share|improve this answer edited Apr 22 '15 at 22:18 answered Apr 22 '15 at 13:40 Celada 20.7k13755 (expletive)! You could also just switch to another shell after logging in as root. –James O'Gorman Apr 6 '12 at 23:21 @JamesO'Gorman Good catch I updated my answer. –Craig Apr Examples: % who > names Redirect standard output to a file named names % (pwd; ls -l) > out Redirect output of both commands to a file named out % pwd; The best you can do is ( command >stdout_file ) >&stderr_file which runs "command" in a subshell; stdout is redirected inside the subshell to stdout_file, and both stdout and stderr from http://supercgis.com/redirect-stderr/redirect-error-to-stdout-csh.html
The first and second process's stderr goes to the terminal. Next week we'll look at Bourne shell redirection which is far more flexible. (And if you think csh is flexible Introduction to Linux - A Hands on Guide This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started Redirect stdin from a file % wc < file Which does something like this: Here stdout and stderr remain attached to the terminal, but input is read from the file. When I press ↑, I get pkg_add emacs-23.4,2.tbz 2 > output.log with a space before the 2.
name >& name >&! Again, if a double angle bracket is used (">>&") then the output is appended to the file. share|improve this answer edited May 24 '12 at 10:06 answered May 24 '12 at 9:29 Daniel Andersson 15.9k22845 add a comment| up vote 5 down vote EDIT: I didn't see this stdin is the place from which input comes to a process, stdout is the place where normal output goes, and stderr is the place where error or diagnostic output goes.
Please note that you must be affiliated with Indiana University to receive support. Join our community today! By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. C Shell Redirect Stderr Dev Null Is there some negative side effect i don't see? –Martin Jul 29 '14 at 12:23 This is the correct answer in my opinion..
Delayed effects after player's death How does the exit command work on a Unix terminal? Csh Ambiguous Output Redirect If I could use bash here, I would, since it works for me. –Nate Parsons May 23 '12 at 15:22 Could you quote the redirect? What are the difficulties of landing on an upslope runway How to explain centuries of cultural/intellectual stagnation? http://unix.stackexchange.com/questions/35715/stderr-redirection-not-working-in-csh share|improve this answer answered Jan 23 '14 at 16:05 Chris 23825 This answer should have more votes IMHO.
LinuxQuestions.org > Forums > Linux Forums > Linux - General TCSH: redirect stdout and stderr seperately User Name Remember Me? Csh Tee Command To redirect standard error messages to a file, enter: command 2> file Replace command with the command you want to execute and file with the file to which you want to Your comment is useful and informative. So I updated it with that option, but thanks for the info, it helped a lot. –paxdiablo Aug 5 '15 at 1:16 @paxdiablo, I didn't realize you could use
If the file does not exist then it is created; if the file exists, it is truncated, its previous contents being lost. http://supercgis.com/redirect-stderr/redirect-to-standard-error.html What does the "stain on the moon" in the Song of Durin refer to? The latter can be done with either the first part of my answer or this answer but there is no way for csh to do the former. UNIX is a registered trademark of The Open Group. Command Required To Redirect The Standard Error Descriptor To A File In Unix
What you are wanting is to combine the stderr and stdout streams and NOT into a file. Interaction with dummy variable How is being able to break into any linux machine through grub2 secure? When a girl mentions her girlfriend, does she mean it like lesbian girlfriend? Source Schrödinger's cat and Gravitational waves Trick or Treat polyglot What is the meaning of the 90/10 rule of program optimization?
Redirect standard output; overwrite file if it exists >&! Zsh Redirect Stderr If the file already exists, it is truncated before the process is spawned. (unless the "noclobber" shell variable is set in which case redirecting to an existing file is an error.) 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
Hence, you can achieve your ends in this specific case with: xxx |& cat Of course, there's also nothing stopping you from running bash (assuming it's on the system somewhere) within share|improve this answer edited May 23 '12 at 14:43 answered May 23 '12 at 14:34 Dave Forgac 254412 1 Thanks for pointing that out, but I'm not sure it applies. Setting noclobber prevents this. Missing Name For Redirect Csh asked 4 years ago viewed 8980 times active 3 years ago Blog Stack Overflow Podcast #92 - The Guerilla Guide to Interviewing Related 3In tcsh, how can I silence the output
Unix - Frequently Asked Questions (2/7) [Frequent posting]Section - How do I redirect stdout and stderr separately in csh? Note: The following information pertains primarily to Bourne-like shells, such as sh, ksh, and bash. If the shell variable noclobber is set, then it is an error for the file not to exist, unless one of the `!' forms is given. http://supercgis.com/redirect-stderr/redirect-error-to-out.html 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 >&
How to search for flights for a route staying within in an alliance? By default, standard input is connected to the terminal keyboard and standard output and error to the terminal screen. linux shell tcsh share|improve this question edited May 24 '12 at 10:04 Daniel Andersson 15.9k22845 asked May 23 '12 at 14:28 Nate Parsons 6402823 echo test >&2 prints to asked 1 year ago viewed 2350 times active 1 year ago Blog Stack Overflow Podcast #92 - The Guerilla Guide to Interviewing Linked 14 determine shell in script during runtime Related
Contact Us - Advertising Info - Rules - LQ Merchandise - Donations - Contributing Member - LQ Sitemap - Main Menu Linux Forum Android Forum Chrome OS Forum Search LQ Consider the following commands: vi --version and vi --xxx. All fields are required. Delayed effects after player's death How is being able to break into any linux machine through grub2 secure?
Full name Email address Please provide your IU email address. Redirect stdout to a file % ls > file Which does something like this: So stdin and stderr are still attached to the terminal, but anything sent to stdout goes to Find More Posts by DougRoyer Thread Tools Show Printable Version Email this Page Search this Thread Advanced Search Posting Rules You may not post new threads You may not post sh -c 'command 2>stderr_file' User Contributions: Comment about this article, ask questions, or add new information about this topic:Name:E-mail:Show my email publiclyType the code shown:Public Comment: (50-4000 characters) Archived related questions and
Main Menu LQ Calendar LQ Rules LQ Sitemap Site FAQ View New Posts View Latest Posts Zero Reply Threads LQ Wiki Most Wanted Jeremy's Blog Report LQ Bug Syndicate Latest Why is the bridge on smaller spacecraft at the front but not in bigger vessel? This appears to be okay since both --xxx and --version exit vi. What you're doing is starting the echo process and redirecting its output to stderr.
In csh, you can redirect stdout with ">", or stdout and stderr together with ">&" but there is no direct way to redirect stderr only. What is the meaning of the 90/10 rule of program optimization? If you read the second part of my answer (temporarily calling bash from csh, and now expanded with a concrete example to hopefully clarify), that does it just fine. –paxdiablo Jul How to explain centuries of cultural/intellectual stagnation?
Redirection lets you change these attachment points.