shell脚本获取绝对路径: $(cd $(dirname $0);pwd)

[humingcheng]

绝对路径（不含fileName）：$(cd $(dirname $0);pwd)

解析：dirname $0表示脚本父目录；pwd即进入父目录后获取绝对路径；不能只执行pwd或者$0。
附注：单独执行pwd或$0的结果：
+----------------------------------
/tmp/test/f1.sh:
echo "pwd:" $(pwd)
echo '$0: ' $0
+----------------------------------
Test:/ # bash /tmp/test/f1.sh
pwd: /
$0: /tmp/test/f1.sh
+----------------------------------
Test:/tmp # bash /tmp/test/f1.sh
pwd: /tmp
$0: /tmp/test/f1.sh
+----------------------------------
Test:/tmp/test # bash /tmp/test/f1.sh
pwd: /tmp/test
$0: /tmp/test/f1.sh
+----------------------------------
Test:/tmp/test # bash f1.sh
pwd: /tmp/test
$0: f1.sh