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third/libcurl/docs/cmdline-opts/trace.md

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+---
+c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+SPDX-License-Identifier: curl
+Long: trace
+Arg: <file>
+Help: Write a debug trace to FILE
+Mutexed: verbose trace-ascii
+Category: verbose global
+Added: 7.9.7
+Multi: single
+Scope: global
+See-also:
+  - trace-ascii
+  - trace-config
+  - trace-ids
+  - trace-time
+Example:
+  - --trace log.txt $URL
+---
+
+# `--trace`
+
+Save a full trace dump of all incoming and outgoing data, including
+descriptive information, in the given output file. Use `-` as filename to have
+the output sent to stdout. Use `%` as filename to have the output sent to
+stderr.
+
+Note that verbose output of curl activities and network traffic might contain
+sensitive data, including usernames, credentials or secret data content. Be
+aware and be careful when sharing trace logs with others.