In /usr/bin/nspr-config line 30: exit $1 ^-- SC2086: Double quote to prevent globbing and word splitting. Did you mean: exit "$1" In /usr/bin/nspr-config line 43: -*=*) 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/nspr-config line 109: echo $prefix ^-----^ SC2086: Double quote to prevent globbing and word splitting. Did you mean: echo "$prefix" In /usr/bin/nspr-config line 113: echo $exec_prefix ^----------^ SC2086: Double quote to prevent globbing and word splitting. Did you mean: echo "$exec_prefix" In /usr/bin/nspr-config line 141: if echo $i | grep \^-L >/dev/null; then ^-- SC2086: Double quote to prevent globbing and word splitting. ^-- SC1001: This \^ will be a regular '^' in this context. Did you mean: if echo "$i" | grep \^-L >/dev/null; then In /usr/bin/nspr-config line 145: echo $libdirs -lpthread -ldl ^------^ SC2086: Double quote to prevent globbing and word splitting. Did you mean: echo "$libdirs" -lpthread -ldl For more information: https://www.shellcheck.net/wiki/SC1001 -- This \^ will be a regular '^' in ... https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ... https://www.shellcheck.net/wiki/SC2006 -- Use $(...) notation instead of le...