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How do l test for carriage return & Disk space usage

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# 1  
Old 06-28-2005
How do l test for carriage return & Disk space usage
Hi,

I have just written a script in /bin/bash, however, l want to test if character is a carriage return or space. Also l want my script to be able to detect my disk space and send a mail if usage is more than 90% or send an alert.

Thanks

Kayode
# 2  
Old 06-28-2005
bdf or df du give information about disk usage.
For example:
Code:
 bdf . | awk '{ if(NR==2){print $5}}'

gives you the % free on the current disk.

'\015' is octal for ASCII 13 - carriage return.
You can use:
Code:
expr index $VAR '\015'

to get the position of a carriage return (0=none found) in the variable VAR.
# 3  
Old 06-29-2005
Disk Space Usage
I use this:
UsedSpace=`df -k . | awk '{print $5 }'| tail -1 | cut -d"%" -f1`

if [$UsedSpace -ge 90 ]
select the files that you want to remove
rm -f selected files
fi
# 4  
Old 07-01-2005
Thanx these scripts did work perfectly.
# 5  
Old 07-12-2005
How do you check all file system's disk usage and email threshold over 95%
I need 2 scripts that will e-mail me if thressholds are exceeded.

One is for disk usage and one is for cpu usage. I got the df -k . one to work obviously for the file system I was in, but I'd like a command that would go through all of the file systems on all my servers and report back without having to hard-code the file systems.

Renae
# 6  
Old 07-12-2005
Just capture the output of df -k (on Sun and Linux) or bdf (on HP) and carry out the check for each filesystem. A 'while do .. done' loop will do the job.
# 7  
Old 07-14-2005
Quote:
Originally Posted by jim mcnamara
Code:
 bdf . | awk '{ if(NR==2){print $5}}'

Code:
 bdf . | awk 'NR==2{print $5}'

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