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Top Forums Shell Programming and Scripting Run a script before and after reboot automatically and send output to two locations. Post 303034993 by Varja on Friday 10th of May 2019 12:42:00 PM
Old 05-10-2019
Run a script before and after reboot automatically and send output to two locations.

Hello Team .

I am working a health check script ( bash) to run on linux server ( RedHat) and requirements are
1. The o/p of script need to be send to two diff files . I am testing with tee command . But I am not successful yet , any recommendations if that is the right approach ?
2. The same script need to run by itself just before power off and right after power on . If I keep the script under /etc/init.d , it will run right after power on OR to set up a cron with @reboot . But what I am looking is if I can have a logic in script which need to identify whether the state of the server is power off or on , If so send the output from one of the o/p files generated(from #1) .

Hope it makes sense.

Last edited by Varja; 05-10-2019 at 08:05 PM..
 

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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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