How to redirect Valgrind s output to a file

Question

While working with Valgrind tool  i need to log the details produced by valgrind tool  How can I accomplish that  I tried something like    valgrind a out   test   and   valgrind a out  gt  test   It gave just the program s output and not the valgrind memory error leak information  Even i am getting like this if the program requires no user interaction  i e  giving input   If the program need user input even that thing itself won t work    How can I do this

User · Accepted Answer

valgrind --log-file  filename

User · Answer

You can also set the options --log-fd if you just want to read your logs with a less  For example    valgrind --log-fd 1 ls   less

User · Answer

In addition to the other answers  particularly by Lekakis   some string replacements can also be used in the option --log-file  as elaborated in the Valgrind s user manual  Four replacements were available at the time of writing    p  Prints the current process ID  valgrind --log-file  quot myFile- p dat quot   lt application-name gt     n  Prints file sequence number unique for the current process  valgrind --log-file  quot myFile- p- n dat quot   lt application-name gt     q ENV   Prints contents of the environment variable ENV  valgrind --log-file  quot myFile- q HOME  dat quot   lt application-name gt        Prints    valgrind --log-file  quot myFile-   dat quot   lt application-name gt

User · Answer

By default  Valgrind writes its output to stderr   So you need to do something like   valgrind a out  gt  log txt 2 gt  amp 1   Alternatively  you can tell Valgrind to write somewhere else  see http   valgrind org docs manual manual-core html manual-core comment  but I ve never tried this

[redirect] How to redirect Valgrind's output to a file?

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