Redirecting Console Output to a File in Unix

Redirect all output to file in Bash

That part is written to stderr, use 2> to redirect it. For example:

foo > stdout.txt 2> stderr.txt

or if you want in same file:

foo > allout.txt 2>&1

Note: this works in (ba)sh, check your shell for proper syntax

redirecting console output to a file in unix

Possibly the large amount of output is "permission denied" type messages. Redirect errors to the log file by appending 2>&1.

2 is the stream number for stderr (error messages), 1 is represents the stdout stream (the standard non-error output stream).

find . -iname "MyLog.log" > ./myfile/storeLog.log 2>&1

How to redirect output to a file and stdout

The command you want is named tee:

foo | tee output.file

For example, if you only care about stdout:

ls -a | tee output.file

If you want to include stderr, do:

program [arguments...] 2>&1 | tee outfile

2>&1 redirects channel 2 (stderr/standard error) into channel 1 (stdout/standard output), such that both is written as stdout. It is also directed to the given output file as of the tee command.

Furthermore, if you want to append to the log file, use tee -a as:

program [arguments...] 2>&1 | tee -a outfile

How can I redirect console output to file?

Use shell output redirection

your-command > outputfile.txt

The standard error will still be output to the console. If you don't want that, use:

your-command > outputfile.txt 2>&1

or

your-command &> outputfile.txt

You should also look into the tee utility, which can make it redirect to two places at once.

Redirect stdout and stderr to a file and also to console in linux

The tee command can help you out. It reads from standard input and writes to standard output and files.

So the following command will do:

some_command.sh 2>&1 | tee file.txt

Manpage: http://man7.org/linux/man-pages/man1/tee.1.html

Command output redirect to file and terminal

Yes, if you redirect the output, it won't appear on the console. Use tee.

ls 2>&1 | tee /tmp/ls.txt

How to redirect and append both standard output and standard error to a file with Bash

cmd >>file.txt 2>&1

Bash executes the redirects from left to right as follows:

1. >>file.txt: Open file.txt in append mode and redirect stdout there.
2. 2>&1: Redirect stderr to "where stdout is currently going". In this case, that is a file opened in append mode. In other words, the &1 reuses the file descriptor which stdout currently uses.

Problem redirecting output of find to a file

The first thing I would do is use single quotes (some shells will expand the wildcards, though I don't think bash does, at least by default), and the first argument to find is a directory, not a list of files:

find ~ -name '*.txt' -print > list_of_txt_files.list

Beyond that, it may just be taking a long time, though I can't imagine anyone having that many text files (you say you have a lot but it would have to be pretty massive to slow down find). Try it first without the redirection and see what it outputs:

find ~ -name '*.txt' -print

Redirecting the output of time command to a file

You're using bash, which indeed has a built-in keyword called time which functions in a similar way.

Instead of using the built-in time (bash) command, you can access the installed binary (if any) like /usr/bin/time -p [command] >file 2>&1. Which will exactly do what you expect.
Please note the -p option, which is needed for the "portable output format" you've seen above.

Also please take a look at the manpage: man time.

---

Related Topics