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This shows you the differences between two versions of the page.

--- bash:cut:cut_using_characters [2019/12/12 22:31] – peter
+++ bash:cut:cut_using_characters [2021/01/26 16:05] (current) – removed peter
@@ Line 1: / Line 1: @@
-====== BASH - cut - Cut using Characters ======
-Cut a section of text based on characters.
-Useful when handling large file processing tasks.
-----
-===== Cut a Single Character from the Input Stream =====
-<code bash>
-echo "cutting text from input" | cut -c 1
-</code>
-The above command cuts the first character from the standard input and displays it in the terminal.
-In this case, it is “c“.
-----
-===== Cut Specific Characters from the Input Stream =====
-<code bash>
-echo "cutting text from input" | cut -c 1,3
-</code>
-This command will cut only the first and third characters of the input string and show them.
-<WRAP important>
-Remember not to exceed the character limit of your string.
-</WRAP>
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-===== Cut a Range of Characters from the Input Stream =====
-<code bash>
-echo "cutting text from input" | cut -c 1-12
-</code>
-Cuts characters from the first position to the twelfth position.
-The result will be “cutting text“.
-----
-===== Cut a Single Character from a Text file =====
-<code bash>
-cut -c 1 test.txt
-</code>
-Displays only the first characters of each of the five rows of our file test.txt.
-It is equivalent to the command <code bash>cat test.txt | cut -c 1</code> and provides the same result as we would get when using the byte flag.
-----
-===== Cut Specific Characters from the a File =====
-<code bash>
-cut -c 7,10 test.txt
-</code>
-Cuts only the seventh and tenth characters of each five rows.
-You can specify any character positions as long as they fall within the range of available characters.
-----
-===== Cut a Range of Characters a Text File =====
-<code bash>
-cut -c 1-12 test.txt
-</code>
-Outputs the first one to twelfth characters of each line in the test.txt file.
-The cut command in Unix behaves the same when cutting a range of characters and range of bytes.
-----
-===== Cut from a Specific Character to the End of the Input Stream =====
-<code bash>
-echo "cutting text from input" | cut -c 5-
-</code>
-The above cut command will cut the text starting from the fifth byte to the end of the string.
-It can be beneficial when you need to cut from a specified character position until the end of the input stream.
-Simply change the value after b while keeping the trailing – on.
-----
-===== Cut from a Specific Character to the End of the File =====
-<code bash>
-cut -c 5- test.txt
-</code>
-This command will start cutting each of the five rows of the test.txt file from their fifth character position and will finish after reaching the end of every line.
-The trailing hyphen(-) is mandatory for this kind of operation.
-----
-===== Cut a Specified Amount of Characters Starting from beginning of a string =====
-<code bash>
-echo "cutting text from input" | cut -c -5
-</code>
-This command will only cut the first five character positions of our input.
-Remember to add the preceding hyphen(-) else the output will not be the same as you expect.
-----
-===== Cut from the First Character to a Specified Position from a File =====
-<code bash>
-cut -c -5 test.txt
-</code>
-This cut command in Unix will cut the first five characters of each line from the file test.txt.
-Notice how the hyphen(-) is being used for the commands 21-24 in this list.
-----
-===== Cut the First few Characters in Alphabetical Order =====
-<code bash>
-cut -c 1-5 test.txt | sort
-</code>
-Cuts the first five bytes of each row alphabetically.
-The sort command doesn’t require any options when sorting alphabetically.
-----
-===== Cut the First few Characters in Reverse Order =====
-<code bash>
-cut -c 1-5 test.txt | sort -r
-</code>
-Cuts the first five characters from each row and will show them after sorting in reverse.
-----
-====