In /usr/bin/yaz-config line 22: YAZVERSION=$VERSION ^--------^ SC2034: YAZVERSION appears unused. Verify use (or export if used externally). In /usr/bin/yaz-config line 40: exit $1 ^-- SC2086: Double quote to prevent globbing and word splitting. Did you mean: exit "$1" In /usr/bin/yaz-config line 45: -*=*) optarg=`echo "$1" | sed 's/[-_a-zA-Z0-9]*=//'` ;; ^-- SC2006: Use $(...) notation instead of legacy backticked `...`. Did you mean: -*=*) optarg=$(echo "$1" | sed 's/[-_a-zA-Z0-9]*=//') ;; In /usr/bin/yaz-config line 54: echo $prefix ^-----^ SC2086: Double quote to prevent globbing and word splitting. Did you mean: echo "$prefix" In /usr/bin/yaz-config line 148: YAZBIN=${prefix}/bin ^----^ SC2034: YAZBIN appears unused. Verify use (or export if used externally). In /usr/bin/yaz-config line 175: echo $YAZINC ^-----^ SC2086: Double quote to prevent globbing and word splitting. Did you mean: echo "$YAZINC" In /usr/bin/yaz-config line 178: echo $YAZLIB ^-----^ SC2086: Double quote to prevent globbing and word splitting. Did you mean: echo "$YAZLIB" In /usr/bin/yaz-config line 181: echo $YAZLALIB ^-------^ SC2086: Double quote to prevent globbing and word splitting. Did you mean: echo "$YAZLALIB" For more information: https://www.shellcheck.net/wiki/SC2034 -- YAZBIN appears unused. Verify use... https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ... https://www.shellcheck.net/wiki/SC2006 -- Use $(...) notation instead of le...