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bash arguments parsing

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Guisardo answered on August 4, 2020 Popularity 7/10 Helpfulness 5/10

answer bash arguments parsing

related shell parse command line arguments

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bash arguments parsing

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#!/bin/bash

SHORT=c:,d:,h
LONG=city1:,city2:,help
OPTS=$(getopt -a -n weather --options $SHORT --longoptions $LONG -- "$@")

eval set -- "$OPTS"

while :
do
  case "$1" in
    -c | --city1 )
      city1="$2"
      shift 2
      ;;
    -d | --city2 )
      city2="$2"
      shift 2
      ;;
    -h | --help)
      "This is a weather script"
      exit 2
      ;;
    --)
      shift;
      break
      ;;
    *)
      echo "Unexpected option: $1"
      ;;
  esac
done

echo $city1, $city2

Popularity 7/10 Helpfulness 5/10 Language shell

Source: stackabuse.com

Tags: arguments bash parsing shell

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Contributed on Jul 29 2022

Guisardo

0 Answers Avg Quality 2/10

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shell parse command line arguments

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cat >/tmp/demo-space-separated.sh <<'EOF'
#!/bin/bash

POSITIONAL_ARGS=()

while [[ $# -gt 0 ]]; do
  case $1 in
    -e|--extension)
      EXTENSION="$2"
      shift # past argument
      shift # past value
      ;;
    -s|--searchpath)
      SEARCHPATH="$2"
      shift # past argument
      shift # past value
      ;;
    --default)
      DEFAULT=YES
      shift # past argument
      ;;
    -*|--*)
      echo "Unknown option $1"
      exit 1
      ;;
    *)
      POSITIONAL_ARGS+=("$1") # save positional arg
      shift # past argument
      ;;
  esac
done

set -- "${POSITIONAL_ARGS[@]}" # restore positional parameters

echo "FILE EXTENSION  = ${EXTENSION}"
echo "SEARCH PATH     = ${SEARCHPATH}"
echo "DEFAULT         = ${DEFAULT}"
echo "Number files in SEARCH PATH with EXTENSION:" $(ls -1 "${SEARCHPATH}"/*."${EXTENSION}" | wc -l)

if [[ -n $1 ]]; then
    echo "Last line of file specified as non-opt/last argument:"
    tail -1 "$1"
fi
EOF

chmod +x /tmp/demo-space-separated.sh

/tmp/demo-space-separated.sh -e conf -s /etc /etc/hosts

Popularity 9/10 Helpfulness 4/10 Language shell

Source: stackoverflow.com

Tags: arguments argu

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Contributed on Oct 19 2022

Gentle Grouse

0 Answers Avg Quality 2/10

bash parse arguments

Comment

#!/bin/bash

SHORT=c:,d:,h
LONG=city1:,city2:,help
OPTS=$(getopt --alternative --name weather --options $SHORT --longoptions $LONG -- "$@")

Popularity 9/10 Helpfulness 3/10 Language shell

Source: stackabuse.com

Tags: arguments argu

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Contributed on Jun 15 2022

Tiago F2

0 Answers Avg Quality 2/10

bash argument parsing

Comment

-1

cat >/tmp/demo-space-separated.sh <<'EOF'
#!/bin/bash

POSITIONAL=()
while [[ $# -gt 0 ]]
do
key="$1"

case $key in
    -e|--extension)
    EXTENSION="$2"
    shift # past argument
    shift # past value
    ;;
    -s|--searchpath)
    SEARCHPATH="$2"
    shift # past argument
    shift # past value
    ;;
    -l|--lib)
    LIBPATH="$2"
    shift # past argument
    shift # past value
    ;;
    --default)
    DEFAULT=YES
    shift # past argument
    ;;
    *)    # unknown option
    POSITIONAL+=("$1") # save it in an array for later
    shift # past argument
    ;;
esac
done
set -- "${POSITIONAL[@]}" # restore positional parameters

echo "FILE EXTENSION  = ${EXTENSION}"
echo "SEARCH PATH     = ${SEARCHPATH}"
echo "LIBRARY PATH    = ${LIBPATH}"
echo "DEFAULT         = ${DEFAULT}"
echo "Number files in SEARCH PATH with EXTENSION:" $(ls -1 "${SEARCHPATH}"/*."${EXTENSION}" | wc -l)
if [[ -n $1 ]]; then
    echo "Last line of file specified as non-opt/last argument:"
    tail -1 "$1"
fi
EOF

chmod +x /tmp/demo-space-separated.sh

/tmp/demo-space-separated.sh -e conf -s /etc -l /usr/lib /etc/hosts

Popularity 9/10 Helpfulness 1/10 Language shell

Source: stackoverflow.com

Tags: bash

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Contributed on Aug 04 2020

Kind Kouprey

0 Answers Avg Quality 2/10

bash arguments parsing

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