Update cheatsheets

linux/csplit

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# csplit
+
+> Split a file into pieces.
+> This generates files named "xx00", "xx01", and so on.
+> More information: <https://www.gnu.org/software/coreutils/csplit>.
+
+- Split a file at lines 5 and 23:
+
+`csplit {{path/to/file}} 5 23`
+
+- Split a file every 5 lines (this will fail if the total number of lines is not divisible by 5):
+
+`csplit {{path/to/file}} 5 {*}`
+
+- Split a file every 5 lines, ignoring exact-division error:
+
+`csplit -k {{path/to/file}} 5 {*}`
+
+- Split a file at line 5 and use a custom prefix for the output files:
+
+`csplit {{path/to/file}} 5 -f {{prefix}}`
+
+- Split a file at a line matching a regular expression:
+
+`csplit {{path/to/file}} /{{regular_expression}}/`