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New hosts preference in ~/.br.hosts #6

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New hosts preference in ~/.br.hosts #6

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d504946
Added ~/.br.hosts preference to default hosts option
danfinkelstein Dec 30, 2012
47bbac9
Added ~/.br.hosts preference to default hosts option in readme
danfinkelstein Dec 30, 2012
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2 changes: 1 addition & 1 deletion README.textile
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Expand Up @@ -8,7 +8,7 @@ bashreduce lets you apply your favorite unix tools in a mapreduce fashion across

h2. Configuration

Edit @/etc/br.hosts@ and enter the machines you wish to use as workers. Or specify your machines at runtime:
Edit @~/.br.hosts@ and/or @/etc/br.hosts@ and enter the machines you wish to use as workers. Or specify your machines at runtime:

<pre>br -m "host1 host2 host3"</pre>

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8 changes: 5 additions & 3 deletions br
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Expand Up @@ -13,7 +13,7 @@ showhelp() {
echo "Usage: `basename $1`: [-m host1 [host2...]] [-c column] [-r reduce] [-i input] [-o output]"
echo "bashreduce. Map an input file to many hosts, sort/reduce, merge"
echo " -m: hosts to use, can repeat hosts for multiple cores"
echo " default hosts from /etc/br.hosts"
echo " default hosts from ~/.br.hosts or /etc/br.hosts"
echo " -c: column to partition, default = 1 (1-based)"
echo " -r: reduce function, default = identity"
echo " -i: input file, default = stdin"
Expand Down Expand Up @@ -47,10 +47,12 @@ while getopts "m:c:r:i:o:t:S:h" name; do
done

if [ -z $hosts ]; then
if [ -e /etc/br.hosts ]; then
if [ -e $HOME/.br.hosts ]; then
hosts=`cat $HOME/.br.hosts`
else if [ -e /etc/br.hosts ]; then
hosts=`cat /etc/br.hosts`
else
echo "`basename $0`: must specify hosts with -m or provide /etc/br.hosts"
echo "`basename $0`: must specify hosts with -m or provide ~/.br.hosts or /etc/br.hosts"
usage $0
fi
fi
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