Update cheatsheets

p4

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# p4
+
+> Perforce Version Control System.
+> More information: <https://www.perforce.com/manuals/cmdref>.
+
+- Log in to the Perforce service:
+
+`p4 login -a`
+
+- Create a client:
+
+`p4 client`
+
+- Copy files from depot into the client workspace:
+
+`p4 sync`
+
+- Create or edit changelist description:
+
+`p4 change`
+
+- Open a file to edit:
+
+`p4 edit -c {{changelist_number}} {{path/to/file}}`
+
+- Open a new file to add it to the depot:
+
+`p4 add`
+
+- Display list of files modified by changelist:
+
+`p4 describe -c {{changelist_number}}`
+
+- Submit a changelist to the depot:
+
+`p4 submit -c {{changelist_number}}`