06-28-2012
Quote:
Originally Posted by
Corona688
Part of your problem is that date math is a royal pain in Solaris. None of the "easy" ways work. Instead of rewriting huge, ugly, and potentially-buggy scripts from scratch, people will refer you to the better scripts people have already written, which we have in that FAQ.
So you're left with the problem of squishing your data to fit into these scripts. If you'd even had pseudocode people would be much more willing to help you. Just demanding that everyone write everything for you, start-to-finish, isn't just impolite -- it looks suspicious. We get many people trying to trick us into doing their homework for them.
You can't write shell code, fine. That doesn't mean you can't describe how you'd try to solve this problem in general. I'd happily give answers to questions like "How do I read a string from file?", "how do I break a string into parts?", "how do I do arithmetic in shell?", and "how do I put these things together like ...?"
If you read my older post you will find me also participated and involved with what i have been upto ....just read what i have written before just attacking .
---------- Post updated at 06:01 PM ---------- Previous update was at 05:59 PM ----------
Quote:
Originally Posted by
Corona688
You're on Solaris, so you probably don't have GNU date. Try date --version to be sure.
If you don't, you can't feed a date into date and have it print it.
true on solaris...ill try the --date
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LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)
NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$SHELL -c". This doesn't work as intended:
ssh host touch 'hi there' # fails
It creates 2 files, hi and there. Instead, do this:
cmd=`shell-quote touch 'hi there'`
ssh host "$cmd"
This gives you just 1 file, hi there.
process find output
It's not ordinarily possible to process an arbitrary list of files output by find with a shell script. Anything you put in $IFS to
split up the output could legitimately be in a file's name. Here's how you can do it using shell-quote:
eval set -- `find -type f -print0 | xargs -0 shell-quote --`
debug shell scripts
shell-quote is better than echo for debugging shell scripts.
debug() {
[ -z "$debug" ] || shell-quote "debug:" "$@"
}
With echo you can't tell the difference between "debug 'foo bar'" and "debug foo bar", but with shell-quote you can.
save a command for later
shell-quote can be used to build up a shell command to run later. Say you want the user to be able to give you switches for a command
you're going to run. If you don't want the switches to be re-evaluated by the shell (which is usually a good idea, else there are
things the user can't pass through), you can do something like this:
user_switches=
while [ $# != 0 ]
do
case x$1 in
x--pass-through)
[ $# -gt 1 ] || die "need an argument for $1"
user_switches="$user_switches "`shell-quote -- "$2"`
shift;;
# process other switches
esac
shift
done
# later
eval "shell-quote some-command $user_switches my args"
OPTIONS
--debug
Turn debugging on.
--help
Show the usage message and die.
--version
Show the version number and exit.
AVAILABILITY
The code is licensed under the GNU GPL. Check http://www.argon.org/~roderick/ or CPAN for updated versions.
AUTHOR
Roderick Schertler <roderick@argon.org>
perl v5.8.4 2005-05-03 SHELL-QUOTE(1p)