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33 lines
1.0 KiB
33 lines
1.0 KiB
2 years ago
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## Master the ls
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### Instructions
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Put in a file `master-the-ls`, the command line that will:
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- list the files and directories of the current directory.
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- Ignore the hidden files, the "." and the "..".
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- Separates the results with commas.
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- Order them by ascending order of access time (the newest first).
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- Have the directories ends with a `/`.
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### Hints
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Here are some Commands that can help you:
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- `tr`. Translate characters: run replacements based on single characters and character sets.
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- Replace all occurrences of a character in a file, and print the result:
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`tr {{find_character}} {{replace_character}} < {{filename}}`
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- `ls`. List directory contents.
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- `sed`. Edit text in a scriptable manner.
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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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- [tr](https://www.gnu.org/software/coreutils/tr).
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- [ls](https://www.gnu.org/software/coreutils/ls).
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- [sed](https://www.gnu.org/software/sed/manual/sed.html).
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