tee - Displays the output of a program and copies it into
tee [-ai] file...
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Adds the output to the end of file instead of writing over
it. Ignores the SIGINT signal.
Standard input is stored into, or appended to, the file
[Tru64 UNIX] The tee command can accept up to 20
The tee command reads standard input and writes to both
standard output, and each specified file.
The tee command is useful when you wish to view program
output as it is displayed, and also want to save it in a
file. The tee command does not buffer output, so you may
wish to pipe the output of tee to more if more than one
full screen of data is anticipated.
If a write to any file fails, the exit status of tee will
be non-zero. Writes to all other specified files may be
successful, and operation will continue until standard
input is exhausted.
The following exit values are returned: Successful completion.
An error occurred.
To view and save the output from a command at the same
time, enter: lint program.c | tee program.lint
This displays the standard output of the command
lint program.c at the terminal, and at the same
time saves a copy of it in the file program.lint.
If program.lint already exists, it is deleted and
replaced. To display and append to a file, enter:
lint program.c | tee -a program.lint
This displays the standard output of lint program.c
at the terminal and at the same time appends a copy
of it to the end of program.lint. If the file
program.lint does not exist, it is created.
ENVIRONMENT VARIABLES [Toc] [Back]
The following environment variables affect the execution
of tee: Provides a default value for the internationalization
variables that are unset or null. If LANG is unset or
null, the corresponding value from the default locale is
used. If any of the internationalization variables contain
an invalid setting, the utility behaves as if none of
the variables had been defined. If set to a non-empty
string value, overrides the values of all the other internationalization
variables. Determines the locale for the
interpretation of sequences of bytes of text data as characters
(for example, single-byte as opposed to multibyte
characters in arguments). Determines the locale for the
format and contents of diagnostic messages written to
standard error. Determines the location of message catalogues
for the processing of LC_MESSAGES.
Commands: cat(1), echo(1), script(1)
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