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how to check disk space

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Top Forums Shell Programming and Scripting how to check disk space
# 8  
Old 08-24-2010
OK, final solution:
Code:
df -k | awk ' { p=substr($5,1,index($5,"%")-1); if(p+0>=50) print "NOT OK"; else print "OK" }'



---------- Post updated at 09:24 AM ---------- Previous update was at 09:21 AM ----------

If you want to test equality of numbers in shell, you can use:
Code:
if [ "$d" -eq "50" ]

"if [ "$d" == "50" ]" is for testing equality of strings.
# 9  
Old 08-24-2010
Thanks kevin... its working yar..... thank u so much.. but its showing like this..

Code:
bash-3.00$ df -k | awk ' { p=substr($5,1,index($5,"%")-1); if(p+0>=50) print "NOT OK"; else print "OK" }'
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
NOT OK
NOT OK
OK
NOT OK


because its checking all colums ..
Code:
bash-3.00$ df -k
Filesystem            kbytes    used   avail capacity  Mounted on
/dev/dsk/c0t0d0s0    20171281 2580778 17388791    13%    /
/devices                   0       0       0     0%    /devices
ctfs                       0       0       0     0%    /system/contract
proc                       0       0       0     0%    /proc
mnttab                     0       0       0     0%    /etc/mnttab
swap                 11135968    1520 11134448     1%    /etc/svc/volatile
objfs                      0       0       0     0%    /system/object
sharefs                    0       0       0     0%    /etc/dfs/sharetab
/dev/dsk/c0t0d0s1    30254974 3235704 26716721    11%    /usr
/platform/SUNW,Sun-Fire-T200/lib/libc_psr/libc_psr_hwcap1.so.1
                     20171281 2580778 17388791    13%    /platform/sun4v/lib/libc_psr.so.1
/platform/SUNW,Sun-Fire-T200/lib/sparcv9/libc_psr/libc_psr_hwcap1.so.1
                     20171281 2580778 17388791    13%    /platform/sun4v/lib/sparcv9/libc_psr.so.1
fd                         0       0       0     0%    /dev/fd
/dev/dsk/c0t0d0s2    10085260 1686141 8298267    17%    /var
/dev/dsk/c0t2d0s0    10085260 2073979 7910429    21%    /tmp
swap                 11134496      48 11134448     1%    /var/run
/dev/dsk/c0t2d0s2    20171281  555909 19413660     3%    /opt
/dev/dsk/c0t2d0s5    9846556 2804805 6943286    29%    /backup
/dev/dsk/c0t0d0s4    70359009 55329888 14325531    80%    /oracle
/dev/dsk/c0t2d0s1    5043342 3772847 1220062    76%    /export/home
/dev/dsk/c0t2d0s4    30254974  628971 29323454     3%    /opt/ulcm
/dev/dsk/c0t2d0s3    65553610 55899965 8998109    87%    /opt/product



could u make it .. total output? if anyone is not oki.. i want to print NOT OK.
# 10  
Old 08-24-2010
So you want to know which partition is "NOT OK", right?
Code:
df -k | awk ' { p=substr($5,1,index($5,"%")-1); if(p+0>=50) print $NF " is NOT OK, over " p "% of its available space is used."; else print $NF " is OK." }'

# 11  
Old 08-24-2010
Thanks kevin...

i want to print only NOT OK partition like below

ex:
/oracle is NOT OK, over 80% of its available space is used.
/export/home is NOT OK, over 76% of its available space is used.
/opt/product is NOT OK, over 87% of its available space is used

thank you so much...
# 12  
Old 08-24-2010
Then remove the "else print ..." part from the code.
# 13  
Old 08-24-2010
There are at least two errors with your script.

1. The if-line compares with exactly 50. But if your disk is 51%, it will not discover that.

2. Your df-command line will display several lines, if several disks are above 50%, and then your script will not work
# 14  
Old 08-24-2010
Hi, markkusi

For doubt 1, I don't quite understand what you mean. In my script I stripped "%" for the 5th column, and compare the number I get with 50, equals to or above it, it just works like a charm. why don't you think it would discovery that if the disk is used 51%?

For doubt 2, I am still confused.

I didn't have a Solaris system to test my script, so I just copied the input sample Steve posted, it all worked before I posted each response.
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