1SPONGE(1)                          moreutils                         SPONGE(1)
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NAME

6       sponge - soak up standard input and write to a file
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SYNOPSIS

9       sed '...' file | grep '...' | sponge [-a] file
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DESCRIPTION

12       sponge reads standard input and writes it out to the specified file.
13       Unlike a shell redirect, sponge soaks up all its input before writing
14       the output file. This allows constructing pipelines that read from and
15       write to the same file.
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17       sponge preserves the permissions of the output file if it already
18       exists.
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20       When possible, sponge creates or updates the output file atomically by
21       renaming a temp file into place. (This cannot be done if TMPDIR is not
22       in the same filesystem.)
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24       If the output file is a special file or symlink, the data will be
25       written to it, non-atomically.
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27       If no file is specified, sponge outputs to stdout.
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OPTIONS

30       -a
31           Replace the file with a new file that contains the file's original
32           content, with the standard input appended to it. This is done
33           atomically when possible.
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AUTHOR

36       Colin Watson and Tollef Fog Heen
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40moreutils                         2006-02-19                         SPONGE(1)