:1 2>/dev/null 1>&3 ) 2>&1 | \
while read LINE; do echo "$2 $LINE"; done 1>&2 ) 3>&1
PID=$!
wait ($PID)
fi
if [ -n "$3" ]; then
((ffmpeg -i $3 ..... -f mpegts pipe:1 2>/dev/null 1>&3 ) 2>&1 | \
while read LINE; do echo "$3 $LINE"; done 1>&2 ) 3>&1
PID=$!
wait ($PID)
fi
sleep 1
done

When I run it, url1, or 2 or 3 runs but I am unable to see which one is in use and I do not wish to run iftop to detect. Htop is not giving any clue.
How may I change this script to be able to see the active url?

Thanks in advance
Boris

Last edited by baris35; 12-10-2018 at 05:46 AM.. Reason: latest update
 

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URI::URL(3)						User Contributed Perl Documentation					       URI::URL(3)

NAME
URI::URL - Uniform Resource Locators SYNOPSIS
$u1 = URI::URL->new($str, $base); $u2 = $u1->abs; DESCRIPTION
This module is provided for backwards compatibility with modules that depend on the interface provided by the "URI::URL" class that used to be distributed with the libwww-perl library. The following differences exist compared to the "URI" class interface: o The URI::URL module exports the url() function as an alternate constructor interface. o The constructor takes an optional $base argument. The "URI::URL" class is a subclass of "URI::WithBase". o The URI::URL->newlocal class method is the same as URI::file->new_abs. o URI::URL::strict(1) o $url->print_on method o $url->crack method o $url->full_path: same as ($uri->abs_path || "/") o $url->netloc: same as $uri->authority o $url->epath, $url->equery: same as $uri->path, $uri->query o $url->path and $url->query pass unescaped strings. o $url->path_components: same as $uri->path_segments (if you don't consider path segment parameters) o $url->params and $url->eparams methods o $url->base method. See URI::WithBase. o $url->abs and $url->rel have an optional $base argument. See URI::WithBase. o $url->frag: same as $uri->fragment o $url->keywords: same as $uri->query_keywords o $url->localpath and friends map to $uri->file. o $url->address and $url->encoded822addr: same as $uri->to for mailto URI o $url->groupart method for news URI o $url->article: same as $uri->message SEE ALSO
URI, URI::WithBase COPYRIGHT
Copyright 1998-2000 Gisle Aas. perl v5.18.2 2012-02-11 URI::URL(3)
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