In /usr/bin/quilt line 20: : ${QUILT_DIR=/usr/share/quilt} ^---------------------------^ SC2223: This default assignment may cause DoS due to globbing. Quote it. In /usr/bin/quilt line 26: [ -e $QUILTRC ] && break ^------^ SC2086: Double quote to prevent globbing and word splitting. Did you mean: [ -e "$QUILTRC" ] && break In /usr/bin/quilt line 69: for command in $QUILT_DIR/* ^--------^ SC2231: Quote expansions in this for loop glob to prevent wordsplitting, e.g. "$dir"/*.txt . In /usr/bin/quilt line 71: if [ -f "$command" -a -x "$command" ] ^-- SC2166: Prefer [ p ] && [ q ] as [ p -a q ] is not well defined. In /usr/bin/quilt line 73: echo ${command##$QUILT_DIR/} ^---------------------^ SC2086: Double quote to prevent globbing and word splitting. Did you mean: echo "${command##$QUILT_DIR/}" In /usr/bin/quilt line 78: if [ $# -eq 1 -a "$1" == "--version" ] ^-- SC2166: Prefer [ p ] && [ q ] as [ p -a q ] is not well defined. In /usr/bin/quilt line 121: if ! [ -f "$QUILT_DIR/$command" -a -x "$QUILT_DIR/$command" ] ^-- SC2166: Prefer [ p ] && [ q ] as [ p -a q ] is not well defined. For more information: https://www.shellcheck.net/wiki/SC2166 -- Prefer [ p ] && [ q ] as [ p -a q... https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ... https://www.shellcheck.net/wiki/SC2223 -- This default assignment may cause...