[SOLVED] Shell Scripting "syntax error : unexpected end of file" in case of a if/else condition

Anna$9 · 11-06-2017, 04:20 AM

if [ -d "$/abc/de" ];
then
echo "$/abc/de directory exists!"
else
echo "$/abc/de directory not found!"
fi

##note i have not used "#!/bin/sh"
will that cause the issue.
Using #!/bin/sh is causing different issue

pan64 · 11-06-2017, 04:39 AM

I'm sorry, that script works for me both with sh and bash. Would be nice to give a better description of that problem. How can you reproduce it exactly?

Shadow_7 · 11-06-2017, 04:59 AM

In debian the #!/bin/sh runs the script in "dash", not bash. Use #!/bin/bash if you need the "bash" extras. In spite of what practices and books have said about bash scripting for the past twenty-ish.

michaelk · 11-06-2017, 05:24 AM

"syntax error : unexpected end of file" usually means that there isn't an End Of Line (EOL) character on the last line of your script. Editing the file and moving the cursor to the end of the last line and pressing the enter key should fix the error.

sundialsvcs · 11-06-2017, 07:52 AM

Quote:

Originally Posted by michaelk

"syntax error : unexpected end of file" usually means that there isn't an End Of Line (EOL) character on the last line of your script. Editing the file and moving the cursor to the end of the last line and pressing the enter key should fix the error.

Also, speaking to the more-general case of "programming languages, not necessarily Bash," all programming tools start by passing your source-code through a so-called parser, which basically tries to match-up the source that you have written against the known structure of the language (expressed by a so-called grammar). But you can make certain syntax errors – such as, say, an un-closed quote for a string literal near the end of the program – which will cause the parser to "stupidly run away" and crash headlong into the end of the file. It can be rather-annoyingly tricky to pinpoint the actual location of the problem.

michaelk · 11-06-2017, 08:00 AM

True, but I did post usually...

Anna$9 · 11-07-2017, 10:36 PM

Quote:

Originally Posted by michaelk

"syntax error : unexpected end of file" usually means that there isn't an End Of Line (EOL) character on the last line of your script. Editing the file and moving the cursor to the end of the last line and pressing the enter key should fix the error.

Still facing the same issue,actually trying in Linux VM using Putty.

Anna$9 · 11-07-2017, 10:40 PM

I have tried all possible ways to solve it,
./demo.sh: /bin/bash^M: bad interpreter: No such file or directory
facing this.
But on removing this "!/bin/bash"...it seems to run the program.But still the issue "Shell Scripting "syntax error : unexpected end of file"" seems to persist.

ondoho · 11-08-2017, 12:23 AM

please post output of

Code:

echo $SHELL

if that's empty, try

Code:

ls -al /bin/sh

and any other relevant information.

!!! · 11-08-2017, 12:40 AM

Welcome to LQ!!! The ^M is the 'clue'!!! Here's something to web-research: dos2unix

Quote:

I found the problem - carriage-return characters in the file.

I was typing the script in Windows (text pad) and executing it on Linux. The editor on Windows ends lines with \r\n; when running the script on Linux, the presence of \r was creating a problem.

Using vi as editor helped me resolve this issue.

Code:

$ echo -e '#!/bin/sh\r' > bad.sh
$ chmod 755 bad.sh
$ sh bad.sh
$ ./bad.sh
bash: ./bad.sh: /bin/sh^M: bad interpreter: No such file or directory
$ cat bad.sh
#!/bin/sh
$ od -ct x1 bad.sh
0000000   #   !   /   b   i   n   /   s   h  \r  \n
        23 21 2f 62 69 6e 2f 73 68 0d 0a
0000013
$

Anna$9 · 11-08-2017, 01:02 AM

Quote:

Originally Posted by ondoho

please post output of

Code:

echo $SHELL

if that's empty, try

Code:

ls -al /bin/sh

and any other relevant information.

Output of

Code:

echo $SHELL

Code:

[root@ip-xxx-xx-xxx-xx ~]# echo $SHELL
/bin/bash

pan64 · 11-08-2017, 01:45 AM

./demo.sh: /bin/bash^M: bad interpreter: No such file or directory - this is solved in #10
"syntax error : unexpected end of file"
Are two different, unrelated issues. Would be nice to post your script - exactly what you tried to execute - and also would be nice to explain exactly how can we reproduce that error.

!!! · 11-08-2017, 02:18 AM

A web-search of the error: "syntax error : unexpected end of file"
finds this may be due to:

Quote:

the shell can also emit this message when the final line of your script lacks a newline.

https://stackoverflow.com/questions/...-file/17145123

Try: od -c demo.sh | nc termbin.com 9999 #and post link
and look for extra \r

Quote:

explain exactly how can we reproduce that error.

Put a \r==^M at end of last line (fi), instead \n, and you WILL get that error!!!

Code:

$ od -ct x1 demo.sh |tail -4
        20 64 69 72 65 63 74 6f 72 79 20 6e 6f 74 20 66
0000140   o   u   n   d   !   "  \n   f   i  \r
        6f 75 6e 64 21 22 0a 66 69 0d
$ ./demo.sh
./demo.sh: line 6: syntax error: unexpected end of file (expecting "fi")

Anna$9 · 11-08-2017, 03:04 AM

Quote:

Originally Posted by !!!

A web-search of the error: "syntax error : unexpected end of file"
finds this may be due to:
https://stackoverflow.com/questions/...-file/17145123

Try: od -c demo.sh | nc termbin.com 9999 #and post link
and look for extra \r

Code:

[root@ip-xxx-xx-xxx-xx tmp]# od -c demo.sh
0000000   i   f       "   $   (   p   s       -   e   f   |   g   r   e
0000020   p       c   o   m   m   v   a   u   l   t   )   "       >
0000040   /   d   e   v   /   n   u   l   l  \r  \n   t   h   e   n  \r
0000060  \n                   e   c   h   o       "   R   u   n   n   i
0000100   n   g   "  \r  \n   e   l   s   e  \r  \n                   e
0000120   c   h   o       "   S   t   o   p   p   e   d   "  \r  \n   f
0000140   i  \r  \n
0000143

Quote:

Sorry but can you please help me understand.
I am getting security alerts while trying to post.

Anna$9 · 11-08-2017, 03:10 AM

Quote:

Originally Posted by pan64

./demo.sh: /bin/bash^M: bad interpreter: No such file or directory - this is solved in #10
"syntax error : unexpected end of file"
Are two different, unrelated issues. Would be nice to post your script - exactly what you tried to execute - and also would be nice to explain exactly how can we reproduce that error.

Code:

if [ -d "$/abc/de" ];
then
echo "$/abc/de directory exists!"
else
echo "$/abc/de directory not found!"
fi

I have already posted this,this is a simple if/else statement that does not work in a Linux VM.