bash undocumented syntax error

bash undocumented syntax error

[Linux for blind general discussion]

The man page has nothing on unexpected end of file in it; searching for
unexpected in that man page provides no mention of unexpected.



--

Re: bash undocumented syntax error

[Linux for blind general discussion]

On Sun, 13 Jan 2019, Linux for blind general discussion wrote:

> The man page has nothing on unexpected end of file in it; searching for
> unexpected in that man page provides no mention of unexpected.

Possibly I've missed the context for this if it's a new thread resulting 
from a previous one (I am not up-to-date on this list).

The error seems pretty self-explanatory.  Bash expected more input when it 
reached the end.

I would expect that it was either looking for a closing quote (single or 
double) or a closing bracket of some sort.

what are you trying to do?

Cheers,
Geoff.

Re: bash undocumented syntax error

[Linux for blind general discussion]

Yeah, an error of this type is hard enough to debug when you have
access to the buggy code. Debugging from the error message alone is
nearly impossible in cases like this.

I will mention, however, that bash, and many other shells/scripting
languages, aren't picky about single quotes versus double quotes in
general, but can be quite picky that they're used consistently. E.g.
if you start a string literal with single quotes, you'd better end it
with single quotes, and if you start it with double quotes, you'd
better end it with double quotes, but bash probably doesn't care which
you use as long as the beginning and ending delimiters are the same.

Probably about the best advice I can give without examining the code directly.

-Jeff

On 1/13/19, Linux for blind general discussion <blinux-list@redhat.com> wrote:
> On Sun, 13 Jan 2019, Linux for blind general discussion wrote:
>
>> The man page has nothing on unexpected end of file in it; searching for
>> unexpected in that man page provides no mention of unexpected.
>
> Possibly I've missed the context for this if it's a new thread resulting
> from a previous one (I am not up-to-date on this list).
>
> The error seems pretty self-explanatory.  Bash expected more input when it
> reached the end.
>
> I would expect that it was either looking for a closing quote (single or
> double) or a closing bracket of some sort.
>
> what are you trying to do?
>
> Cheers,
> Geoff.
>
> _______________________________________________
> Blinux-list mailing list
> Blinux-list@redhat.com
> https://www.redhat.com/mailman/listinfo/blinux-list
>

Re: bash undocumented syntax error

[Linux for blind general discussion]

On Sun, 13 Jan 2019, Linux for blind general discussion wrote:

> Date: Sun, 13 Jan 2019 13:08:06
> From: Linux for blind general discussion <blinux-list@redhat.com>
> To: Linux for blind general discussion <blinux-list@redhat.com>
> Subject: Re: bash undocumented syntax error
file integrity checking when the time is right.
Here's some code:

#!/usr/bin/env bash
# file: getslint.sh - download latest slint iso.
if [ -f wget-log ];
rm wget-log
   wget -bc --tries=inf --max-redirect=10000 --trust-server-names https://sourceforge.net/projects/slint/files/latest/download
   until [ tail -2 wget-log|grep "saved" ]; do
sleep 5
	 done
sha256sum -c slint64-14.2.1.1.sha256sum

>
> On Sun, 13 Jan 2019, Linux for blind general discussion wrote:
>
> > The man page has nothing on unexpected end of file in it; searching for
> > unexpected in that man page provides no mention of unexpected.
>
> Possibly I've missed the context for this if it's a new thread resulting from
> a previous one (I am not up-to-date on this list).
>
> The error seems pretty self-explanatory.  Bash expected more input when it
> reached the end.
>
> I would expect that it was either looking for a closing quote (single or
> double) or a closing bracket of some sort.
>
> what are you trying to do?
>
> Cheers,
> Geoff.
>
> _______________________________________________
> Blinux-list mailing list
> Blinux-list@redhat.com
> https://www.redhat.com/mailman/listinfo/blinux-list
>

-- 

Re: bash undocumented syntax error

[Linux for blind general discussion]

Hi Jeff,

On Sun, 13 Jan 2019 18:44:14 +0000
Linux for blind general discussion <blinux-list@redhat.com> wrote:

> Yeah, an error of this type is hard enough to debug when you have
> access to the buggy code. Debugging from the error message alone is
> nearly impossible in cases like this.
> 
> I will mention, however, that bash, and many other shells/scripting
> languages, aren't picky about single quotes versus double quotes in
> general, but can be quite picky that they're used consistently. E.g.
> if you start a string literal with single quotes, you'd better end it
> with single quotes, and if you start it with double quotes, you'd
> better end it with double quotes, but bash probably doesn't care which
> you use as long as the beginning and ending delimiters are the same.
> 

see
https://stackoverflow.com/questions/6697753/difference-between-single-and-double-quotes-in-bash
- they have different semantics.

> Probably about the best advice I can give without examining the code directly.
> 
> -Jeff
> 
> On 1/13/19, Linux for blind general discussion <blinux-list@redhat.com> wrote:
> > On Sun, 13 Jan 2019, Linux for blind general discussion wrote:
> >  
> >> The man page has nothing on unexpected end of file in it; searching for
> >> unexpected in that man page provides no mention of unexpected.  
> >
> > Possibly I've missed the context for this if it's a new thread resulting
> > from a previous one (I am not up-to-date on this list).
> >
> > The error seems pretty self-explanatory.  Bash expected more input when it
> > reached the end.
> >
> > I would expect that it was either looking for a closing quote (single or
> > double) or a closing bracket of some sort.
> >
> > what are you trying to do?
> >
> > Cheers,
> > Geoff.
> >
> > _______________________________________________
> > Blinux-list mailing list
> > Blinux-list@redhat.com
> > https://www.redhat.com/mailman/listinfo/blinux-list
> >  
> 
> _______________________________________________
> Blinux-list mailing list
> Blinux-list@redhat.com
> https://www.redhat.com/mailman/listinfo/blinux-list



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Re: bash undocumented syntax error

[Linux for blind general discussion]

On Sun, 13 Jan 2019, Linux for blind general discussion wrote:

> file integrity checking when the time is right.
> Here's some code:
>
> #!/usr/bin/env bash
> # file: getslint.sh - download latest slint iso.
> if [ -f wget-log ];
> rm wget-log

It looks like you solved this, but I believe this should be (it's been 
awhile since I've done this):

if [ -f wget-log ]
   then rm wget-log
fi

for a one-liner like this, you could just as easily write:

[ -f wget-log ] && rm wget-log

or

test -f wget-log && rm wget-log

>   wget -bc --tries=inf --max-redirect=10000 --trust-server-names https://sourceforge.net/projects/slint/files/latest/download
>   until [ tail -2 wget-log|grep "saved" ]; do
> sleep 5
> 	 done
> sha256sum -c slint64-14.2.1.1.sha256sum

NOt sure exactly why you're doing this.  It looks like you're putting wget 
in the background, then waiting around until it finishes.  So why 
background it at all?

Cheers,
Geoff.