Direct Standard Error To Standard Out
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>20.3. Applications
Redirect Standard Error To Standard Output
otherwise overwrites it. ls -lR > dir-tree.list # Creates a file containing a listing of the directory tree. : > filename # The > truncates file "filename" to zero length. # If file not present, creates zero-length file (same effect as 'touch'). # The : serves as a dummy placeholder, producing no output. > filename # The > truncates file "filename" to zero length. # If file not present, creates zero-length file (same effect as 'touch'). # (Same result as ": >", above, but this does not work with some shells.) COMMAND_OUTPUT >> # Redirect stdout to a file. # Creates the file if not present, otherwise appends to it. # Single-line redirection commands (affect only the line they are on): # -------------------------------------------------------------------- 1>filename # Redirect stdout to file "filename." 1>>filename # Redirect and append stdout to file "filename." 2>filename # Redirect stderr to file "filename." 2>>filename # Redirect and append stderr to file "filename." &>filename # Redirect both stdout and stderr to file "filename." # This operator is now functional, as of Bash 4, final release. M>N # "M" is a file descriptor, which defaults to 1, if not explicitly set. # "N" is a filename. # File descriptor "M" is redirect to file "N." M>&N # "M"
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Redirect Standard Error To Stdout
policies of this site About Us Learn more about Stack Overflow the redirect standard error and output to different files company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags linux pipe standard error Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only http://www.tldp.org/LDP/abs/html/io-redirection.html takes a minute: Sign up How to redirect both stdout and stderr to a file up vote 160 down vote favorite 45 Hi I am running a bash script that creates a log file for the execution of the command I use the following Command1 >> log_file Command2 >> log_file This only sends the standard output and not the standard error http://stackoverflow.com/questions/7526971/how-to-redirect-both-stdout-and-stderr-to-a-file which appears on the terminal. Can I log both the stderr and stdout logged to a file? bash stdout stderr share|improve this question edited Sep 23 '11 at 10:11 asked Sep 23 '11 at 9:35 sdmythos_gr 1,62621321 2 possible duplicate of Redirect stderr and stdout in a bash script –Nathan Aug 19 '14 at 19:35 Possible duplicate of How can I redirect and append both stdout and stderr to a file with Bash? –That1Guy May 5 at 15:19 add a comment| 5 Answers 5 active oldest votes up vote 232 down vote accepted If you want to log to the same file: command1 >> log_file 2>&1 If you want different files: command1 >> log_file 2>> err_file share|improve this answer answered Sep 23 '11 at 9:37 Mat 135k21234273 72 And just to save someone else the frustration, note that the order is important: 2>&1 needs to occur after >> log_file. –Rufflewind Jan 2 '14 at 6:34 2 Why >> and not > ? –user3527975 Mar 16 at 21:38 3 >> appends to the file, > overwri
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies http://stackoverflow.com/questions/13720246/redirect-stderr-to-stdout-in-c-shell of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges http://sc.tamu.edu/help/general/unix/redirection.html Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a standard error minute: Sign up redirect stderr to stdout in c shell up vote 34 down vote favorite 9 When I run the following command in csh, I got nothing, but it works in bash, is there any equivalent in csh which can redirect the standard error to standard out? xxx 2>&1 Note: xxx is a invalid command, I just want to make an direct standard error error to see the output. shell csh io-redirection share|improve this question asked Dec 5 '12 at 9:45 zdd 4,03352249 2 CSH is dangerous. Try to shift to bash,zsh faqs.org/faqs/unix-faq/shell/csh-whynot –SS Hegde Dec 5 '12 at 11:41 add a comment| 6 Answers 6 active oldest votes up vote 43 down vote accepted The csh shell has never been known for its extensive ability to manipulate file handles in the redirection process. You can redirect both standard output and error to a file with: xxx >& filename but that's not quite what you were after, redirecting standard error to the current standard output. However, if your underlying operating system exposes the standard output of a process in the file system (as Linux does with /dev/stdout), you can use that method as follows: xxx >& /dev/stdout This will force both standard output and standard error to go to the same place as the current standard output, effectively what you have with the bash redirection, 2>&1. Just keep in mind this isn't a csh feature. If you run on an operating system that doesn't expose standard outp
is connected to the terminal keyboard and standard output and error to the terminal screen. The way of indicating an end-of-file on the default standard input, a terminal, is usually