怎么让shell脚本获得自己所在目录名？

網中人

原帖由 seeLnd 于 2005-12-30 10:52 发表

1. realpath "$0"

复制代码

能否說說是哪個系統哪個shell才有的 realpath ?

seeLnd

原帖由 網中人 于 2005-12-30 10:53 发表

能否說說是哪個系統哪個shell才有的 realpath ?

我的是Debian Linux (unstable),
realpath不是shell内置命令,
package的名字叫realpath

[ 本帖最后由 seeLnd 于 2005-12-30 11:04 编辑 ]

cocacopi

比如如果有个脚本需要调用自己同级或子级目录的其它脚本，这个时候安装位置的绝对路径就显得很重要了。其实有个很简单的方法，让人手工输入安装路径到shell脚本中就行了。
但是，难道shell脚本就没办法知道自己所在的绝对路径了吗？我觉得肯定是有好办法的。

寂寞烈火

楼主是这样的意思吧,我的测试

/home/lee/test#cat testfile
#!/bin/bash
path=$(dirname $0)
path=${path/\./$(pwd)}
echo "$0 path: $path"
/home/lee/test#alias tf='sh /home/lee/test/testfile'
/home/lee/test#tf
/home/lee/test/testfile path: /home/lee/test
/home/lee/test#cd
/home/lee#tf
/home/lee/test/testfile path: /home/lee/test
/home/lee#cd ..
/home#tf
/home/lee/test/testfile path: /home/lee/test
/home#cd /
/#tf
/home/lee/test/testfile path: /home/lee/test
/#cd /etc/sysconfig
/etc/sysconfig#tf
/home/lee/test/testfile path: /home/lee/test
/etc/sysconfig#echo $?
0
/etc/sysconfig#echo $0
bash
/etc/sysconfig#cd
/home/lee#tf
/home/lee/test/testfile path: /home/lee/test
/home/lee#

網中人

原帖由 cocacopi 于 2005-12-30 11:49 发表
比如如果有个脚本需要调用自己同级或子级目录的其它脚本，这个时候安装位置的绝对路径就显得很重要了。其实有个很简单的方法，让人手工输入安装路径到shell脚本中就行了。
但是，难道shell脚本就没办法知道自己所 ...

我不是已經回過了嗎:

原帖由 網中人 于 2005-12-30 10:49 发表
若 script path 是 / 開頭的, 直接 ${0%/*} 就好, 否則就是 $PWD/${0%/*}.

下面是實在結果:

kenny@x40:~/tmp> cat 1.sh
#!/bin/bash

[ ${0:0:1} = / ] && c_dir=${0%/*} || c_dir=$PWD/${0%/*}
echo current dir is: $c_dir
echo file you want is : $c_dir/1.txt
echo

kenny@x40:~/tmp> ./1.sh
current dir is: /home/kenny/tmp/.
file you want is : /home/kenny/tmp/./1.txt

kenny@x40:~/tmp> /home/kenny/tmp/1.sh
current dir is: /home/kenny/tmp
file you want is : /home/kenny/tmp/1.txt

kenny@x40:~/tmp> ../tmp/1.sh
current dir is: /home/kenny/tmp/../tmp
file you want is : /home/kenny/tmp/../tmp/1.txt

kenny@x40:~/tmp> /tmp/../etc/sysconfig/../../home/kenny/tmp/../tmp/1.sh
current dir is: /tmp/../etc/sysconfig/../../home/kenny/tmp/../tmp
file you want is : /tmp/../etc/sysconfig/../../home/kenny/tmp/../tmp/1.txt

kenny@x40:~/tmp> ~/tmp/1.sh
current dir is: /home/kenny/tmp
file you want is : /home/kenny/tmp/1.txt

kenny@x40:~/tmp> cd ..
kenny@x40:~> tmp/1.sh
current dir is: /home/kenny/tmp
file you want is : /home/kenny/tmp/1.txt

kenny@x40:~> ./tmp/1.sh
current dir is: /home/kenny/./tmp
file you want is : /home/kenny/./tmp/1.txt

kenny@x40:~> cd tmp/d1
kenny@x40:~/tmp/d1> ../1.sh
current dir is: /home/kenny/tmp/d1/..
file you want is : /home/kenny/tmp/d1/../1.txt

記住: 找得到路徑就好, 不管你身在何處...

[ 本帖最后由 網中人 于 2005-12-30 12:44 编辑 ]

puss_yang

#!/bin/sh

PWD=`pwd`
tocken=`basename $0`

dir=`dirname $0`

if [ "$dir" != "." ]; then
    dir=`cd $dir;pwd;cd $PWD`
    #echo "dir=$dir"
    #echo "tocken=$tocken"
else
    path=`which $tocken`
    dir=`dirname $path`
    #echo "path=$path"
fi

if [ "$dir" = "." ]; then
    dir=`pwd`
fi

echo "dir=$dir"

jiazhic

可以用 which command
显示就是教本所在目录

網中人

不好意思, which 只查 $PATH 裡的...

cocacopi

呵呵，puss_yang的脚本可以搞定也。

newzy

[ ${0:0:1} = / ] && c_dir=${0%/*} || c_dir=$PWD/${0%/*}

25 楼 網中人 提供的方法不错, 能对它解释下吗