AmigaDOS echo bug found

I was looking at this documentation.

http://amiga.sourceforge.net/amigadev ... up=AmigaDOS&action=Search

I'm not so good with AmigaDOS scripts, what I wont to do is remove the "/" from a string.

I using "c:requestfile" to get directory.

I'm getting something like "Ram disk:t/"
So I wont to make directory inside "Ram disk:t/"

I have done like:
Set mydir ´c:requestfile title "pick directory"´
Trying to do.
Makedir $mydirNEWDIR

Results in $mydirNEWDIR

don't work, so trying to do:

Makedir $mydir/MYDIR

Results in "Ram Disk:t//MYDIR", this wont work as "//" is parent directory in AmigaOS.

So I was thinking what If removed "/" from back of $mydir.
looking at documentation, I found that echo can take parts of string.

But only from the first chars, to length, as I have coded in PHP, I know that using negative length values, might product what I wanted. So I tried.

echo len -1 "$mydir"

this resulted is a frozen AmigaOS.

http://www.w3schools.com/php/func_string_substr.asp

@LiveForIt

If my memory serves me right:

Quote:

You need to use the brackets, so that the script knows when the name of the variable ends.

The standard brackets in DOS are < and > so:


should work.

If you need the redirections you can set other brackets with:

@Gazelle

Thanks it worked.

Anyway it be nice if, echo supported the -1 len value, never know when you need to remove the last chars from a string.

Crashing is not that nice.

Bug report (and enhancement request) submitted to OS4 Bugzilla.

I had similar problems and in the end wrote my own program to do it as I found both echo and cut to be unsatisfactory.

Here's the help from my command:

> cutstring
CutString V0.04 (c)14.12.2014 Nick Clover
STRING/A,L=LEFT/S,R=RIGHT/S,M=MID/S,D=DRIVE/S,P=PATH/S,F=FILENAME/S,N=NAME/S,E=EXT/S,START/N,NUMCHARS/N

Examples:
CutString "hello world" LEFT 5 -> "hello"
CutString "hello world" RIGHT 5 -> "world"
CutString "hello world" MID 5 4 -> "o wo"
CutString "hello world" MID 5 -> "o world"
CutString "work:examples/doc1.txt" DRIVE -> "work:"
CutString "work:examples/doc1.txt" PATH -> "work:examples/"
CutString "work:examples/doc1.txt" FILENAME -> "doc1.txt"
CutString "work:examples/doc1.txt" NAME -> "doc1"
CutString "work:examples/doc1.txt" EXT -> "txt"
If no switch is given MID is used.
If a negative value is used for LEFT or RIGHT characters are cut off the end. eg.
CutString "work:examples/" RIGHT -1 -> "work:examples"

@LiveForIt:

In your specific situation described above, you'd probably be much better off investigating the C:PathPart command. Check out "help pathpart".

Best regards,

Niels

Quote:

In addition to Gazelle's response, another solution to that is to join two environment variables together, like $mydir$mydir2

Best solution would be using c:pathpart as suggested by nbache.

Makedir "`pathpart "$mydir" NEWDIR`"