echo "$(basename "`test -L ${BASH_SOURCE[0]} \
                   && readlink ${BASH_SOURCE[0]} \
                   || echo ${BASH_SOURCE[0]}`")"

this="$(dirname "$(realpath "$BASH_SOURCE")")"

这将解析符号链接(realpath会这样做)，处理空格(双引号会这样做)，并将找到当前脚本名称，即使是在来源(. ./myscript)或被其他脚本调用时($BASH_SOURCE会这样做)。在所有这些之后，最好将其保存在环境变量中以便重用或方便复制到其他地方(this=)…

如果脚本名中有空格，更可靠的方法是使用"$0"或"$(basename "$0")"-或MacOS: "$(basename \"$0\")"。这可以防止名称以任何方式被破坏或解释。一般来说，在shell中始终使用双引号作为变量名是一种良好的实践。

感谢Bill Hernandez提供的信息。我增加了一些我正在采用的偏好。

#!/bin/bash
function Usage(){
    echo " Usage: show_parameters [ arg1 ][ arg2 ]"
}
[[ ${#2} -eq 0 ]] && Usage || {
    echo
    echo "# arguments called with ---->  ${@}     "
    echo "# \$1 ----------------------->  $1       "
    echo "# \$2 ----------------------->  $2       "
    echo "# path to me --------------->  ${0}     " | sed "s/$USER/\$USER/g"
    echo "# parent path -------------->  ${0%/*}  " | sed "s/$USER/\$USER/g"
    echo "# my name ------------------>  ${0##*/} "
    echo
}

干杯

使用bash >= 3，以下工作:

$ ./s
0 is: ./s
BASH_SOURCE is: ./s
$ . ./s
0 is: bash
BASH_SOURCE is: ./s

$ cat s
#!/bin/bash

printf '$0 is: %s\n$BASH_SOURCE is: %s\n' "$0" "$BASH_SOURCE"

# ------------- SCRIPT ------------- #

#!/bin/bash

echo
echo "# arguments called with ---->  ${@}     "
echo "# \$1 ---------------------->  $1       "
echo "# \$2 ---------------------->  $2       "
echo "# path to me --------------->  ${0}     "
echo "# parent path -------------->  ${0%/*}  "
echo "# my name ------------------>  ${0##*/} "
echo
exit

# ------------- CALLED ------------- #

# Notice on the next line, the first argument is called within double, 
# and single quotes, since it contains two words

$  /misc/shell_scripts/check_root/show_parms.sh "'hello there'" "'william'"

# ------------- RESULTS ------------- #

# arguments called with --->  'hello there' 'william'
# $1 ---------------------->  'hello there'
# $2 ---------------------->  'william'
# path to me -------------->  /misc/shell_scripts/check_root/show_parms.sh
# parent path ------------->  /misc/shell_scripts/check_root
# my name ----------------->  show_parms.sh

# ------------- END ------------- #