如何为符号链接创建for循环

Question

i want for loop to create symbolic link for All the files under /root/Desktop/match/jars/44a65820/* to be under this path /root/Desktop/match/jars/ as symbolic link without version 44a65820 for example

match@match:~/Desktop/match/jars# ls -ll
total 4
/root/Desktop/match/jars/match-five.jar -> /root/Desktop/match/jars/44a65820/match-five-44a65820.jar
/root/Desktop/match/jars/match-four.jar -> /root/Desktop/match/jars/44a65820/match-four-44a65820.jar
/root/Desktop/match/jars/match-one.jar ->  /root/Desktop/match/jars/44a65820/match-one-44a65820.jar
/root/Desktop/match/jars/match-three.jar -> /root/Desktop/match/jars/44a65820/match-three-44a65820.jar
/root/Desktop/match/jars/match-two.jar -> /root/Desktop/match/jars/44a65820/match-two-44a65820.jar
root/Desktop/match/jars/match-six.jar -> /root/Desktop/match/jars/44a65820/match-six-44a65820.jar

i don't know how to do?

Answer 1

Use parameter expansion to strip prefix and suffix.

for f in /root/Desktop/match/jars/44a65820/*; do
  link="${f%-44a65820.jar}.jar";
  ln -s "$f" "/root/Desktop/match/jars/${link##*/}";
done

Answer 2

Given the simplified tree for testing

shell> tree /tmp/match
/tmp/match
└── jars
    └── 44a65820
        ├── one.jar
        ├── three.jar
        └── two.jar

In Ansible, declare the variable

match_files: "{{ st.files|map(attribute='path')|list }}"

and find the files

    - find:
        path: /tmp/match
        file_type: file
        patterns: '*.jar'
        recurse: true
      register: st

gives

match_files:
  - /tmp/match/jars/44a65820/two.jar
  - /tmp/match/jars/44a65820/one.jar
  - /tmp/match/jars/44a65820/three.jar

Create the links in the loop

    - file:
        state: link
        src: "{{ item }}"
        dest: "{{ path }}/{{ file }}"
      loop: "{{ match_files }}"
      vars:
        arr: "{{ item.split('/') }}"
        path: "{{ arr[:-2]|join('/') }}"
        file: "{{ arr[-1] }}"

gives

shell> tree /tmp/match
/tmp/match
└── jars
    ├── 44a65820
    │   ├── one.jar
    │   ├── three.jar
    │   └── two.jar
    ├── one.jar -> /tmp/match/jars/44a65820/one.jar
    ├── three.jar -> /tmp/match/jars/44a65820/three.jar
    └── two.jar -> /tmp/match/jars/44a65820/two.jar

---

Example of a complete playbook for testing

- hosts: localhost vars: match_files: "{{ st.files|map(attribute='path')|list }}" tasks: - find: path: /tmp/match file_type: file patterns: '*.jar' recurse: true register: st - debug: var: match_files - file: state: link src: "{{ item }}" dest: "{{ path }}/{{ file }}" loop: "{{ match_files }}" vars: arr: "{{ item.split('/') }}" path: "{{ arr[:-2]|join('/') }}" file: "{{ arr[-1] }}"