我如何找到一个Bash脚本位于该脚本内部的目录的路径?
我想用Bash脚本作为另一个应用程序的启动器,我想将工作目录更改为Bash脚本所在的目录,所以我可以在该目录中的文件上运行,如下:
$ ./application
当前回答
這是我多年來創造的,用作我的Bash寫作的標題:
## BASE BRAIN - Get where you're from and who you are.
MYPID=$$
ORIGINAL_DIR="$(pwd)" # This is not a hot air balloon ride..
fa="$0" # First Assumption
ta= # Temporary Assumption
wa= # Weighed Assumption
while true; do
[ "${fa:0:1}" = "/" ] && wa=$0 && break
[ "${fa:0:2}" = "./" ] && ta="${ORIGINAL_DIR}/${fa:2}" && [ -e "$ta" ] && wa="$ta" && break
ta="${ORIGINAL_DIR}/${fa}" && [ -e "$ta" ] && wa="$ta" && break
done
SW="$wa"
SWDIR="$(dirname "$wa")"
SWBIN="$(basename "$wa")"
unset ta fa wa
( [ ! -e "$SWDIR/$SWBIN" ] || [ -z "$SW" ] ) && echo "I could not find my way around :( possible bug in the TOP script" && exit 1
此时此刻,您的变量 SW、SWDIR 和 SWBIN 包含您需要的内容。
其他回答
简短答案:
"`dirname -- "$0";`"
或(最好是):
"$( dirname -- "$0"; )"
您可以从脚本本身中获取一个Bash脚本的源目录,随之而来:
script_path=$(dirname "$(readlink -f "$0")")"/"
echo "$script_path"
样品输出:
/home/username/desktop/
我用三种不同的处决尝试了追踪。
echo $(实际上是 $_)
. application # /correct/path/to/dir or /path/to/temporary_dir
bash application # /path/to/bash
/PATH/TO/application # /correct/path/to/dir
echo $(相当于 $(相当于 $0))
. application # failed with `realpath: missing operand`
bash application # /correct/path/to/dir
/PATH/TO/application # /correct/path/to/dir
echo $(相当于 $BASH_SOURCE)
$BASH_SOURCE 基本上与 ${BASH_SOURCE[0]} 相同。
. application # /correct/path/to/dir
bash application # /correct/path/to/dir
/PATH/TO/application # /correct/path/to/dir
只有$(实际上是$BASH_SOURCE)似乎是可靠的。
您可以做到这一点,只需将脚本名称($0)与 realpath 和/或 dirname 相结合,它适用于 Bash 和 Shell。
#!/usr/bin/env bash
RELATIVE_PATH="${0}"
RELATIVE_DIR_PATH="$(dirname "${0}")"
FULL_DIR_PATH="$(realpath "${0}" | xargs dirname)"
FULL_PATH="$(realpath "${0}")"
echo "RELATIVE_PATH->${RELATIVE_PATH}<-"
echo "RELATIVE_DIR_PATH->${RELATIVE_DIR_PATH}<-"
echo "FULL_DIR_PATH->${FULL_DIR_PATH}<-"
echo "FULL_PATH->${FULL_PATH}<-"
结果将是这样的:
# RELATIVE_PATH->./bin/startup.sh<-
# RELATIVE_DIR_PATH->./bin<-
# FULL_DIR_PATH->/opt/my_app/bin<-
# FULL_PATH->/opt/my_app/bin/startup.sh<-
$0 是脚本本身的名称
4.4 特殊变量类型
例如:LozanoMatheus/get_script_paths.sh
如果你的Bash脚本是一个同链接,那么这就是如何做到这一点:
#!/usr/bin/env bash
dirn="$(dirname "$0")"
rl="$(readlink "$0")";
exec_dir="$(dirname $(dirname "$rl"))";
my_path="$dirn/$exec_dir";
X="$(cd $(dirname ${my_path}) && pwd)/$(basename ${my_path})"
X 是包含您的 Bash 脚本的目录(原始文件,而不是同链接)。我向上帝发誓这项工作,这是我唯一知道如何正确地做到这一点。
