The code was run in the same bash windows, once as a file and 11 times as commands pasted from the script into the command line.

#!/bin/bash -f
find /data/lgc*/basin_mas -name "1-S51*" -exec ls -lart {} \; 2>/dev/null >2.x
find /data/lgc*/basin_mas -name "1113-G6V*" -exec ls -lart {} \; 2>/dev/null >3.x
find /data/lgc*/basin_mas -name "1117-G6V*" -exec ls -lart {} \; 2>/dev/null >4.x
find /data/lgc*/basin_mas -name "1119-G6V*" -exec ls -lart {} \; 2>/dev/null >5.x
find /data/lgc*/basin_mas -name "1127-G6V*" -exec ls -lart {} \; 2>/dev/null >6.x
find /data/lgc*/basin_mas -name "12XW-AF5W*" -exec ls -lart {} \; 2>/dev/null >7.x
find /data/lgc*/basin_mas -name "14-UA8N*" -exec ls -lart {} \; 2>/dev/null >8.x
find /data/lgc*/basin_mas -name "150-F7U*" -exec ls -lart {} \; 2>/dev/null >9.x
find /data/lgc*/basin_mas -name "16X-AF5W*" -exec ls -lart {} \; 2>/dev/null >10.x
find /data/lgc*/basin_mas -name "2-V5*" -exec ls -lart {} \; 2>/dev/null >11.x

output files
-rw-rw-r-- 1 oneale expl 0 Feb 6 13:12 2.x
-rw-rw-r-- 1 oneale expl 0 Feb 6 13:12 3.x
-rw-rw-r-- 1 oneale expl 0 Feb 6 13:12 4.x
-rw-rw-r-- 1 oneale expl 0 Feb 6 13:12 5.x
-rw-rw-r-- 1 oneale expl 0 Feb 6 13:12 7.x
-rw-rw-r-- 1 oneale expl 0 Feb 6 13:12 6.x
-rw-rw-r-- 1 oneale expl 0 Feb 6 13:12 9.x
-rw-rw-r-- 1 oneale expl 0 Feb 6 13:12 8.x
-rw-rw-r-- 1 oneale expl 0 Feb 6 13:12 10.x
-rw-rw-r-- 1 oneale expl 348 Feb 6 13:12 11.x

output of only non-zero file
-rw-rw-r-- 1 33682 expl 1296 Feb 19 2004 /data/lgc*/basin_mas/2-V5__________________________LEDUC_WABAMUN_iso___________________________________________.hzd_glb
-rw-rw-r-- 1 34124 expl 1296 Jan 15 2004 /data/lgc*/basin_mas/2-V5__________________________REG_WABAMUN_merge___________________________________________.hzd_glb

Now running the commands 1 at a time with ".z" as the extension.

output files
-rw-rw-r-- 1 oneale expl 146 Feb 6 13:08 2.z
-rw-rw-r-- 1 oneale expl 250 Feb 6 13:18 3.z
-rw-rw-r-- 1 oneale expl 250 Feb 6 13:18 4.z
-rw-rw-r-- 1 oneale expl 250 Feb 6 13:18 5.z
-rw-rw-r-- 1 oneale expl 424 Feb 6 13:18 6.z
-rw-rw-r-- 1 oneale expl 521 Feb 6 13:22 7.z
-rw-rw-r-- 1 oneale expl 1565 Feb 6 13:14 8.z
-rw-rw-r-- 1 oneale expl 250 Feb 6 13:20 9.z
-rw-rw-r-- 1 oneale expl 521 Feb 6 13:20 10.z
-rw-rw-r-- 1 oneale expl 2416 Feb 6 13:11 11.z

output of 11.z
-rw-rw-r-- 1 33682 expl 1296 Feb 19 2004 /data/lgc10/basin_mas/2-V5__________________________LEDUC_WABAMUN_iso___________________________________________.hzd_glb
-rw-rw-r-- 1 34124 expl 1296 Jan 15 2004 /data/lgc10/basin_mas/2-V5__________________________REG_WABAMUN_merge___________________________________________.hzd_glb
-rw-rw-r-- 1 33682 expl 1296 Oct 20 2003 /data/lgc2/basin_mas/2-V5__________________________NISKU_______________________________________________________.hzd_glb
-rw-rw-r-- 1 33682 expl 1296 Oct 21 2003 /data/lgc2/basin_mas/2-V5__________________________NISKU_WABAMUN_isochron______________________________________.hzd_glb
-rw-rw-r-- 1 jbutlin expl 924876 May 8 2002 /data/lgc3/basin_mas/2-V5__________________________cnc16000102.2v2_glb
-rw-rw-r-- 1 jbutlin expl 8044 Sep 30 2003 /data/lgc3/basin_mas/2-V5__________________________cnc16000101.2v2_glb
-rw-rw-r-- 1 33682 expl 1296 Oct 7 2003 /data/lgc8/basin_mas/2-V5__________________________WABAMUN_new_________________________________________________.hzd_glb
-rw-rw-r-- 1 33682 expl 1296 Oct 14 2003 /data/lgc8/basin_mas/2-V5__________________________LEDUC_______________________________________________________.hzd_glb
-rw-rw-r-- 1 33682 expl 1296 Oct 14 2003 /data/lgc8/basin_mas/2-V5__________________________WABAMUN_reg_________________________________________________.hzd_glb
-rw-rw-r-- 1 33682 expl 8044 Aug 25 2004 /data/lgc8/basin_mas/2-V5__________________________reg16tied01.2v2_glb
-rw-rw-r-- 1 33682 expl 924876 Oct 14 2003 /data/lgc8/basin_mas/2-V5__________________________reg16tied02.2v2_glb
-rw-rw-r-- 1 34124 expl 1296 May 4 2004 /data/lgc8/basin_mas/2-V5__________________________MH_Nordegg__________________________________________________.hzd_glb
-rw-rw-r-- 1 34124 expl 1296 Jul 14 2003 /data/lgc8/basin_mas/2-V5__________________________MH_Wabamun__________________________________________________.hzd_glb
-rw-rw-r-- 1 34124 expl 1296 Aug 28 2003 /data/lgc8/basin_mas/2-V5__________________________REG_WABAMUN_________________________________________________.hzd_glb
-rw-rw-r-- 1 33682 expl 1296 Oct 9 2003 /data/lgc9/basin_mas/2-V5__________________________WABAMUN_____________________________________________________.hzd_glb


Suggestions welcome.