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Full Discussion: Grep the last line and put on mail subject
Top Forums Shell Programming and Scripting Grep the last line and put on mail subject Post 302776735 by Yoda on Wednesday 6th of March 2013 06:16:43 PM
Old 03-06-2013
You can use printf to format the number to 2 decimal places and include thousand separators:
Code:
USED_DB=$( printf "%'.2f" $USED_DB )
USED_PC=$( printf "%'.2f" $USED_PC )

---------- Post updated at 17:16 ---------- Previous update was at 17:13 ----------

From printf manual:
Code:
A block size specification preceded by `'' causes output sizes to be
displayed with thousands separators.  The `LC_NUMERIC' locale specifies
the thousands separator and grouping.  For example, in an American
English locale, `--block-size="'1kB"' would cause a size of 1234000
bytes to be displayed as `1,234'.  In the default C locale, there is no
thousands separator so a leading `'' has no effect.

 

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LEARN ABOUT DEBIAN

std::numpunct_byname

std::numpunct_byname< _CharT >(3cxx)									      std::numpunct_byname< _CharT >(3cxx)

NAME

       std::numpunct_byname< _CharT > -

SYNOPSIS

       Inherits std::numpunct< _CharT >.

   Public Types
       typedef __numpunct_cache< _CharT > __cache_type
       typedef _CharT char_type
       typedef basic_string< _CharT > string_type

   Public Member Functions
       numpunct_byname (const char *__s, size_t __refs=0)
       char_type decimal_point () const
       string_type falsename () const
       string grouping () const
       char_type thousands_sep () const
       string_type truename () const

   Static Public Attributes
       static locale::id id

   Protected Member Functions
       void _M_initialize_numpunct (__c_locale __cloc=0)
       template<> void _M_initialize_numpunct (__c_locale __cloc)
       template<> void _M_initialize_numpunct (__c_locale __cloc)
       virtual char_type do_decimal_point () const
       virtual string_type do_falsename () const
       virtual string do_grouping () const
       virtual char_type do_thousands_sep () const
       virtual string_type do_truename () const

   Static Protected Member Functions
       static __c_locale _S_clone_c_locale (__c_locale &__cloc)  throw ()
       static void _S_create_c_locale (__c_locale &__cloc, const char *__s, __c_locale __old=0)
       static void _S_destroy_c_locale (__c_locale &__cloc)
       static __c_locale _S_get_c_locale ()
       static const char * _S_get_c_name ()  throw ()
       static __c_locale _S_lc_ctype_c_locale (__c_locale __cloc, const char *__s)

   Protected Attributes
       __cache_type * _M_data

Detailed Description
   template<typename _CharT>class std::numpunct_byname< _CharT >
       class numpunct_byname [22.2.3.2].

       Definition at line 1875 of file locale_facets.h.

Member Function Documentation
   template<typename _CharT > char_type std::numpunct< _CharT >::decimal_point () const [inline],  [inherited]
       Return decimal point character. This function returns a char_type to use as a decimal point. It does so by returning returning
       numpunct<char_type>::do_decimal_point().

       Returns:
	   char_type representing a decimal point.

       Definition at line 1708 of file locale_facets.h.

   template<typename _CharT > virtual char_type std::numpunct< _CharT >::do_decimal_point () const [inline],  [protected],  [virtual],
       [inherited]
       Return decimal point character. Returns a char_type to use as a decimal point. This function is a hook for derived classes to change the
       value returned.

       Returns:
	   char_type representing a decimal point.

       Definition at line 1795 of file locale_facets.h.

   template<typename _CharT > virtual string_type std::numpunct< _CharT >::do_falsename () const [inline],  [protected],  [virtual],  [inherited]
       Return string representation of bool false. Returns a string_type containing the text representation for false bool variables. This
       function is a hook for derived classes to change the value returned.

       Returns:
	   string_type representing printed form of false.

       Definition at line 1846 of file locale_facets.h.

   template<typename _CharT > virtual string std::numpunct< _CharT >::do_grouping () const [inline],  [protected],  [virtual],	[inherited]
       Return grouping specification. Returns a string representing groupings for the integer part of a number. This function is a hook for
       derived classes to change the value returned.

       See Also:
	   grouping() for details.

       Returns:
	   String representing grouping specification.

       Definition at line 1820 of file locale_facets.h.

   template<typename _CharT > virtual char_type std::numpunct< _CharT >::do_thousands_sep () const [inline],  [protected],  [virtual],
       [inherited]
       Return thousands separator character. Returns a char_type to use as a thousands separator. This function is a hook for derived classes to
       change the value returned.

       Returns:
	   char_type representing a thousands separator.

       Definition at line 1807 of file locale_facets.h.

   template<typename _CharT > virtual string_type std::numpunct< _CharT >::do_truename () const [inline],  [protected],  [virtual],  [inherited]
       Return string representation of bool true. Returns a string_type containing the text representation for true bool variables. This function
       is a hook for derived classes to change the value returned.

       Returns:
	   string_type representing printed form of true.

       Definition at line 1833 of file locale_facets.h.

   template<typename _CharT > string_type std::numpunct< _CharT >::falsename () const [inline],  [inherited]
       Return string representation of bool false. This function returns a string_type containing the text representation for false bool
       variables. It does so by calling numpunct<char_type>::do_falsename().

       Returns:
	   string_type representing printed form of false.

       Definition at line 1778 of file locale_facets.h.

   template<typename _CharT > string std::numpunct< _CharT >::grouping () const [inline],  [inherited]
       Return grouping specification. This function returns a string representing groupings for the integer part of a number. Groupings indicate
       where thousands separators should be inserted in the integer part of a number.

       Each char in the return string is interpret as an integer rather than a character. These numbers represent the number of digits in a group.
       The first char in the string represents the number of digits in the least significant group. If a char is negative, it indicates an
       unlimited number of digits for the group. If more chars from the string are required to group a number, the last char is used repeatedly.

       For example, if the grouping() returns '0302' and is applied to the number 123456789, this corresponds to 12,34,56,789. Note that if
       the string was '32', this would put more than 50 digits into the least significant group if the character set is ASCII.

       The string is returned by calling numpunct<char_type>::do_grouping().

       Returns:
	   string representing grouping specification.

       Definition at line 1752 of file locale_facets.h.

   template<typename _CharT > char_type std::numpunct< _CharT >::thousands_sep () const [inline],  [inherited]
       Return thousands separator character. This function returns a char_type to use as a thousands separator. It does so by returning returning
       numpunct<char_type>::do_thousands_sep().

       Returns:
	   char_type representing a thousands separator.

       Definition at line 1721 of file locale_facets.h.

   template<typename _CharT > string_type std::numpunct< _CharT >::truename () const [inline],	[inherited]
       Return string representation of bool true. This function returns a string_type containing the text representation for true bool variables.
       It does so by calling numpunct<char_type>::do_truename().

       Returns:
	   string_type representing printed form of true.

       Definition at line 1765 of file locale_facets.h.

Member Data Documentation
   template<typename _CharT > locale::id std::numpunct< _CharT >::id [static],	[inherited]
       Numpunct facet id.

       Definition at line 1658 of file locale_facets.h.

Author
       Generated automatically by Doxygen for libstdc++ from the source code.

libstdc++							  Tue Nov 27 2012			      std::numpunct_byname< _CharT >(3cxx)
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