bash sh - command not found

I solved adding execute permissions:

sudo chmod +x file.sh

Remove ; from the end of your script lines.

This doesn't happen in my bash, so I'm not sure what exactly is wrong, but my guess is this:

; is a separator of commands. Since your last command ends in ;, your bash probably expects another command after. Since the script finishes, though, it reads an empty command, which it can't execute.

My guess is that you have unprintable control characters in the file, or it has \r\n (CRLF) line endings (dos/windows mode).

Try checking it with these commands:

$ hexdump -C build.sh 
00000000  23 21 2f 62 69 6e 2f 62  61 73 68 0a 63 64 20 7e  |#!/bin/bash.cd ~|
00000010  2f 77 6f 72 6b 73 70 61  63 65 2f 74 72 75 6e 6b  |/workspace/trunk|
00000020  3b 0a 73 76 6e 20 75 70  3b 0a                    |;.svn up;.|
0000002a

$ file build.sh 
build.sh: Bourne-Again shell script, ASCII text executable

$ unix2dos build.sh 
unix2dos: converting file build.sh to DOS format ...

$ hexdump -C build.sh 
00000000  23 21 2f 62 69 6e 2f 62  61 73 68 0d 0a 63 64 20  |#!/bin/bash..cd |
00000010  7e 2f 77 6f 72 6b 73 70  61 63 65 2f 74 72 75 6e  |~/workspace/trun|
00000020  6b 3b 0d 0a 73 76 6e 20  75 70 3b 0d 0a           |k;..svn up;..|
0000002d

$ file build.sh 
build.sh: Bourne-Again shell script, ASCII text executable, with CRLF line terminators

I Have resolved my error from this command.

sudo chmod +x build.sh