the nice command

[sde]

# nice shellscript.sh

nice is used to modify the priority in which your script runs. negative values are greater priority, and positive values are lower priority.

i'm wondering what the default priority is if i just execute the command above with no number.

next question:

let's say this shell script has things like mysqldump or other commands in it, .. is every process that this shell script executes going to be run with the modified priorities as well?

[redhead]

default value is 10, there are something with shell-scripts not accepting nice within... but shellscripts run with the nice command will let every command performed by the shell-script beeing handled by nice, nice +10, for a nicer nice value than default 10
else ~> info coreutils nice

[sde]

there are something with shell-scripts not accepting nice within... but shellscripts run with the nice command will let every command performed by the shell-script beeing handled by nice

so most of the time it will run the nice command within the script?

thanks for the info. this is what i needed to know =)

[redhead]

The thing is, that some scripting environment provides their own enterpritation of the key "nice" so if you have your script ie:

#!/bin/sh
nice my_command
nice -n 12 my_other_command

you can't be sure the two commands will be run with the available nice program provided by the system because the scripting-shell in question might enterpret the word nice differently than just running the nice command.
But if you have something like:

!#/bin/sh
my_command
my_other_command

and run it with:
~ > nice my_script.sh
It will be sure to run my_command and my_other_command with the nice value the nice execution of the script is told.

[sde]

great thanks a lot. i'm gonna use it on my backup scripts to they don't bog down the server.