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Roger | 19 Jul 21:35
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bash (or other shell) help with usernames

Trying to do something simple, but it's not working.
Just trying to pass an argument (in this case a username), and have it
touch a file in that user's directory.
calling the script like this:
SCRIPTNAME  USERNAME

#!/bin/bash
touch ~$1/FILENAME

Does not work.  I get no such directory or file.  If I hard code in:
touch  ~USERNAME/FILENAME

Then it works.
If I call it with:
SCRIPTNAME   ~USERNAME    (Note the ~)

There must be something going on with passing in the username via the
command prompt and using that string with tilde expansion.

I'm trying to do something when a user connects to an SMB share on
linux.  I can retrieve the username via $U in the pre-exec area.  I
could add the full path in SMB.conf, but not all users are in the same
path for their home directories.   Using the tilde with their username
is best.

--

-- 
Roger
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dovito | 9 Jun 17:49

Display date between 2 giving date

I have a problem with a PHP script to output date format according to
two dates. $fromDate and $toDate.
Let say if the date between is 6 i wanted to display  day 1 , day 2 ,
day3 .....day6.
I have a script that follows

 <?php
$fromDate = "07/20/2011"; // month / day / year
$toDate = "07/22/2011";  // month / day / year

$dateMonthYearArr = array();
$fromDateSTR = strtotime($fromDate);
$toDateSTR = strtotime($toDate);

for ($currentDateSTR = $fromDateSTR;
$currentDateSTR <= $toDateSTR;
$currentDateSTR += (60 * 60 * 24)) {
// use date() and $currentDateSTR to format the dates in between
$currentDateStr = date("Y-m-d",$currentDateSTR);
$dateMonthYearArr[] = $currentDateStr;
//print $currentDateStr."<br />";
}

echo  "<pre>";
print_r($dateMonthYearArr);
echo "";

?>

the output is:
(Continue reading)

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dovito | 5 Jun 04:21

Php image renaming

I have a script for image upload and rename. Anytime I try to rename a
image with a name contaning an apostrophe I get something wrong. For
Exemple if I want to rename a image from "dream" to "dream's"  I get
an error. Can someone help? Thank you!
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Todd A. Jacobs | 10 Apr 13:26
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Network redirection in bash

I'm trying something a little weird, and am not having much success
with my shell redirection to a network port. I'm trying to send an MS
Word file to antiword running out of inetd. Here's what I have on the
client side:

    exec 4<> /dev/tcp/127.0.0.1/2100
    cat /tmp/foo.doc >&4
    cat <&4

This seems like it should work, but I never get any results back from
antiword. Basically, it just waits until the service times out.

I'm hoping I'm just doing something wrong with my shell redirection
here. Thoughts?
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Todd A. Jacobs | 3 Apr 01:38
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Easier way to toggle comments?

I'm using the following to toggle lines on and off in my Ruby .gemrc
file:

    toggle-rdoc () {
        local FILE="$HOME/.gemrc"
        { rm $FILE &&
          awk '/^#/ {sub(/^#/, "", $0); print; next};
                  /^[^#]/ {sub(/^/, "#", $0); print}' > $FILE
        } < $FILE
        cat $FILE
    }

It works, but it just seems like there ought to be an easier way. I
couldn't get it to work with sed for some reason; it seems to need
some serious branching to work at all in sed. Here's what I tried in
sed:

    alias toggle-rdoc='sed -ri "/^#/{ s/^#// }; s/^([^#])/#\1/"
~/.gemrc; cat ~/.gemrc'

but the results are always the same; no toggling happens at all.
*sigh*

Can anyone think of a more elegant solution for this problem?
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Todd A. Jacobs | 27 Mar 00:31
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tcltest?

Does anyone here know anything about tcltest? I ran across a reference
to it today while trying to find some resources for TDD in tcl/tk. Not
sure if it's suitable, so I thought I'd ask for opinions.

Recommended links for TDD with tcl/tk, anyone?
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Todd A. Jacobs | 24 Mar 12:06
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Script or one-liner for bumping revision numbers?

I was noodling around today about ways to bump an arbitrarily-deep
revision number. By that, I mean a good perl (or whatever) one-liner
that doesn't care if the revision number is 7, 1.1, or 2.3.4, and can
just bump up the last digit in the sequence and write it back in-
place.

I have a complicated shell snippet that sort of works, but it's ugly
and inefficient. Anyone know of a reliable way to do this?
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Todd A. Jacobs | 24 Mar 12:03
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New script up on GitHub: stackmount.sh

In addition to learning about scripting, this groups is also for
sharing cool scripts and one-liners that others might find helpful.
Here's my contribution for the day:

    https://github.com/CodeGnome/stackmount.sh

Synopsis: Stack encfs on top of sshfs, in order to mount a remote
encrypted directory. This enables remote storage of sensitive data on
hosts which may not be fully secure, e.g. on a virtual private server.

As always, patches and suggestions for improvement are welcome. :)
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Todd A. Jacobs | 21 Mar 22:15
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Challenges?

Does anyone on the list have any current shell or ruby challenges that
they're dealing with? Things have been very quiet here lately, and I'm
looking for something a little tricky to stretch the grey matter.
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Todd A. Jacobs | 15 Mar 01:29
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Calling a list of methods in Ruby

I have some code with an array of method names, and I want to call
each method in turn. Right now, I have:

    [ :foo, :bar, :baz ].each { |the_method|
some_object.method(the_method).call }

which works. However, the whole method(x).call chain seems like the
long way around this particular issue. AFAICT, Ruby doesn't really
support indirect variables like bash does (e.g. the ${!foo} construct)
so I'm not sure how to do this in a less bizarre way.

Anyone know the Ruby Way to do this?
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Todd A. Jacobs | 13 Mar 06:39
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New script: heroku-backups.sh

#!/bin/bash
#
# Name:
#     heroku-backups.sh
#
# Purpose:
#     Backup a PostgreSQL database from Heroku using the heroku gem.
#
# Author:
#     Todd A. Jacobs <bash_junkie@...>
#
# Versioning:
#     $Revision: 1.4 $
#     $Date: 2011/03/13 05:38:19 $

set -e
set -o pipefail

# Modify the default paths here. These values can be overridden from
the
# environment at runtime.
: ${RVM_SETUP_SCRIPT:="/path/to/rvm"}
: ${PROJECT_DIR="/path/to/project"}
: ${BACKUP_DIR="/path/to/backups"}

# Capture date at start of run, to avoid having the wrong date for
# long-running jobs that start near midnight.
DATE=$(date +%F-%s.%N)

# If heroku gem isn't in the path, try using rvm.
(Continue reading)

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