mirror of https://github.com/01-edu/public.git
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#!/usr/bin/env bash |
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# Unofficial Bash Strict Mode |
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set -euo pipefail |
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IFS=' |
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' |
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script_dirS=$(cd -P "$(dirname "$BASH_SOURCE")" &>/dev/null && pwd) |
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challenge() { |
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submitted=$(ls -l "$1" && bash "$script_dirS"/student/hard-perm.sh) |
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expected=$(ls -l "$1" && bash "$script_dirS"/solutions/hard-perm.sh) |
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diff <(echo "$submitted") <(echo "$expected") |
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} |
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challenge hard-perm/ |
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chmod 401 hard-perm/0 hard-perm/A && chmod 402 hard-perm/1 hard-perm/9 && chmod 604 hard-perm/2 hard-perm/8 && chmod 777 hard-perm/3 && chmod 510 hard-perm/4 hard-perm/7 && chmod 460 hard-perm/5 hard-perm/6 |
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## hard-perm |
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### Instructions |
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Create a file `hard-perm.sh`, which will change the default permissions for the files and folders inside the folder `hard-perms`, to the ones bellow: |
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Right now the folder looks like this: |
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```console |
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$ ls -l hard-perm |
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total 12 |
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drwxrwxr-x 2 user user 4096 dez 13 18:10 0 |
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-rw-rw-r-- 1 user user 0 dez 13 18:11 1 |
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-rw-rw-r-- 1 user user 0 dez 13 18:11 2 |
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drwxrwxr-x 2 user user 4096 dez 13 18:10 3 |
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-rw-rw-r-- 1 user user 0 dez 13 18:11 4 |
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-rw-rw-r-- 1 user user 0 dez 13 18:11 5 |
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-rw-rw-r-- 1 user user 0 dez 13 18:11 6 |
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-rw-rw-r-- 1 user user 0 dez 13 18:11 7 |
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-rw-rw-r-- 1 user user 0 dez 13 18:11 8 |
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-rw-rw-r-- 1 user user 0 dez 13 18:11 9 |
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drwxrwxr-x 2 user user 4096 dez 13 18:10 A |
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``` |
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Expected output: |
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```console |
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$ ls -l hard-perm |
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total 12 |
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dr-------x 2 user user 4096 dez 13 17:50 0 |
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-r------w- 1 user user 0 dez 13 17:51 1 |
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-rw----r-- 1 user user 0 dez 13 17:51 2 |
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drwxrwxrwx 2 user user 4096 dez 13 17:51 3 |
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-r-x--x--- 1 user user 0 dez 13 17:51 4 |
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-r--rw---- 1 user user 0 dez 13 17:51 5 |
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-r--rw---- 1 user user 0 dez 13 17:51 6 |
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-r-x--x--- 1 user user 0 dez 13 17:51 7 |
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-rw----r-- 1 user user 0 dez 13 17:51 8 |
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-r------w- 1 user user 0 dez 13 17:51 9 |
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dr-------x 2 user user 4096 dez 13 17:50 A |
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``` |
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### Hints |
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> You have to use Man or Google to know more about commands flags, in order to solve this exercise! |
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> Google and Man will be your friends! |
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### References |
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- [Chmod](https://www.linode.com/docs/guides/modify-file-permissions-with-chmod/#modify-file-permissions-with-chmod) |
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