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Top Forums Shell Programming and Scripting Reading Hours and Minutes from file and comparing with current Post 302298445 by SGD on Tuesday 17th of March 2009 01:54:59 PM
Old 03-17-2009
Reading Hours and Minutes from file and comparing with current

Hi,

Time till when the application should run is indicated in a file. First line is hour and second line is minute.
file:
10
55
Means my application should run till 10:55.

Now in a shell script, i am trying to make that logic but with no luck.

min=`tail -n 1 /file_with_time`
hour=`head -n 1 /file_with_time`

chour=`date +%H`
cmin=`date +%M`

if [ $chour < $hour ] <== Shell script throws error here when value is two digits ie if first line the file is > 9.
then
run_my_app
fi

if [ $chour = $hour ]
then if [ $cmin < $min ]
then
run_my_app
fi
fi

Kindly suggest.
SDG
 

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HYLAFAX-SHUTDOWN(5)						File Formats Manual					       HYLAFAX-SHUTDOWN(5)

NAME
etc/shutdown - server shutdown control file DESCRIPTION
If the file etc/shutdown is present it describes when a HylaFAX server is to be shutdown and may contain a descriptive message to return to clients explaining the reason for the shutdown. This file is used by the hfaxd(8) program. The file has the following format: <year> <month> <day> <hour> <minute> <deny> <disconnect> <shutdown message text> The first line defines the date and time the server should be shutdown and the time preceding at which unprivileged clients should be denied service or disconnected; these fields are described in more detail below. Any lines that follow the first are taken as the text of a message to return to clients when notifying them of a scheduled shutdown or when denying them service. <year> The decimal year; e.g. 1996. <month> The decimal month; e.g. 10 for October. <day> The decimal day of the month in the range [1..31]. <hour> The decimal hour since midnight; in the range [0..23]. <minute> The decimal minute after the hour; in the range [0..59]. <deny> The time prior to the shutdown time at which to deny service to unprivileged clients. This value is specified as decimal number in the form HHMM; e.g. 130 for 1 hour and 30 minutes. <disconnect> Time time prior to the shutdown time at which to disconnect unprivileged clients that are logged in to the server. This value is specified as a decimal number in the form HHMM. NOTES
This file is typically created using the ``SHUT'' command supported by hfaxd(8). SEE ALSO
hfaxd(8), hylafax-server(5) January 18, 1996 HYLAFAX-SHUTDOWN(5)
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