为什么我在网上找不到关于此命令的任何内容？`statftime`

问题：

我正在bash从书中学习（Linux Shell Scripting with Bash，Ken​​ O. Burch），我现在关注的这本书正在使用这个命令：

/usr/bin/statftime

但是我找不到适用于我的 Linux 的这个命令

我正在使用 Debian 9.0 stretch

问题：

你能告诉我这个命令吗？是否可以在 Debian 上安装它以及如何在 Debian 上安装它？

编辑：

bash这本书是我读过的最好的书之一（Linux Shell Scripting with Bash，Ken​​ O. Burch）（@Gilles）所以这可能不是一个技巧，我将在下面发布代码：

这是代码：

#!/bin/bash -x
#
# polling.sh: a daemon using polling to check for new files

shopt -s -o nounset

declare -rx SCRIPT=${0##*/}
declare -rx INCOMING_FTP_DIR="/home/ftp/ftp_incoming"
declare -rx PROCESSING_DIR="/home/ftp/processing"
declare -rx statftime="/usr/local/bin/statftime"
declare FILE=""
declare FILES=""
declare NEW_FILE=""

printf "$SCRIPT started at %s\n" "`date`"

# Sanity checks
if [[ ! -d /home/ftp/ftp_incoming ]] || [[ ! -d /home/ftp/processing ]]
then
    mkdir -p /home/ftp/ftp_incoming
    mkdir -p /home/ftp/processing
    if [ "$?" -ne 0 ]
    then
        echo "You are a idiot"
    else
        echo "You succeded!"
    fi
fi
if test ! -r "$INCOMING_FTP_DIR"
then
    printf "%s\n" "$SCRIPT:$LINENO: unable to read the incoming directory --aborted" >&1
    exit 1
fi
if test ! -r "$PROCESSING_DIR"
then
    printf "%s\n" "$SCRIPT:$LINENO: unable to read the incoming directory --aborted" >&1
    exit 1
fi
if test ! -r "$statftime"
then
    printf "%s\n" "$SCRIPT:$LINENO: unable to find or execute $statftime --aborted" >&1
    exit 1
fi

# Poll for new FTP files

cd $INCOMING_FTP_DIR
while true
do
    #check for new files more than 30 minutes unchanged
    FILES=`find . -type f -mmin +30 -print`

    # If new files exist, move them to the processing directory

    if [ ! -z "$FILES" ]
    then
        printf "$SCRIPT: new files have arrived at %s\n" "`date`"
        printf "%s\n" "$FILES" |
        {
            while read FILE
            do
                # Remove leading "./"
                FILE=${FILE##*/}
                # Rename the file with the current time
                NEW_FILE=`$statftime -f "%_L%_a_%T.dat" "$FILE"`
                if [ -z "$NEW_FILE" ]
                then
                    printf "%s\n" "$SCRIPT:$LINENO: statftime failed to create a new filename--skipping"
                else
                    # Move the file to the processing directory
                    printf "%s\n" "$SCRIPT: moved $FILE to $PROCESSING_DIR/$NEW_FILE"
                    mv "$FILE" "$PROCESSING_DIR/$NEW_FILE"
                fi
            done
        }
    fi
    sleep 30
done


printf "$SCRIPT finished unexpectedly at %s\n" "`date`"
exit 1

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