Converting Linux scripts to FreeBSD?

jonfr · May 9, 2013

I run an automatic counter on my FreeBSD server, my current scripts did work properly in Gentoo Linux. They do not work in FreeBSD, I get the following error.

Code:

./eq.imo.sh 
URL=http://hraun.vedur.is/ja/englishweb/eqlist.html: Command not found.
TODAYSDATE=2013-05-09: Command not found.
URL: Undefined variable.
COUNT=: Command not found.
COUNT: Undefined variable.

This I need to fix. Here is the code for the script in question.

Code:

#earthquake count shell V0.0.1
#!/bin/bash

URL="http://hraun.vedur.is/ja/englishweb/eqlist.html"
TODAYSDATE=`date +%Y-%m-%d`
#TODAYSDATE=`date +%Y/%m/%d`
#TODAYSDATE=`date +%Y-%m-%d`

COUNT=`lynx -dump ${URL} | grep ${TODAYSDATE} | grep -vi updated | wc -l`
#COUNT=`wget -O ${URL} | grep ${TODAYSDATE} | grep -vi updated | wc -l`
echo ${COUNT}
echo ${COUNT}
#echo ${COUNT}
#echo "uptime"
#echo "hostname"

exit 0

I also got same script for a second counter that I am running. I can adopt this script to that counter with no issues, since they are both doing the same thing, just in different part of the world.

Thanks for the help.

vermaden · May 9, 2013

Try that:

Code:

#!/bin/sh

#earthquake count shell V0.0.1

URL="http://hraun.vedur.is/ja/englishweb/eqlist.html"
TODAYSDATE=`date +%Y-%m-%d`
#TODAYSDATE=`date +%Y/%m/%d`
#TODAYSDATE=`date +%Y-%m-%d`

COUNT="`lynx -dump ${URL} | grep ${TODAYSDATE} | grep -vi updated | wc -l`"
#COUNT="`wget -O ${URL} | grep ${TODAYSDATE} | grep -vi updated | wc -l`"
echo ${COUNT}
echo ${COUNT}
#echo ${COUNT}
#echo "uptime"
#echo "hostname"

exit 0

tmw · May 9, 2013

Works for me

Code:

[tmw@foo ~]$ uname -a
FreeBSD foo 9.1-RELEASE FreeBSD 9.1-RELEASE #0 r243826: Tue Dec  4 06:55:39 UTC 2012     [email]root@obrian.cse.buffalo.edu[/email]:/usr/obj/usr/src/sys/GENERIC  i386

Code:

[tmw@foo ~]$ bash --version
GNU bash, version 4.1.11(0)-release (i386-portbld-freebsd9.1)

What is your bash and ~~freebsd~~ FreeBSD version? Did you try some -x to see what this script is doing?

j4ck · May 9, 2013

It also works for me. Running FreeBSD 8.2 and bash.

vermaden · May 9, 2013

Bash is not needed.

#!/bin/sh

jonfr · May 9, 2013

I am running the following.

Code:

uname -a
FreeBSD saturn.net303.net 9.1-RELEASE FreeBSD 9.1-RELEASE #0 r243826: Tue Dec  4 06:55:39 UTC 2012     root@obrian.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386

Here are the file permissions, they look good, but I might be wrong.

Code:

-rwxr-xr-x  1 root  wheel    415 May  9 05:06 eq.imo.sh

They

Code:

bash --version
GNU bash, version 4.2.42(0)-release (i386-portbld-freebsd9.1)
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

The script did work first time I did install it with mrtg, but then it just stopped working. I am seeing this error when I run the script by hand. It is the same error as before.

Code:

./eq.imo.sh 
URL=http://hraun.vedur.is/ja/englishweb/eqlist.html: Command not found.
TODAYSDATE=2013-05-09: Command not found.
URL: Undefined variable.
COUNT=: Command not found.
COUNT: Undefined variable.

I am not sure what the issue is here.

wblock@ · May 9, 2013

Look carefully at the first two lines of the script in post #1. Which line specifies the script interpreter, and which line should it be on?

jonfr · May 9, 2013

wblock@ said:
Look carefully at the first two lines of the script in post #1. Which line specifies the script interpreter, and which line should it be on?

Thanks for this, I did use the change in the post #2 and then it worked. The command seems to be literal in FreeBSD, but that is not the case in Gentoo Linux.

jonfr · May 9, 2013

I am still running into one issue. When the script is run in cron it returns the value 0 all the time, this does not happen when I run it manually. I am also getting inconsistent values when the data is moved to mrtg.

Here is the configuration file for mrtg. I might be missing something, but I am not sure what.

Code:

#---------Apache hits-----------------------
WorkDir: /usr/local/www/apache24/data/mrtg/
Target[localhost_eq]: `/usr/local/etc/mrtg/eq.imo.sh`
Options[localhost_eq]: gauge, integer ,perminute, nopercent, growright, noinfo
MaxBytes[localhost_eq]: 100000
YLegend[localhost_eq]: count
#Colours[localhost_eq]: GREEN#458B00
ShortLegend[localhost_eq]: quakes &nbsp;&nbsp;
LegendO[localhost_eq]: Earthquakes:
LegendI[localhost_eq]: Earthquakes:
Legend2[localhost_eq]: Earthquakes pr hour
Legend4[localhost_eq]: Max number of earthquakes
Title[localhost_eq]: Number of earthquakes Iceland
WithPeak[localhost_eq]: wmy
PageTop[localhost_eq]: <h1>Earthquakes Iceland Automatic </h1>
#------------End Apache Hits------------------

acheron · May 9, 2013

Make sure you have the PATH environment variable correctly specified in you crontab, something like

Code:

PATH=/etc:/bin:/sbin:/usr/bin:/usr/sbin

jonfr · May 9, 2013

I use webmin to set up my cron jobs. In the case of this script, I set it up like this.

Code:

/usr/local/bin/mrtg /usr/local/etc/mrtg/eq.imo.cfg

This is in the command section of webmin.

I am not sure what the issue is, but I think it belongs to its own thread. Since it is a different issue.