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Top Forums UNIX for Beginners Questions & Answers How to run a shell script in background without showing in the terminal? Post 302986410 by Meeran Rizvi on Friday 25th of November 2016 02:05:53 AM
Old 11-25-2016
Linux How to run a shell script in background without showing in the terminal?

Hi Guys,
i am having a script which checks for ip address is pingable or not,when i execute this script in terminal it keeps on showing the pinging status of every ip address and it takes more time when i check for 100 ip address,How to do run a script in background without showing in the terminal & how to speed up the process?.One thing is i have to give the input in the terminal only.

#here is my pingscript
Code:
echo "Enter the initial ip:"
read inip
echo "Enter the end ip:"
read endip
a=$(echo $inip | awk -F. '{print $4}')
b=$(echo $endip | awk -F. '{print $4}')
c=$(echo $inip | head -c10)

pingfunc ()
{
for (( i=$a; i<=$b; i++ ))
do 
if ping -c 4 $c$i
then
echo "pingable"
else
echo "not pingable"
fi
done
}
pingfunc
echo "Done"

 

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script(1)						      General Commands Manual							 script(1)

NAME
script - Makes a transcript of terminal session SYNOPSIS
script [-a] [file] The script command makes a transcript of everything printed on your terminal. OPTIONS
Appends the transcript to file rather than writing it to file. OPERANDS
The name of an output file that will contain the transcript of the session. If this parameter is omitted, the file typescript is written. DESCRIPTION
The transcript is written to file, or appended to file if the -a option is given. If no file name is given, the transcript is saved in the file typescript. The script ends when the forked shell exits. This program is useful when you are using a CRT and want a hard-copy record of the dialog (for example, a technical writer might create an example of a working session this way). If you specify the -a option and the file does not exist, it is created. If you do not specify the -a option and the file exists, it is replaced. RESTRICTIONS
The script command requires a streams based terminal. In single user mode, streams may not be enabled. Under these circumstances, script will exit with no action. If you are the superuser and need to run this command in single user mode, use the following special instruc- tions. Enabling Streams If it is necessary to enable a streams environment in the single user mode, enter the command /sbin/init.d/streams. This command is avail- able to the superuser only. SEE ALSO
Commands: autopush(8), cat(1), echo(1), strsetup(8), tee(1) System Administration script(1)
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