08-02-2010
Hi alobi,
Here is the script -
num=$#
option=$1
typeset -R2 lastday=$(cal)
currdate=`date "+%d"`
days_to_go=`expr $lastday - $currdate`
hrs_gone=`date "+%H"`
mins_gone=`date "+%M"`
secs_gone=`date "+%S"`
secs_gone=`expr $secs_gone + $mins_gone \* 60`
secs_gone=`expr $secs_gone + $hrs_gone \* 60 \* 60`
secs_to_go=`expr $days_to_go \* 24 \* 60 \* 60`
secs_to_go=`expr $secs_to_go - $secs_gone`
if [ $num -gt 0 ]
then
if [ $option == "-s" ]
then
echo "Time left is 0 : 0 : 0 : $secs_to_go"
elif [ $option == "-m" ]
then
secs=`expr $secs_to_go % 60`
mins=`expr $secs_to_go / 60`
echo "Time left is 0 : 0 : $mins : $secs"
elif [ $option == "-h" ]
then
secs=`expr $secs_to_go % 60`
mins=`expr $secs_to_go / 60`
hrs=`expr $mins / 60`
mins=`expr $mins % 60`
echo "Time left is 0 : $hrs : $mins : $secs"
fi
else
secs=`expr $secs_to_go % 60`
mins=`expr $secs_to_go / 60`
hrs=`expr $mins / 60`
mins=`expr $mins % 60`
days=`expr $hrs / 24`
hrs=`expr $hrs % 24`
echo "Time left is $days : $hrs : $mins : $secs"
fi
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test(1) General Commands Manual test(1)
Name
test - test conditional expression
Syntax
test expr
[ expr ]
Description
The command evaluates the expression expr. If the value of expr is true, the command returns a zero exit status; otherwise, it returns a
nonzero exit status. The command also returns a nonzero exit status if no arguments are specified.
Options
The following primitives are used to construct expr:
-r file Tests if the file exists and is readable.
-w file Tests if the file exists and is writable.
-f file Tests if the file exists and is not a directory.
-d file Tests if the file exists and is a directory.
-s file Tests if the file exists and has a size greater than zero.
-t [ fildes ] Tests if the open file, whose file descriptor number is fildes (1 by default), is associated with a terminal device.
-z s1 Tests if the length of string s1 is zero.
-n s1 Tests if the length of the string s1 is nonzero.
s1 = s2 Tests if the strings s1 and s2 are equal.
s1 != s2 Tests if the strings s1 and s2 are not equal.
s1 Tests if s1 is not the null string.
n1 -eq n2 Tests if number1 equals number2.
n1 -ge n2 Tests if number1 is greater than or equal to number2.
n1 -gt n2 Tests if number1 is greater than number2.
n1 -le n2 Tests if number1 is less than or equal to number2.
n1 -lt n2 Tests if number1 is less than number2.
n1 -ne n2 Tests if number1 is not equal to number2.
These primitives can be combined with the following operators:
!expr Negates evaluation of expression.
expr -a expr Tests logical and of two expressions.
expr -o expr Tests logical or of two expressions.
( expr... ) Groups expressions.
The -a operator takes precedence over the -o operator. Note that all the operators and flags are separate arguments to Note also that
parentheses are meaningful to the Shell and must be escaped.
See Also
find(1), sh(1), test(1sh5)
test(1)