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Dd/mm/yy or dd/mm/yyyy to UNIX epoch

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Top Forums Shell Programming and Scripting Dd/mm/yy or dd/mm/yyyy to UNIX epoch
# 15  
Old 03-27-2013
Quote:
Originally Posted by franzpizzo
@vipin kumar
You're saying that


Code:
FILE=mynewfile.txt
touch $FILE
if [[ ! -f $FILE ]]
then
echo $FILE not exists
else
N=$(find . ! -name . -prune -name $FILE -mtime +2|wc -l)
if [[ $N -eq 0 ]]
then
echo $FILE is updated
else
echo $FILE is older
fi
fi

and the result is?
Code:
mynewfile.txt not exists

It's strange... check your procedure


@franzpizzo

hey, that script worked perfectly fine...plz ignore my previous msg.
Thanks a ton.
Need one more favour.. can u plz explain me that what does this line is doing ,it wud be good if u can explain in detail.
N=$(find . ! -name . -prune -name $FILE -mtime +2|wc -l).

Thanks.
# 16  
Old 03-27-2013
The command
Code:
find . ! -name . -prune -name $FILE -mtime +2

search in the current directory (the first parameter "." ) and not in the subdir (the second block of parameters "! -name . -prune") a file named $FILE ("-name $FILE") older than 2 days (-mtime +2)

Good coding
# 17  
Old 03-27-2013
Quote:
Originally Posted by franzpizzo
The command
Code:
find . ! -name . -prune -name $FILE -mtime +2

search in the current directory (the first parameter "." ) and not in the subdir (the second block of parameters "! -name . -prune") a file named $FILE ("-name $FILE") older than 2 days (-mtime +2)

Good coding

and why we are using wc -l in the end. is it really necessary...
# 18  
Old 03-27-2013
The wc -l counts the number of lines returned by the find command - i.e. how many files it found. The script logic uses this value (if it finds zero files, then it was updated less than 2 days ago), so yes, you need it.

EDIT: Normally you could just check the return status of the command, but (iirc) find will only return failure if it can't parse its parameters or it can't locate the path you specified.
# 19  
Old 03-27-2013
Quote:
Originally Posted by CarloM
The wc -l counts the number of lines returned by the find command - i.e. how many files it found. The script logic uses this value, so yes, you need it.

EDIT: Normally you could just check the return status of the command, but (iirc) find will only return failure if it can't parse its parameters or it can't locate the path you specified.

great...thanx...
bro..i have one more issue..what if i want to pass file name as command line argument..in that case i shud remove wc -l or is there sm thing else...jus last favourSmilie

thankxxx
# 20  
Old 03-27-2013
If you still have gnudate on your system it offers the -r option:

Code:
$ date -r myfile.txt +%s
1364355039

To test if file exists and is younger than two days you could use:

Code:
FILE="$1"

if [ -n "$(find "$FILE" -mtime -2)" ]
then
    echo file is young
else
    echo file does not exist or is old
fi
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