Rf: Created page with "= Grep = * grep stands for "global regular expression print" * you use this command to search for text patterns in a file, for example, Linux's mini-dicitonary. grep "adge"..."

2017-04-19T22:37:12Z

Created page with "= Grep = * grep stands for "global regular expression print" * you use this command to search for text patterns in a file, for example, Linux's mini-dicitonary. grep "adge"..."

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= Grep =
* grep stands for "global regular expression print"
* you use this command to search for text patterns in a file, for example, Linux's mini-dicitonary.

grep "adge" /usr/share/dict/words

* regular expressions are different and more powerful than wildcard characters
* made of special symbols which designate type of characters.
* grep requires a regular expression pattern as a parameter, and prints all the lines in a file containing that pattern.
* grep is especially useful in combination with pipes as you can filter the results of other commands.
* For example, perhaps you only want to see only the information in an EMBL file relating to the origin of the
sequence, that is, the DE line?

== Exercise ==
* While in the hdi2u_files directory, type the command:
grep "DE" hsy14768.embl
What is this command doing?

Hdi2u S21 - Revision history

Rf: Created page with "= Grep = * grep stands for "global regular expression print" * you use this command to search for text patterns in a file, for example, Linux's mini-dicitonary. grep "adge"..."