dfspace-ez-arch.sh

#!/bin/sh
#-------------------------------------------------------------------------------
#Created by Vincent mailto: ezarchproject[at]gmail[dot]com
# This was inspired by the dfspace that was found on the net
# and is rewritten.
#-------------------------------------------------------------------------------
#This program is free software: you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation, either version 3 of the License, or
#(at your option) any later version.
#
#This program is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General Public License for more details.
#
#You should have received a copy of the GNU General Public License
#along with this program.  If not, see <http://www.gnu.org/licenses/>.
#-------------------------------------------------------------------------------
# Explaination of the Script:
#
# This script is designed for GNU/Linux as this came from another script
# found on the internet. The idea of this came from UNIX dfspace which was
# on various commercial UNIX systems including AT&T and SCO.
#


OS=`uname`

#Program Locations

df=${DF:-'/bin/df'}
AWK=/usr/bin/awk

# Options to DF

DF_FS_OPTS="-t ext2 -t ext3 -t ext4" # Default Filesystems
DF_XTRA_OPTS="-P"  # Additional Opts -P is posix

TOTAL_OPTS="-k $DF_FS_OPTS $DF_XTRA_OPTS"
echo
$df -k $TOTAL_OPTS | $AWK -v os=$OS '

# Calculations
BEGIN {
printf("-------------------------------------------\n ****** Space on the filesystems ***** \n-------------------------------------------\n\n")
Blksize=1024;
Mbyte = 1024 * 1024;
MbyteBlocks = Blksize / Mbyte;
Gbyte = Mbyte * 1024;
GbyteBlocks = Blksize / Gbyte;
Tbyte = Gbyte * 1024;
TbyteBlocks = Blksize / Tbyte;
totalFilesystems = 0;
}
NR == 1 {}
NR > 1 {
fileSystem=$NF;
free=$4;
alloc=$2;
split($2,allocptr," "); alloc = allocptr[1]+0
if (fileSystem !~ /^\/proc/ && fileSystem !~ /^\/dev\/fd/)
{
totalFilesystems++;
if (alloc == 0) alloc = 1; # avoid division by zero
# In all cases, the "- 0.005" forces rounding down.
if ((free * TbyteBlocks) >= 1)
{
totalFree = (free * TbyteBlocks) - 0.005;
totalFreeLabel = "TB";
}
else if ((free * GbyteBlocks) >= 1)
{
totalFree = (free * GbyteBlocks) - 0.005;
totalFreeLabel = "GB";
}
else
{
totalFree = (free * MbyteBlocks) - 0.005;
totalFreeLabel = "MB";
}
if ((alloc * TbyteBlocks) >= 1)
{
totalAlloc = (alloc * TbyteBlocks) - 0.005;
totalAllocLabel = "TB";
}
else if ((alloc * GbyteBlocks) >= 1)
{
totalAlloc = (alloc * GbyteBlocks) - 0.005;
totalAllocLabel = "GB";
}
else
{
totalAlloc = (alloc * MbyteBlocks) - 0.005;
totalAllocLabel = "MB";
}
percentFree = free * 100 / alloc
if (totalFree < 0) totalFree=0
if (totalAlloc < 0) totalAlloc=0

if (len (fileSystem > 16))
fileSystem = substr (fileSystem, 1, 16);
printf ("%-20s Disk space: %#9.2f %s of %#9.2f %s available (%#5.2f%%)\n", fileSystem, totalFree, totalFreeLabel, totalAlloc, totalAllocLabel, percentFree)
Cumfree += free;
Cumalloc += alloc;
}
}
END {
if ((Cumalloc > 0) && (totalFilesystems > 1))
{
CumPct=Cumfree * 100 / Cumalloc
if ((Cumfree * TbyteBlocks) >= 1)
{
totalFree = (Cumfree * TbyteBlocks) - 0.005;
totalFreeLabel = "TB";
}
else if ((Cumfree * GbyteBlocks) >= 1)
{
totalFree = (Cumfree * GbyteBlocks) - 0.005;
totalFreeLabel = "GB";
}
else
{
totalFree = (Cumfree * MbyteBlocks) - 0.005;
totalFreeLabel = "MB";
}
if ((Cumalloc * TbyteBlocks) >= 1)
{
totalAlloc = (Cumalloc * TbyteBlocks) - 0.005;
totalAllocLabel = "TB";
}
else if ((Cumalloc * GbyteBlocks) >= 1)
{
totalAlloc = (Cumalloc * GbyteBlocks) - 0.005;
totalAllocLabel = "GB";
}
else
{
totalAlloc = (Cumalloc * MbyteBlocks) - 0.005;
totalAllocLabel = "MB";
}
printf ("\n%10s:%14s%#9.2f %s of %#9.2f %s available (%#5.2f%%)\n\n", "Overall Disk Space", " ", totalFree, totalFreeLabel, totalAlloc, totalAllocLabel, CumPct)
}
}'
echo