Shell Programming and Scripting

Hi Everyone
i have a perl file below, one of the line is convert the pcho time to human readable format.

Code:

$value=`awk 'BEGIN{print strftime("%c",1273236600)}' | tr -d '\n'`;

if image, if i have lots of pcho time value in a file, if i use this awk, strftime, then tr -d to remove the \n, then assign it to the variable, this process is very slow.

any way to improve it? like perl has built in function, instead of `` the awk.

Thanks

If you are looking for the equivalent of this -

Code:

awk 'BEGIN{print strftime("%c",1273236600)}'

in Perl, then you may want to use the "POSIX" module, which includes the strftime function -

Code:

perl -MPOSIX -le 'print POSIX::strftime("%c", localtime 1273236600)'

The POSIX module is part of Perl's standard distribution, atleast on *nix systems. Otherwise CPAN is your one-stop shop.

tyler_durden

for awk, use printf, instead of awk|tr, for my file with 35k lines, it saves me around 12 seconds.

use POSIX instead of awk, it saves me around 2 mins and 30 secs (2.30mins)

so you can image, each line in that file, has many many time conversation, plus lots lots lines, it really saves lots of time.

Thank tyler