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Full Discussion: FTP Script Help!!
Top Forums Shell Programming and Scripting FTP Script Help!! Post 302923883 by Don Cragun on Wednesday 5th of November 2014 02:20:13 AM
Old 11-05-2014
Quote:
Originally Posted by Aia
@No Don, I did not

This is what I said:
Quote:
I would like to bring to your attention the following combination of commands in red, which has the potential of spread disaster.

The command cd will silently change directory to your $HOME if it can not use $READDIR to change. Once's in there I don't know the mayhem that it would do, but for sure you can kiss goodbye to your data in $HOME.
Noticed that I only posted a small portion of the code to just bring attention to the possible harmful practice, tenting fate with rm *. I did not even do reference to the specific code, except for the $READDIR because it was there. I could had said cd $NOTHING_HERE and it would had done the job. That portion of the code was copied to help the OP know what I was talking about.

You described the specific condition I pointed out in your point 1:

But any of the others, would nicely had created the same disaster.
With the code being discussed in this thread:
Code:
...
export READDIR=/home/foobaruser/TDE
#export TEMP=/opt/foobar/$ENV/tmp
export TDE_BACKUP=/home/foobaruser/TDE/backup

cd $READDIR
...

as I said before, there is absolutely no way that the cd command shown in red above is going to "silently change directory to your $HOME if it can not use $READDIR to change". I said there were three ways that a cd command could move you to $HOME AND NONE of them are possible with this code.

I fully agree that ignoring exit codes from cd, cp, sftp, and other utilities is a recipe for disaster; but there is no way the above code is ever going to silently change directory to $HOME.
 

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LEARN ABOUT OSX

set_color

set_color(1)							       fish							      set_color(1)

NAME

       set_color - set_color - set the terminal color

set_color - set the terminal color
   Synopsis
       set_color [-v --version] [-h --help] [-b --background COLOR] [COLOR]

   Description
       Change the foreground and/or background color of the terminal. COLOR is one of black, red, green, brown, yellow, blue, magenta, purple,
       cyan, white and normal.

       o -b, --background Set the background color

       o -c, --print-colors Prints a list of all valid color names

       o -h, --help Display help message and exit

       o -o, --bold Set bold or extra bright mode

       o -u, --underline Set underlined mode

       o -v, --version Display version and exit

       Calling set_color normal will set the terminal color to whatever is the default color of the terminal.

       Some terminals use the --bold escape sequence to switch to a brighter color set. On such terminals, set_color white will result in a grey
       font color, while set_color --bold white will result in a white font color.

       Not all terminal emulators support all these features. This is not a bug in set_color but a missing feature in the terminal emulator.

       set_color uses the terminfo database to look up how to change terminal colors on whatever terminal is in use. Some systems have old and
       incomplete terminfo databases, and may lack color information for terminals that support it. Download and install the latest version of
       ncurses and recompile fish against it in order to fix this issue.

Version 1.23.1							  Sun Jan 8 2012						      set_color(1)
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