04-25-2011
There are three ways to get stdout strings into a variable, and the back-quotes is the oldest, but I like it least, as there is no symmetry check in vi, or nesting. So, unless I am writing for bourne sh, I never say '`'.
The $(command) introduced with ksh allows vi % symmetry checking and allows nesting. (Be careful to use balanced paren pairs (...) in 'case $var in' cases!)
However, the simplest thing for simple values, not multi-line and not preserving whitespace, is just '| read var'. It introduces no nesting.
For lists in to lists on command line: '| xargs -n999 command '
For lists to get individual processing: '| while read var ; do ... ; done'
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tee(1) User Commands tee(1)
NAME
tee - replicate the standard output
SYNOPSIS
tee [-ai] [file...]
DESCRIPTION
The tee utility will copy standard input to standard output, making a copy in zero or more files. tee will not buffer its output. The
options determine if the specified files are overwritten or appended to.
OPTIONS
The following options are supported.
-a Appends the output to the files rather than overwriting them.
-i Ignores interrupts.
OPERANDS
The following operands are supported:
file A path name of an output file. Processing of at least 13 file operands will be supported.
USAGE
See largefile(5) for the description of the behavior of tee when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes).
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of tee: LANG, LC_ALL, LC_CTYPE, LC_MES-
SAGES, and NLSPATH.
EXIT STATUS
The following exit values are returned:
0 The standard input was successfully copied to all output files.
>0 The number of files that could not be opened or whose status could not be obtained.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
|CSI |Enabled |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
SEE ALSO
cat(1), attributes(5), environ(5), largefile(5), standards(5)
SunOS 5.10 20 Dec 1996 tee(1)