command not found and syntax error near unexpected token

Question

I have this script to divide a file over a 100000 or even more in 50000 lines.

desc()                                                 
   {                                                   
   echo $1 $2|awk '{d=$1;}                             
   BEGIN {a=1;b=0}                                     
      { f=d"0"a;                                       
        while ((getline x<d)>0)                        
          { print x>>f".txt"                           
            if (b++>=50000)                            
               {                                       
                 close(f);b=0;a++;f=(a<10)?d"0"a:f=d""a
               }                                       
          }                                            
      }                                                
  END {print "Terminado ... ! "}'                      
  }                                                    

if [ -f $1 ]; then                                     
        desc $1 $2                                     
fi                                                     

When I execute it I got this error message:

sh-3.2$ parte.sh pa.txt                                 
: command not found                                     
'/parte.sh: line 2: syntax error near unexpected token `
'/parte.sh: line 2: `desc()                             
sh-3.2$                                                 

Can anyone help to solve it?

Answer 1

The first error message is : command not found rather than the usual format bash: SOMECOMMAND: command not found. This indicates that something fishy is going on.

What is going on is that your script contains carriage return characters at the end of some lines. Under Windows, a newline is represented by the two-character sequence CR,LF (carriage return followed by line feed). Under all Unix flavors, a newline is represented by the character LF only. Bash sees a line like SOMECOMMAND␍ were ␍ is a CR character, which it parses as a call to the command called SOMECOMMAND␍. Since there is no such command, bash displays its usual error message.

In the terminal, the control character CR moves the cursor back to the beginning of the line. So the rest of the message overwrites the command name.

The fix is not to use a Windows editor to edit shell scripts, or to configure your editor not to put CR characters in shell scripts.

To convert an existing file in place under Linux or Cygwin from Windows line endings to Unix line endings, you can use the following command. It works even if the original file has mixed Windows and Unix line endings.

sed -i -e 's/\r$//' parte.sh

Answer 2

Use split(1), e.g. split --lines=50000 pa.txt (or set your own prefix). Probably much, much faster than poor awk.

DESCRIPTION
   Output  fixed-size  pieces of INPUT to PREFIXaa, PREFIXab, ...; default
   size is 1000 lines, and default PREFIX is `x'.  With no INPUT, or  when
   INPUT is -, read standard input.

Answer 3

If this is an sh script, it looks like the error is in your function definition.

desc()
{

Should be:

function desc {

Script example:

#!/bin/bash
function desc {
echo Hi
}
echo Starting
desc
echo Ending