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46 lines
2.1 KiB
46 lines
2.1 KiB
2 years ago
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## file-researcher
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### Instructions
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Create a file `file-researcher.sh`, which will look in the `file-researcher/facts.txt` file for the following:
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- The complete sentence which begins like so `It takes 12 honey`.
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- All the lines where the word `year` appears.
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You can not use "echo"!
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Expected Output:
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```console
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$ ./file-researcher.sh | cat -e
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It takes 12 honeybees to make one teaspoon of honey$
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6:898 tornadoes were recorded to have occurred in the United States in the year 2000.$
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12:The only two days of the year in which there are no professional sportsgames (MLB, NBA, NHL, or NFL) are the day before and the day after theMajorLeague All-Star Game.$
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15:All dogs are the descendant of the wolf. These wolves lived in eastern Asia about 15,000 years ago$
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32:Most fleas do not live past a year old$
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39:Every 238 years, the orbits of Neptune and Pluto change making Neptune at times the farthest planet from the sun$
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60:A maple tree is usually tapped when the tree is at least 45 years old and has a diameter of 12 inches$
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63:An acre of trees can remove about 13 tons of dust and gases every year from the surrounding environment$
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67:Every year, 100 million sharks are killed by people$
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70:One female mouse can produce up to 100 babies a year$
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95:In Johannesburg, the average car will be involved in an accident once every four years.$
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96:The youngest actress to be nominated as best actress is Keisha Castle-Hughes who was nominated at just 13 years old$
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121:In an average lifetime, a person will spend 4 years traveling in an automobile and six months waiting at a red light.$
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$
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```
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### Hints
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`grep` is a command-line utility for searching plain-text data sets for lines that match a regular expression.
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```console
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$ head example.txt
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Indonesia consists only of islands - 13,667 total
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During World War II, the very first bomb dropped on Berlin by the Allies killed the only elephant in the Berlin Zoo
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$ grep "Indonesia" example.txt
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Indonesia consists only of islands - 13,667 total
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```
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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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