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https://git.disroot.org/FollieHiyuki/dotfiles.git
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217 lines
8.3 KiB
Bash
Executable File
217 lines
8.3 KiB
Bash
Executable File
#!/usr/bin/env sh
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#
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# by Siddharth Dushantha
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#
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VERSION="1.0.0"
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# Everything related to 'tmpsms' will be stored in this directory. Once the
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# computer get restarted, this directory gets deleted.
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TMPSMS_DIR="/tmp/tmpsms"
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# The phone number that the user has selected gets stored in this file so that
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# the do not have reselect at ever run.
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TMPSMS_PHONE_NUMBER="$TMPSMS_DIR/phonenumber.txt"
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# 'fzf' is used to allow the user to select a phone number. This variable
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# stores extra arguments which the user might to provide, so that 'fzf'
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# behaves to their liking.
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FZF_ARGUMENTS=""
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# The temporary SMS service is provided by Upmasked
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API="https://upmasked.com"
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usage(){
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# Using 'cat << EOF' we can easily output a multiline text. This is much
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# better than using 'echo' for each line or using '\n' to create a new line.
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cat <<EOF
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tmpsms [--count <count>]
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tmpsms init [--fzf <arguments>]
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tmpsms -h | --version
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When called with no options or commands, tmpsms lists
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the 3 newest messages.
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Options
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-h, --help Show this help message
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-c, --count Only show the <count> newest messages
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--version Show version
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Commands
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init Initialize a new phone number by selecting one
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from the available ones using 'fzf'
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--fzf Extra arguments to use for 'fzf'
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EOF
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}
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print_error(){
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# Print error message
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#
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# The first argument provided to this function will be the error message.
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# Script will exit after printing the error message.
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printf "%s\n" "Error: $1" >&2
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exit 1
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}
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select_phone_number(){
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# There are 2 ways which this function is called in this script.
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# [1] The user wants to initilize a new phone number by running 'tmpsms init'
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# [2] The user runs 'tmpsms' to check for new messages, but $TMPSMS_PHONE_NUMBER
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# does't exist. Therefore they have to select phone number before we can
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# show them the messages.
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#
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# When the function 'select_phone_number()' is called with the argument 'true'
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# that means this function was called becaues the user ran 'tmpsms init'
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#
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# We need this variable so we can know whether or not we need to show the user
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# the phone number they have selected. If they ran 'tmpsms init', then we will
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# show them the phone number they selected. This is so that they can easily
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# copy and paste it to whatever site that needs the phone number.
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EXTERNALLY=${1:-false}
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# Fetch the available phone numbers
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DATA=$(curl -s "$API/api/sms/numbers")
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# Using 'jq' we are able to get the length of the JSON data retreived from
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# API. The length indicates the the total number of phone numbers available.
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DATA_LENGTH=$(printf %s "$DATA" | jq length)
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# This is where we store the phone numbers which then gets shown to the user
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# through 'fzf' so that they can select one.
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PHONE_NUMBERS=""
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index=1
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while [ $index -le "$DATA_LENGTH" ]; do
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# Since arrays in JSON data start at 0, we must subtract
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# the value of $index by 1 so that we dont miss one of the
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# phone numbers in the array
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PHONE_NUMBER_INFO=$(printf %s "$DATA" | jq -r ".[$index-1]")
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PHONE_NUMBER=$(printf %s "$PHONE_NUMBER_INFO" | jq -r ".number")
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COUNTRY_CODE=$(printf %s "$PHONE_NUMBER_INFO" | jq -r ".country")
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PHONE_NUMBERS="$PHONE_NUMBERS$COUNTRY_CODE +$PHONE_NUMBER\n"
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index=$((index+1))
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done
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# By default we use 'fzf' without any arguments in order to display the
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# phone numbers they can use. If the '--fzf' argument is passed along with
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# 'fzf' arguments, 'tmpsms' will make sure to use them.
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FZF_COMMAND="fzf"
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[ -n "$FZF_ARGUMENTS" ] && FZF_COMMAND="fzf $FZF_ARGUMENTS"
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# If the user did not select a phone number then quit 'tmpsms' as the
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# user might have just wanted to check if there were any new number
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# that they could use.
