我正在为 Docker 环境编写一个脚本，但我有点陷入了自己陷入的困境中。
#!/bin/bash
set -euo pipefail
# Variables
gituser="modem7"
gitrepo="docker-devenv"
gitfolder="Environments"
buildername="DockerDevBuilder"
# Colours
RED="\e[31m"
GREEN="\e[32m"
END="\e[0m"
echo "========================================="
printf " Checking Dependencies\n"
echo "========================================="
printf "Checking if dependencies are installed...\n"
pkg_list=(docker jq)
tc() { set ${*,,} ; echo ${*^} ; }
for pkg in "${pkg_list[@]}"
do
titlecase=$(tc $pkg)
isinstalled=$(dpkg-query -l $pkg > /dev/null 2>&1)
if [ $? -eq 0 ];
then
printf "~ $titlecase is...${GREEN}installed${END}\n"
else
printf "~ $titlecase is...${RED}not installed${END}\n"
printf "Exiting Script. Install $pkg.\n"
echo "========================================="
exit
fi
done
echo "========================================="
cat << "EOF"
____ _
| _ \ ___ ___| | _____ _ __
| | | |/ _ \ / __| |/ / _ | '__|
| |_| | (_) | (__| | __| |
|____/ \___/ \___|_|\_\___|_|
=========================================
EOF
PS3="Choose Option: "
dev_list=($(curl -fks https://api.github.com/repos/$gituser/$gitrepo/contents/$gitfolder | jq '. [] | .name' | tr -d '[]," '))
dev_list_array="${dev_list[*]}"
dev_list_array_pipe="${dev_list_array// /|}"
dev_list+=( "Prune" "Quit" )
echo -e "\nSelect an option:\n"
select dev_name in "${dev_list[@]}"; do
echo -e "\nYou've selected ${GREEN}${dev_name}${END}\n"
lowerdev=$(echo $dev_name | tr '[:upper:]' '[:lower:]')
eval "case \"$dev_name\" in
"$dev_list_array_pipe")
echo "Creating buildx builder..."
if docker buildx create --use --name "$buildername" > /dev/null 2>&1; then
echo ""
echo "Builder $buildername created"
else
echo "Builder already created, using $buildername"
docker buildx use "DockerDevBuilder"
echo ""
fi
echo "Creating $dev_name Environment..."
docker buildx build --rm=true --build-arg BUILDKIT_INLINE_CACHE=1 --load -t $lowerdev:dev https://github.com/$gituser/$gitrepo.git#:$gitfolder/$dev_name \
&& clear \
&& echo "=========================================" \
&& echo "Activating $dev_name Dev Environment..." \
&& echo "Press CTRL + D or type exit to leave the container" \
&& docker run --rm -it --name "$dev_name"Dev"$RANDOM" --hostname "$dev_name"Dev"$RANDOM" "$lowerdev:dev"
break
;;
"Prune")
echo "Clearing Docker cache..."
docker system prune -af
echo ""
echo "Removing Docker buildx builder..."
if docker buildx rm "$buildername" > /dev/null 2>&1; then
echo ""
echo "Builder $buildername removed"
else
echo "Builder already removed, no action performed"
echo ""
fi
exec bash $0
;;
"Quit")
echo "Exiting script"
exit
;;
*)
echo "invalid option $REPLY"
;;
esac"
done
exit 0
我目前正在使用“ eval "case \"$dev_name\" in”，但从我读到的内容来看，这似乎有问题。
它确实有效，但我不确定是否有更好的方法来实现这样的结果。
这些选项是根据文件夹名称创建的回购协议，但我不太确定如何摆脱使用 eval。我是否在担心一些毫无意义的事情？
答案1
通过以下更改解决了此问题：
#!/bin/bash
set -euo pipefail
shopt -s extglob
# Variables
gituser="modem7"
gitrepo="docker-devenv"
gitfolder="Environments"
buildername="DockerDevBuilder"
failuremsg=""
# Colours
RED="\e[31m"
GREEN="\e[32m"
END="\e[0m"
echo "========================================="
printf " Checking Dependencies\n"
echo "========================================="
printf "Checking if dependencies are installed...\n"
pkg_list=(docker jq)
tc() { set ${*,,} ; echo ${*^} ; }
for pkg in "${pkg_list[@]}"
do
titlecase=$(tc $pkg)
isinstalled=$(dpkg-query -l $pkg > /dev/null 2>&1)
if [ $? -eq 0 ];
then
printf "~ $titlecase is...${GREEN}installed${END}\n"
else
printf "~ $titlecase is...${RED}not installed${END}\n"
printf "Exiting Script. Install $pkg.\n"
echo "========================================="
exit
fi
done
echo "========================================="
cat << "EOF"
____ _
| _ \ ___ ___| | _____ _ __
| | | |/ _ \ / __| |/ / _ | `__|
| |_| | (_) | (__| | __| |
|____/ \___/ \___|_|\_\___|_|
=========================================
EOF
ctrl_c () {
echo -e "\nUser pressed Ctrl + C. Exiting script...\n"
exit 1
}
# Trap CTRL+C
trap ctrl_c INT
PS3="Choose Option: "
dev_list=($(curl -fks https://api.github.com/repos/$gituser/$gitrepo/contents/$gitfolder | jq '. [] | .name' | tr -d '[]," '))
dev_env_options=${dev_list[0]};
for ((i=1; i<${#dev_list[@]}; i++)); do
dev_env_options="$dev_env_options|${dev_list[i]}"
done
echo -e "\nSelect an option:\n"
select dev_name in "${dev_list[@]}" "Prune" "Quit"; do
echo -e "\nYou've selected ${GREEN}${dev_name}${END}\n"
lowerdev=$(echo $dev_name | tr '[:upper:]' '[:lower:]')
case $dev_name in
+($dev_env_options))
echo "Creating buildx builder..."
if docker buildx create --use --name "$buildername" > /dev/null 2>&1; then
echo -e "\nBuilder $buildername created..."
else
echo -e "Builder already created, using "$buildername"...\n"
docker buildx use "$buildername"
fi
echo "Creating $dev_name Environment..."
docker buildx build --rm=true --build-arg BUILDKIT_INLINE_CACHE=1 --load -t $lowerdev:dev https://github.com/$gituser/$gitrepo.git#:$gitfolder/$dev_name
clear
echo "========================================="
echo "Activating $dev_name Dev Environment..."
echo "Press CTRL + D or type exit to leave the container"
docker run --rm -it --name "$dev_name"Dev"$RANDOM" --hostname "$dev_name"Dev"$RANDOM" "$lowerdev:dev" & dockerrun_pid=$!
break
;;
"Prune")
echo "Clearing Docker cache..."
docker system prune -af
echo -e "\nRemoving Docker buildx builder..."
if docker buildx rm "$buildername" > /dev/null 2>&1; then
echo -e "\nBuilder $buildername removed"
else
echo -e "Builder already removed, no action performed\n"
fi
exec bash $0
;;
"Quit")
echo "Exiting script..."
break
;;
*)
echo "Invalid option $REPLY"
exec bash $0
;;
esac
done
exit 0