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[ask]elimination with diskspace

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# 1  
Old 09-05-2011
[ask]elimination with diskspace
dear all,

i want elimination file with disk space for example:
Code:
[itu@tux ~]$ df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
                       62G   19G   41G  31% /
/dev/sda1              99M   13M   82M  13% /boot
tmpfs                1014M     0 1014M   0% /dev/shm

so if used space in / 20G then will be remove file in /temp/*.txt
how can i do that with bash script

thx for your advice
# 2  
Old 09-05-2011
Just execute the below command and check the output. If you are satisfied with output, then remove the highlighted (red color) echo from the nawk

Code:
 
deleted

Try this...

Code:
 
df-h | nawk ' $NF~/\/$/ { size=int(substr($2,length($2)-2,length($2)-1)); if( size > 20) {print "echo echo rm /tmp/*.txt"} else {print "echo echo Disk usage is under 20"}}' | sh

Last edited by itkamaraj; 09-05-2011 at 02:21 AM..
# 3  
Old 09-05-2011
Code:
df -h /  | tail -n1 | 
awk '+$3 > 20 {system("echo rm")}'

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