Update cheatsheets

for

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# for
+
+> Perform a command several times.
+> More information: <https://www.gnu.org/software/bash/manual/bash.html#Looping-Constructs>.
+
+- Execute the given commands for each of the specified items:
+
+`for {{variable}} in {{item1 item2 ...}}; do {{echo "Loop is executed"}}; done`
+
+- Iterate over a given range of numbers:
+
+`for {{variable}} in {{{from}}..{{to}}..{{step}}}; do {{echo "Loop is executed"}}; done`
+
+- Iterate over a given list of files:
+
+`for {{variable}} in {{path/to/file1 path/to/file2 ...}}; do {{echo "Loop is executed"}}; done`
+
+- Iterate over a given list of directories:
+
+`for {{variable}} in {{path/to/directory1/ path/to/directory2/ ...}}; do {{echo "Loop is executed"}}; done`
+
+- Perform a given command in every directory:
+
+`for {{variable}} in */; do (cd "${{variable}}" || continue; {{echo "Loop is executed"}}) done`