Confused

Hi all

I am confused .

When SUSE linux is loaded in an embedded
bord , how usual controlcommands are writen
like IF, WHILE, SWITCH .

Does LINUX offer such commands ?

If yes where online SUSE commands ore offered
for refference ?

Elico

those commands are typically built-in functions of a shell, such as Bash or C-Shell. for example, you could write a bash script using some of those functions like this:

Code:

---

#!/bin/bash
max=5
i=1
while [ $i -le $max ]; do
  echo $i

  if [ $i -eq $max ]; then
    echo This is the end
  fi
  i=$(( $i + 1 ))
  sleep 1
done

---

copy that code to a file, e.g., named "test.sh", make it executable:

Code:

---

chmod +x ./test.sh

---

then execute it:

Code:

---

./test.sh

---

To read more on the functions in Bash, read the man page:

Code:

---

man bash

---

The switch function is available in the C-shell (csh, tcsh, etc.), although you can emulate the functionality in bash. Read up on it in the tcsh man page:

Code:

---

man tcsh

---

In case of C language code is writen and cross compiled
to deploy on the linux based board, how LINUX threads and tasks
are includded in that C code ?

do we include LINUX heder files at design time in the C code ?

Elico

Okay, C programming. There is lots of documentation for that at your disposal. See this GNU article on using the getopt function, which also displays the switch function in action:

Example of Getopt - The GNU C Library

At the top of the example program there, you will see header include files at the top of the code, containing functions, etc. called within the program.

Thanks
Elico