Works in telnet but not in perl?

[Bill H]

I have a perl program that is converting a pdf file to a jpg using
imagemagik and gs. Using the following command line in a telnet shell
logged in as the webmaster and in the same directory as the perl
program it works:

cd Pages;/usr/local/bin/convert ZGRH3122CHAP070827063618-1-1.pdf -
resize 300 ZGRH3122CHAP070827063618-1-1.jpg

But when I do it in perl with the following:

system("cd $displaypath;/usr/local/bin/convert $THISPROJECT
$thepagemap[$i].pdf -resize 300 $THISPROJECT$thepagemap[$i].jpg");

which expands out to (same as above):

cd Pages;/usr/local/bin/convert ZGRH3122CHAP070827063618-1-1.pdf -
resize 300 ZGRH3122CHAP070827063618-1-1.jpg

I get this error:

sh: gs: command not found
convert: Postscript delegate failed
`ZGRH3122CHAP070827063618-1-1.pdf'.
convert: missing an image filename `ZGRH3122CHAP070827063618-1-1.jpg'.


Anyone have any clue why I would get this error? Convert works fine,
it just doesn't work with gs (ghostscript) when I call it from the
perl. Also gs is in /usr/local/bin same as convert.

Bill H

 

[xhoster]

I have a perl program that is converting a pdf file to a jpg using
imagemagik and gs. Using the following command line in a telnet shell
logged in as the webmaster and in the same directory as the perl
program it works:

cd Pages;/usr/local/bin/convert ZGRH3122CHAP070827063618-1-1.pdf -
resize 300 ZGRH3122CHAP070827063618-1-1.jpg

But when I do it in perl with the following:

system("cd $displaypath;/usr/local/bin/convert $THISPROJECT
$thepagemap[$i].pdf -resize 300 $THISPROJECT$thepagemap[$i].jpg");

which expands out to (same as above):

cd Pages;/usr/local/bin/convert ZGRH3122CHAP070827063618-1-1.pdf -
resize 300 ZGRH3122CHAP070827063618-1-1.jpg

I get this error:

sh: gs: command not found
convert: Postscript delegate failed
`ZGRH3122CHAP070827063618-1-1.pdf'.
convert: missing an image filename `ZGRH3122CHAP070827063618-1-1.jpg'.

Anyone have any clue why I would get this error? Convert works fine,
it just doesn't work with gs (ghostscript) when I call it from the
perl. Also gs is in /usr/local/bin same as convert.

It looks to me like /usr/local/bin/convert doesn't use a fully resolved
path to get to gs, but rather depends on gs being the in the search path.
So if you set $ENV{PATH} to include /usr/local/bin/ before calling
/usr/local/bin/convert, it should work. Or you could change convert so
it doesn't rely on search paths to find gs.

Xho

 

[Bill H]

I have a perl program that is converting a pdf file to a jpg using
imagemagik and gs. Using the following command line in a telnet shell
logged in as the webmaster and in the same directory as the perl
program it works:

cd Pages;/usr/local/bin/convert ZGRH3122CHAP070827063618-1-1.pdf -
resize 300 ZGRH3122CHAP070827063618-1-1.jpg

But when I do it in perl with the following:

system("cd $displaypath;/usr/local/bin/convert $THISPROJECT
$thepagemap[$i].pdf -resize 300 $THISPROJECT$thepagemap[$i].jpg");

which expands out to (same as above):

cd Pages;/usr/local/bin/convert ZGRH3122CHAP070827063618-1-1.pdf -
resize 300 ZGRH3122CHAP070827063618-1-1.jpg

I get this error:

sh: gs: command not found
convert: Postscript delegate failed
`ZGRH3122CHAP070827063618-1-1.pdf'.
convert: missing an image filename `ZGRH3122CHAP070827063618-1-1.jpg'.

Anyone have any clue why I would get this error? Convert works fine,
it just doesn't work with gs (ghostscript) when I call it from the
perl. Also gs is in /usr/local/bin same as convert.

It looks to me like /usr/local/bin/convert doesn't use a fully resolved
path to get to gs, but rather depends on gs being the in the search path.
So if you set $ENV{PATH} to include /usr/local/bin/ before calling
/usr/local/bin/convert, it should work. Or you could change convert so
it doesn't rely on search paths to find gs.

Xho

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That was recommended by the admin at imagemagick also, he also told me
the easier method of just modifying the config file (not mentioned in
the docs that i could find), so it works great now!

Bill H

 

[Benoit Lefebvre]

I have a perl program that is converting a pdf file to a jpg using
imagemagik and gs. Using the following command line in a telnet shell
logged in as the webmaster and in the same directory as the perl
program it works:

cd Pages;/usr/local/bin/convert ZGRH3122CHAP070827063618-1-1.pdf -
resize 300 ZGRH3122CHAP070827063618-1-1.jpg

But when I do it in perl with the following:

system("cd $displaypath;/usr/local/bin/convert $THISPROJECT
$thepagemap[$i].pdf -resize 300 $THISPROJECT$thepagemap[$i].jpg");

which expands out to (same as above):

cd Pages;/usr/local/bin/convert ZGRH3122CHAP070827063618-1-1.pdf -
resize 300 ZGRH3122CHAP070827063618-1-1.jpg

I get this error:

sh: gs: command not found
convert: Postscript delegate failed
`ZGRH3122CHAP070827063618-1-1.pdf'.
convert: missing an image filename `ZGRH3122CHAP070827063618-1-1.jpg'.

Anyone have any clue why I would get this error? Convert works fine,
it just doesn't work with gs (ghostscript) when I call it from the
perl. Also gs is in /usr/local/bin same as convert.

Bill H

Do a chdir() instead of "cd" in your system();

chdir($displaypath);

system("/usr/local/bin/convert $THISPROJECT $thepagemap[$i].pdf -
resize 300 $THISPROJECT$thepagemap[$i].jpg");

 

[Benoit Lefebvre]

Or use the full path to your $THISPROJECT$thepagemap[$i].pdf and
$THISPROJECT$thepagemap[$i].jpg

(sorry for the "double post")

--Ben