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2013-11-28

how-to get OS independent mounts space usage with Perl

use strict ; use warnings ;
# call:
# perl check-mount-disk-usage.pl | head -n 1
# perl check-mount-disk-usage.pl | sort -k 2rn
use Filesys::DfPortable ;
use Sys::Filesystem ();
 
printf "%-15s %10s %10s %10s %10s %10s \n" , "Mount" , "Usage in %"
, "Used MB" , "Total MB" , "Available MB" , "Free MB" ;
 
my $fs = Sys::Filesystem->new();
my @filesystems = $fs->filesystems();
 
for my $filesystem ( @filesystems ) {
   my $mount = $fs->mount_point($filesystem) ;
   my $ref = dfportable("$mount", (1024*1024)); # Display output in 1K blocks
   if(defined($ref)) {
      printf "%-15s %10d %10d %10d %10d %10d \n" , $mount ,
      $ref->{per} , $ref->{bused} , $ref->{blocks} , $ref->{bavail} , $ref->{bfree} ;
   } #eof if
 } #eof while
 
1 ; 
 
__END__
 
=cut
 Purpose:
 OS independant mount points space usage
 
 Author: ysg
 License: Free BSD
 
 Requirements:
 perl -MCPAN -e "install Filesys::DfPortable"
 perl -MCPAN -e "install Sys::Filesystem"
=pod

2013-11-26

how-to list all the columns in netezza

# list all the db.table.column
for db in `sh nz_get_database_names`; do for table in `sh nz_get_table_names $db`; do for col in `nz_get_column_names $db $table`; do echo $db.$table.$col ; done ; done ; done ;

2013-11-25

how-to build git from source

# http://www.thegeekstuff.com/2011/08/git-install-configure/

#get the latest git from
# https://www.kernel.org/pub/software/scm/git/?C=M;O=D
cd ~
curl -O https://www.kernel.org/pub/software/scm/git/git-1.8.4.4.tar.xz

#unpack it
tar -xovf git-1.8.4.4.tar.xz

#go to the dir
cd git-1.8.4.4

# Action !!!
./configure
make
make install

#where the git binary is
which git

# check the version as well
git --version

#download the man packages
cd /usr/share/man
curl -O https://www.kernel.org/pub/software/scm/git/git-manpages-1.8.4.4.tar.xz
tar -xovf git-manpages-1.8.4.4.tar.xz

# check the man funcionality
man git

2013-11-19

how-to identify your bad IT management

Just look at the Excels they produce ... They are unlogical , unnormalized and overcoloured ...

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