1 files changed, 7 insertions, 4 deletions

diff --git a/src/makecolumns.sh b/src/makecolumns.sh
index 8cb255c..1d4c399 100755
--- a/src/makecolumns.sh
+++ b/src/makecolumns.sh
@@ -199,15 +199,18 @@ handle_new_format() {
     printf "Extracting phonebook.db ... "
     decompress $1/phonebook.db | grep -v appropriate
 
-    numfiles=`find . -name file_\* | wc -l`
+    rows=`find . -name file_\* | wc -l`
+    rows=$(( rows / 11 ))
     printf "done.\n"
 
+    # Do enumerations with builtin shell tools. Unfortunally neither
+    # jot nor seq are standards
     printf "Splitting decompressed chunks into their columns (11 total) ... 0, "
-    for file in `jot - 0 $(( numfiles - 1 )) 11`; do printf "file_%05X " ${file}; done | xargs cat | xxd -ps -c1 > column_0
+    f=0; while [ $f -lt $rows ]; do printf "file_%05X " $(( f++ * 11)); done | xargs cat | xxd -ps -c1 > column_0
 
-    for column in `jot 10`; do
+    for column in 1 2 3 4 5 6 7 8 9 10; do
       printf "%d, " $column
-      for file in `jot - ${column} $numfiles 11`; do printf "file_%05X " ${file}; done | xargs cat | tr '\n\0' '\t\n' > column_${column}
+      f=0; while [ $f -lt $rows ]; do printf "file_%05X " $(( column + f++ * 11 )); done | xargs cat | tr '\n\0' '\t\n' > column_${column}
     done
     printf "done.\n"