09-17-2008
9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi Experts...
I want to calculate the time difference between two date-time values (using ksh). It can return the difference in hours (or whatever..)
For eg: time_diff "09/12/2009 12:30" "09/10/2009 12:30" should return 1464 hours...
$time_diff "09/12/2009 12:30:00" "09/10/2009... (5 Replies)
Discussion started by: PRKS
5 Replies
2. Shell Programming and Scripting
Hello All,
I have a problem calculating the time difference between start and end timings...!
the timings are given by 24hr format..
Start Date : 08/05/10 12:55
End Date : 08/09/10 06:50
above values are in mm/dd/yy hh:mm format.
Now the thing is, 7th(08/07/10) and... (16 Replies)
Discussion started by: smarty86
16 Replies
3. UNIX for Dummies Questions & Answers
Hi,
Please help me, how to get all the direcotries, its sub directories and its sub directories recursively, need to exclude all the files in the process.
I wanted to disply using a unix command all the directories recursively excluding files.
I tried 'ls -FR' but that display files as... (3 Replies)
Discussion started by: pointers
3 Replies
4. Shell Programming and Scripting
Hello all!
I'm looking to list directories and sub-directories of a path, on this forum I found this command:
find $path -type d -exec ls -ld {} \;
The issue I have is that with a simple ls, the list is listed by name, and using -t I get it by time.
How could I list directories and sub... (5 Replies)
Discussion started by: nomadvisuals
5 Replies
5. UNIX for Advanced & Expert Users
A report needs to come some what similar to this
No of elements Stream Batch No Load time
A B C D
A,B,C im able to get quite easily
wc -l /usr/local/intranet/areas/prod/output/SRGW_0?/*/MESSAGE_T.dat
O/P of above command.
A B C ... (1 Reply)
Discussion started by: peckenson
1 Replies
6. Shell Programming and Scripting
Hi Friends,
I have 2 varaibles which contain
START=`date '+ %m/%d/%y %H:%M:%S'`
END=`date '+ %m/%d/%y %H:%M:%S'`
i want the time difference between the two variables in Seconds.
Plz help. (2 Replies)
Discussion started by: i150371485
2 Replies
7. Shell Programming and Scripting
Can anyone come up with a unix command that lists
all the files, directories and sub-directories in the current directory
except a folder called log.?
Thank you in advance. (7 Replies)
Discussion started by: Manjunath B
7 Replies
8. Red Hat
My query please:
What I saw how access times of a file and directories work.
1) For a file the access time is the time when I 1st access it after last modification of the file, i.e., if the file is modified at 10 AM and then I access it at 11 AM. After than whenever I access without... (7 Replies)
Discussion started by: ravisingh
7 Replies
9. Shell Programming and Scripting
how can i move "dataName".sql.gz into a folder called 'database' and then move "$fileName".tar.gz * .htaccess into a folder called 'www' with the entire gzipped file being "$fileName".tar.gz? Is this doable or overly complex.
so
mydemo--2015-03-23-1500.tar.gz
> database
-... (5 Replies)
Discussion started by: wyclef
5 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)
NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)