Add safety barrier to c_scan_N_fixed (to avoid accidental data loss)

scripts/catalogue/c_scan_N_fixed_data.sh

@@ -80,6 +80,17 @@ done
 
 basedir="$(pwd)"
 
+# Safety barrier:
+# if directory exists, don't do anything and request directory deletion before proceeding
+dircheck='Lieb-Liniger/'$correlator'/T_'$kBT'/c_scan_N_fixed/k_0_to_'${(l:2::0:)nkmax}'kFo4/sr_'$target_sumrule'/store/data/N_'$N
+echo $dircheck
+if [[ -d $dircheck ]]; then
+    echo 'A c scan with these parameters already exists. Aborting.'
+    echo 'If you really want to run this command, please first delete directory:\n'$dircheck
+    exit
+fi
+
+
 for c in $clist
 do
     echo '** Starting run for c =' $c', N = '$N | tee -a $logfile