Edit detail for SandBox Text Files revision 1 of 1

changed:
-
This is a simple example of writing to and reading from a text file:
\begin{axiom}
f1: TextFile := open("/tmp/test", "output")
writeLine!(f1, "abcdefg")
close! f1
f2: TextFile := open("/tmp/test", "input")
l := readLine! f2
output l
close! f2
\end{axiom}

Here is a system command. It display how many files there are
in the default current directory where Axiom is run.
\begin{axiom}
)set output algebra on
systemCommand("system ls | wc")
\end{axiom}

Please do not try to list the complete contents of this directory!
If you do, MathAction will appear to hang.

Here is a shorter list of files that works ok:
\begin{axiom}
)set output algebra on
systemCommand("system ls .. > /tmp/test")
\end{axiom}

\begin{axiom}
f2: TextFile := open("/tmp/test", "input")
while not endOfFile? f2 repeat
    s := readLine! f2
    output s
close! f2
\end{axiom}

Here is an example of how to call a polymake constructor.
Notice that you must use the full path name.
\begin{axiom}
)set output algebra on
systemCommand("system /usr/local/polymake/bin/cube /tmp/cube4.poly 4 2>/tmp/cube4.stderr >/tmp/cube4.stdout")
\end{axiom}
Here is the standard output of the command (if any):
\begin{axiom}
systemCommand("system cat /tmp/cube4.stdout")
\end{axiom}
Here is the error output of the command (if any):
\begin{axiom}
systemCommand("system cat /tmp/cube4.stderr")
\end{axiom}

Now display the contents of the file that was created:
\begin{axiom}
f2: TextFile := open("/tmp/cube4.poly", "input")
while not endOfFile? f2 repeat
    s := readLine! f2
    output s
close! f2
\end{axiom}

From kratt6 Fri Aug 26 16:55:21 -0500 2005
From: kratt6
Date: Fri, 26 Aug 2005 16:55:21 -0500
Subject: 
Message-ID: <20050826165521-0500@page.axiom-developer.org>

\begin{axiom}
systemCommand("system /usr/local/polymake/bin/cross /tmp/c4.poly 4")
systemCommand("system cat /tmp/c4.poly")
\end{axiom}

This is a simple example of writing to and reading from a text file:

fricas

(1) -> f1: TextFile := open("/tmp/test", "output")

(1)

Type: TextFile?

fricas

writeLine!(f1, "abcdefg")

(2)

Type: String

fricas

close! f1

(3)

Type: TextFile?

fricas

f2: TextFile := open("/tmp/test", "input")

(4)

Type: TextFile?

fricas

l := readLine! f2

(5)

Type: String

fricas

output l

   abcdefg

Type: Void

fricas

close! f2

(6)

Type: TextFile?

Here is a system command. It display how many files there are in the default current directory where Axiom is run.

fricas

)set output algebra on

systemCommand("system ls | wc")

 106805  106818 3417692

Type: Void

Please do not try to list the complete contents of this directory! If you do, MathAction will appear to hang.

Here is a shorter list of files that works ok:

fricas

)set output algebra on

systemCommand("system ls .. > /tmp/test")

Type: Void

fricas

f2: TextFile := open("/tmp/test", "input")

   (10)  "/tmp/test"

(7)

Type: TextFile?

fricas

while not endOfFile? f2 repeat
    s := readLine! f2
    output s

   Data.fs
   Data.fs.index
   Data.fs.lock
   Data.fs.old
   Data.fs.tmp
   LatexWiki
   README.txt
   Z2.lock
   Z2.pid
   graphviz.pdf.xml
   pts
   revisions.xml
   x.png
   zopectlsock

Type: Void

fricas

close! f2

   (12)  "/tmp/test"

(8)

Type: TextFile?

Here is an example of how to call a polymake constructor. Notice that you must use the full path name.

fricas

)set output algebra on

systemCommand("system /usr/local/polymake/bin/cube /tmp/cube4.poly 4 2>/tmp/cube4.stderr >/tmp/cube4.stdout")

Type: Void

Here is the standard output of the command (if any):

fricas

systemCommand("system cat /tmp/cube4.stdout")

Type: Void

Here is the error output of the command (if any):

fricas

systemCommand("system cat /tmp/cube4.stderr")

/bin/sh: 1: /usr/local/polymake/bin/cube: not found

Type: Void

Now display the contents of the file that was created:

fricas

f2: TextFile := open("/tmp/cube4.poly", "input")

   >> Error detected within library code:
   "File is not readable""/tmp/cube4.poly"

... --kratt6, Fri, 26 Aug 2005 16:55:21 -0500 reply

fricas

systemCommand("system /usr/local/polymake/bin/cross /tmp/c4.poly 4")

Type: Void

fricas

systemCommand("system cat /tmp/c4.poly")

Type: Void