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72 lines
2.4 KiB
72 lines
2.4 KiB
2 years ago
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## files-details
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### Instructions
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Create a script `files-details.sh`, which will allow you to see the files inside the folder `hard-perms`, this way:
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Expected output:
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```console
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$ ./files-details.sh
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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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- `ls -l --time-style=TIME_STYLE`
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- Time conversion specifiers you need to know:
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- `%R`, 24-hour hour and minute. Same as ‘%H:%M’.
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- Date conversion specifiers you need to know:
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- `%F`, full date in ISO 8601 format; like ‘%+4Y-%m-%d’ except that any flags or field width override the ‘+’ and (after subtracting 6) the ‘4’. This is a good choice for a date format, as it is standard and is easy to sort in the usual case where years are in the range 0000…9999.
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- You can use `sed` to remove the first line of the output.
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```console
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$ ./files-details.sh # without using sed
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total
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-rw-rw-r-- 2022-12-20 03:10:18 README.md
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$ ./files-details.sh # using sed
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-rw-rw-r-- 2022-12-20 03:10:18 README.md
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$
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```
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- `awk`.
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You can specify specific column names to display or include in the awk output using the field numbers. For example:
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```console
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$ ls -l | awk '{print $1, $2, $3, $4, $5, $6, $7, $8, $9, $10}' # print all the given fields
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total 4
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-rw-rw-r-- 1 user user 1989 dez 20 15:19 README.md
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$ ls -l | awk '{print $1, $2, $4, $5, $7, $8, $10}' # print all the given fields
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total 4
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-rw-rw-r-- 1 user 2350 20 15:25
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$
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```
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awk ‘{print $1}’ emp_records.txt
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awk {print $1, $6, $7, $8, $9, $10}'
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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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- [Time conversion specifiers](https://www.gnu.org/software/coreutils/manual/html_node/Time-conversion-specifiers.html).
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- [Date conversion specifiers](https://www.gnu.org/software/coreutils/manual/html_node/Date-conversion-specifiers.html).
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- [awk](https://www.gnu.org/software/gawk/manual/html_node/Print-Examples.html).
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