at reminder script Post: 302561633

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Homework and Emergencies Homework & Coursework Questions at reminder script Post 302561633 by Corona688 on Tuesday 4th of October 2011 04:23:26 PM

10-04-2011

Registered User

"$" variables are likely being substituted before the script is run, so $inputline never changes. You have to escape it with \.

This !! business is strange as well. On my system, that tells it to end the here document on 'man write', since that's the command I ran last.

Code:

at -k $TIME <<EOF
who | cut -c1-20 | grep $LOGNAME | cut -c12-20 | cat > ~/tmp
while read inputline
do
        write $LOGNAME \$inputline < ~/Msgs/message.$$ #|| mail \$inputline < ~/Msgs/message.$$
done < ~/tmp
rm -r ~/Msgs
rm -r ~/tmp
exit 0
EOF

That's a useless use of cat, by the way. Any command can be redirected to file, not just cat -- so leave off the cat and send your last cut into a file, cut -c12-20 > ~/tmp

That's also a useless use of a temp file. You can just feed cut's output directly into the while loop with no intervening file: a | b | c | while read LINE ; do stuff ; done

You never did redirect write's stderr to >dev/null like write ... 2>/dev/null to throw away the messages.

Show me what your who output looks like, and I'll find a more elegant way to get what you want than cut | grep | cut | cat, too.

Corona688

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std::hash

std::hash< _Tp >(3cxx)													    std::hash< _Tp >(3cxx)

NAME

       std::hash< _Tp > -

SYNOPSIS

       Inherits std::__hash_base< _Result, _Arg >.

   Public Types
       typedef _Arg argument_type
       typedef _Result result_type

   Public Member Functions
       size_t operator() (_Tp __val) const
       template<> size_t operator() (bool __val) const
       template<> size_t operator() (char __val) const
       template<> size_t operator() (signed char __val) const
       template<> size_t operator() (unsigned char __val) const
       template<> size_t operator() (wchar_t __val) const
       template<> size_t operator() (char16_t __val) const
       template<> size_t operator() (char32_t __val) const
       template<> size_t operator() (short __val) const
       template<> size_t operator() (int __val) const
       template<> size_t operator() (long __val) const
       template<> size_t operator() (long long __val) const
       template<> size_t operator() (unsigned short __val) const
       template<> size_t operator() (unsigned int __val) const
       template<> size_t operator() (unsigned long __val) const
       template<> size_t operator() (unsigned long long __val) const
       template<> size_t operator() (float __val) const
       template<> size_t operator() (double __val) const
       template<> size_t operator() (long double __val) const

Detailed Description
   template<typename _Tp>struct std::hash< _Tp >
       Primary class template hash.

       Definition at line 58 of file functional_hash.h.

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

libstdc++							  Tue Nov 27 2012					    std::hash< _Tp >(3cxx)