Update csv-functions.sh

csv-functions.sh

@@ -3,6 +3,10 @@
 # Perform streaming operations with CSV files.
 # When files are too large to fit into memory, streaming might be the only alternative.
 
+PROFILE="$HOME/.profile"
+CSV_SRC="$HOME/.csv-functions.sh"
+CSV_URL='https://projects.sisrlab.com/idm/dataset-guide/raw/master/csv-functions.sh?inline=false'
+
 # collapse fields containing newlines
 alias csv.collapse='perl -pe "s/\\\\\n/ /" -'
 
@@ -33,8 +37,11 @@ csv.count() { wc -l - | awk '{ print $1 }' }
 # cat a CSV file
 csv.cat() { cat $1 | csv.collapse }
 
-# print column names, each on a separate line
+# For a CSV with a header row, print column names, each on a separate line
 csv.names() { csv.cat $1 | csv.limit 1 | csv.unquote | csv.split }
 
 # built-in updater
-csv.update() { wget -O ~/.csv-functions.sh 'https://projects.sisrlab.com/idm/dataset-guide/raw/master/csv-functions.sh?inline=false'; source ~/.csv-functions.sh }
+csv.update() { wget -O $CSV_SRC $CSV_URL; source $CSV_SRC }
+
+# make installation permanent
+csv.install() { if [[ -z `grep csv-functions.sh $PROFILE` ]]; then echo "source $CSV_SRC" >> $PROFILE; fi }