updated hdfs-du-viz.sh

contrib/hdfs-du-viz.sh

@@ -7,22 +7,22 @@
 
 max_depth=5
 
-largest_root_dirs=$(hdfs dfs -du -s '/*' | sort -nr | perl -ane 'print "$F[1] "')
+largest_root_dirs="$(hdfs dfs -du -s '/*' | sort -nr | perl -ane 'print "$F[1] "')"
 
 printf "%15s  %s\n" "bytes" "directory"
 for ld in $largest_root_dirs; do
-    printf "%15.0f  %s\n" $(hdfs dfs -du -s $ld| cut -d' ' -f1) $ld
-    all_dirs=$(hdfs dfs -ls -R $ld | egrep '^dr........' | perl -ane "scalar(split('/',\$_)) <= $max_depth && print \"\$F[7]\n\"" )
+    printf "%15.0f  %s\n" "$(hdfs dfs -du -s "$ld" | cut -d' ' -f1)" "$ld"
+    all_dirs="$(hdfs dfs -ls -R "$ld" | grep -E '^dr........' | perl -ane "scalar(split('/',\$_)) <= $max_depth && print \"\$F[7]\n\"" )"
 
     for d in $all_dirs; do
-        line=$(hdfs dfs -du -s $d)
-        size=$(echo $line | cut -d' ' -f1)
+        line="$(hdfs dfs -du -s "$d")"
+        size="$(cut -d' ' -f1 <<< "$line")"
         parent_dir=${d%/*}
         child=${d##*/}
         if [ -n "$parent_dir" ]; then
-            leading_dirs=$(echo $parent_dir | perl -pe 's/./-/g; s/^.(.+)$/\|$1/')
+            leading_dirs=$(perl -pe 's/./-/g; s/^.(.+)$/\|$1/' <<< "$parent_dir")
             d=${leading_dirs}/$child
         fi
-        printf "%15.0f  %s\n" $size $d
+        printf "%15.0f  %s\n" "$size" "$d"
     done
 done