用于选择要压缩/解压缩的文件的 Bash 脚本

用于选择要压缩/解压缩的文件的 Bash 脚本

我正在尝试使用 bash 脚本压缩和解压缩文件,但我是新手,遇到了问题。我将解释该脚本当前的作用,然后解释我希望它做什么。

  • 用户选择“压缩”:出现一个文件对话框,显示所有文件。用户选择一个文件(例如/home/ubuntu/file.txt)。该文件被压缩并保存/home/ubuntufile.zip包含 /home/ubuntu/file.txt.

  • 用户选择“解压缩”:出现一个文件对话框,显示所有文件。用户选择一个文件(例如/home/ubuntu/file.zip。该文件被
    解压缩。

现在我想从脚本中执行以下操作:

  1. 压缩文件后,我希望该压缩文件的目录相同。例如,对于/home/ubuntu/filename.txt,我希望将其保存在/home/ubuntu/as中filename.zip。我希望它只包含filename.txtinside 而不是/home/ubuntu/filename.txt or home/ubuntu/filename.txt
  2. 解压缩时,我希望文件对话框仅显示*.zip文件,以便用户无法选择未压缩的文件。
  3. 解压时,我想知道文件保存在哪里。

这是我的代码:

#! /bin/bash
#This bash compresses and decompresses files
act=-1 #A variable used to transfer which action has been  chosen
action1="Compress"  
action2="Decompress"  #action1 & 2 both used for certain echoes

function menu { #The menu
    clear
    local title="-------Menu-------"
    local prompt="Please choose an action:"
    local options=("$action1" "$action2" "Quit")

    echo "$title"
    PS3="$prompt" #Changes the default '#?' that the select command uses to $prompt.
    select option in "${options[@]}";do

        case $option in

            ${options[0]})
            echo "You chose $option"
            act=0 #Changes act to 0 , to be used later      
            break   
            ;;

            ${options[1]})
            echo "You chose $option"
            act=1 #Changes act to 1 , to be used later              
            break;
            ;;
            ${options[2]}) 
            echo "You chose $option"
            exit
            ;;
            *)
            echo "Invalid option please choose between 1-3"
            ;;
        esac
        break
    done
}

function ynPrompt { #a y/n prompt to go back to the main menu or exit
    while true #helps to loop the y/n prompt in case of wrong input ex. a343
    do  

        read -r -p "Do you want to go back to the menu? [y/N] " response
        case $response in

             [yY][eE][sS]|[yY]) #accepts yes or y and ignores casing ex. yEs is accepted.
             continue 2     #continues the outer control loop
             ;;
             [nN][oO]|[nN])     #accepts no or n and ignores casing ex. nO is accepted.     
             exit           #exits the script   
             ;;
             *)
             continue           #shows the message again
            ;;      
        esac
        break
    done
}

function main { #Performs the selected action
    if [ $act -eq 0 ]; then

        if zip -r ${path}.zip ${path}   
        then echo Compression successful
        echo $? #prints 0 
        else echo $? 
        fi


        #echo "$action1"
        #zip -r ${path}.zip ${path}

    elif [ $act -eq 1 ]; then

        if unzip ${path} 
        then echo Decompression successful
        echo ${path}
        echo $? #prints 0
        else echo $?
        fi

        #echo "$action2"
        #unzip ${path}


    else 
        echo "$error"
    fi

}



#~~~~~~~~~~~~ Script start ~~~~~~~~~~~~~~~~
while true #outer control loop
    do
    menu #call menu
    cd /home
    path=$(zenity --file-selection) #Stores the path of the file into path variable through zenity dialog 
#path can only be .zip if i had --file filter *.zip

    if [ -z $path ]; then  #checks length of $path , returns true if length = 0 
        ynPrompt #call ynprompt
    else
        main     #call main
    fi

    break
done

答案1

您可以使用它进行压缩:

compress_file () 
{
    local dir file
    test -f "$1" || return 2
    dir="$(readlink -f "$1")"
    file="${dir##*/}"
    dir="${dir%/*}"
    cd "$dir"
    # check whether target file exists:
    # test -f "$file".zip && : whatever
    echo zip "$file".zip "$file"
}

compress_file /path/to/file

选择解压文件

我不熟悉zenity。好像不能过滤文件。您可以通过创建一个临时目录、仅将*.zip文件链接到其中并zenity针对该目录运行来达到所需的效果。当然,如果用户选择不同的目录,那么他将看到所有文件。

zipfile_dialog () 
{
    local file startdir="/home/ubuntu" tmpdirname=.zipscript.$$
    cd "$startdir" || return 2
    test -d "$tmpdirname" && { rm -r "$tmpdirname" || return 2; }
    mkdir -p "$tmpdirname" || return 2
    for file in *.zip; do
        cd "$tmpdirname"
        ln -s ../"$file"
        cd ..
    done
    ls "$tmpdirname"
    # call zenity here
    rm -r "$tmpdirname"
}

zipfile_dialog

另一种方法是使用 shell 进行文件选择。如果您可以选择的话,可以通过可编程完成来完成(completecompgen)。

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