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SELECTION=$(printf %b "$PHONE_NUMBERS" | $FZF_COMMAND)
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[ -z "$SELECTION" ] && print_error "Phone number was not selected"
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# Store the selected phone number in $TMPSMS_PHONE_NUMBER for later use
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printf %s "$SELECTION" > "$TMPSMS_PHONE_NUMBER"
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# If the user ran 'tmpsms init', then show them their selection
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[ "$EXTERNALLY" = true ] && printf "%s\n" "$SELECTION"
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}
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list_messages(){
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# By default, the 3 newest messages are shown. But if the user would like
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# to see more of the messages, they can provide how many they want to see
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# by using the '--count' option.
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COUNT="${1:-3}"
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# The provided value to '--count' must be an interger. We can verify that it is
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# an integer by checking if $COUNT matches the regex.
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REGEX='^[0-9]+$'
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if ! printf %s "$COUNT" | grep -Eq "$REGEX";then
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print_error "'$COUNT' is not an integer"
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fi
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# If /tmp/tmpsms/phonenumber.txt does not exist or is empty that means that
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# the user has not initialized a phone number yet.
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[ ! -s "$TMPSMS_PHONE_NUMBER" ] && print_error "A phone number must be initilzied in order to view the messages"
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# The country code is needed because it gets displayed to the user. It may
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# be useful for the user to know which country the phone number is from
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# so that they dont have to guess by looking at the area code.
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COUNTRY_CODE=$(awk -F" " '{print $1}' < $TMPSMS_PHONE_NUMBER)
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PHONE_NUMBER=$(awk -F"+" '{print $2}' < $TMPSMS_PHONE_NUMBER)
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DATA=$(curl -s "$API/api/sms/messages/$PHONE_NUMBER")
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# Even though we are using the phone numbers that are available on
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# upmasked.com, there is a chance that they might remove one of the numbers.
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# The checking needs to be done in case the phone number that is stored in
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# $TMPSMS_PHONE_NUMBER has been removed.
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if printf %s "$DATA" | grep -Eq "Not Found"; then
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print_error "Looks like the phone number '+$PHONE_NUMBER' no longer exists. Initialize a new one and try again."
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fi
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DATA_LENGTH=$(printf %s "$DATA" | jq length)
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# If the number of messages the user wants to view is greater than the
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# number of messages that are available, then make sure to show
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# all the messages that are available.
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[ "$COUNT" -gt "$DATA_LENGTH" ] && COUNT="$DATA_LENGTH"
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# Show a nice little header before showing the messages
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printf "%s\n\n" "[ Messages for +$PHONE_NUMBER ($COUNTRY_CODE) ]"
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# All the messages get stored in here
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MESSAGES=""
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index=1
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while [ $index -le "$COUNT" ]; do
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# Since arrays in JSON data start at 0, we must subtract
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# the value of $index by 1 so that we dont miss one of the
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# messages in the array
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MESSAGE_DATA=$(printf %s "$DATA" | jq -r ".[$index-1]")
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BODY=$(printf %s "$MESSAGE_DATA" | jq -r ".body" | tr "\n" " ")
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SENDER=$(printf %s "$MESSAGE_DATA" | jq -r ".originator")
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# The '||' is used as a divider for 'column'. 'column' will use this
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# divider as a point of reference to create the division. By default
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# 'column' uses a blank space but that would not work in our case as the
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# message could have multiple white spaces and 'column' would
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# split the words that are seperated by white space, in different columns.
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MESSAGES="$MESSAGES$SENDER ||$BODY\n"
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index=$((index+1))
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done
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# Show the messages cleanly
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printf "%b" "$MESSAGES" | column -t -s "||"
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}
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main(){
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# Iterate the array of dependencies and check if the user has them installed.
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for dependency in jq curl fzf; do
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if ! command -v "$dependency" >/dev/null 2>&1; then
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print_error "Could not find '$dependency', is it installed?"
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fi
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done
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# Create the $TMPSMS_DIR directory and dont throw any errors
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# if it already exists
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mkdir -p "$TMPSMS_DIR"
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# If no arguments are provided just show the messages
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[ $# -eq 0 ] && list_messages && exit 0
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while [ "$1" ]; do
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case "$1" in
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init)
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case "$2" in
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--fzf) FZF_ARGUMENTS="$3" && select_phone_number true ;;
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"") select_phone_number true ;;
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esac ;;
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--help | -h) usage && exit ;;
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--count | -c) list_messages "$2" && shift 2;;
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--version) printf %s "$VERSION" && exit ;;
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-*) print_error "option '$1' does not exist" ;;
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*) print_error "command '$1' does not exist" ;;
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esac
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shift
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done
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}
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main "$@"
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