coreutils/tests/dd/bytes, branch v8.18

tests: convert nearly all `...` expressions to $(...)

2012-04-04T10:20:56Z

Exempt init.sh because it runs before we're assured to have a shell that groks $(...). Exempt *.mk because "$" would have to be doubled, and besides, any `...` expression in a .mk file is almost certainly evaluated before init.sh is run. Finally, also exempt the perl-based tests, because perl's `...` cannot be converted to $(...). Do that by running this command: git grep -l '`.*`' tests \ | grep -Ev 'init\.sh|\.mk$' | xargs grep -Lw perl \ | xargs perl -pi -e 's/`(.*?)`/\$($1)/g' One minor fix-up change was required after that, due to how quoting differs: diff --git a/tests/chmod/equals b/tests/chmod/equals - expected_perms=$(eval 'echo \$expected_'$dest) + expected_perms=$(eval 'echo $expected_'$dest) Another was to make these required quoting adjustments: diff --git a/tests/misc/stty b/tests/misc/stty ... - rev=$(eval echo "\\\$REV_$opt") + rev=$(eval echo "\$REV_$opt") ... - rev1=$(eval echo "\\\$REV_$opt1") - rev2=$(eval echo "\\\$REV_$opt2") + rev1=$(eval echo "\$REV_$opt1") + rev2=$(eval echo "\$REV_$opt2") Also, transform two files that were needlessly excluded above: (both use perl, but are mostly bourne shell) perl -pi -e 's/`(.*?)`/\$($1)/g' \ tests/du/long-from-unreadable tests/init.cfg

dd: fix issues in the count_bytes and seek_bytes flags change

2012-02-13T21:58:21Z

These edge cases were missed in the previous commit 140eca15c. * src/dd.c (main): Include the bytes slop when truncating without further I/O. Don't invalidate the whole file cache in the case where 0 < count < ibs. * tests/dd/bytes: Change to using the independent truncate command to generate the file for comparison. Remove a redundant test case and replace with one testing the truncation only logic.

dd: add count_bytes, skip_bytes and seek_bytes flags

2012-02-12T17:34:28Z

dd now accepts the count_bytes and skip_bytes input flag and the seek_bytes output flag, to more easily allow processing portions of a file. * src/dd.c (scanargs): Compute skip_records and skip_bytes when 'skip_bytes' iflag is used. Compute max_records and max_bytes when 'count_bytes' iflag is used. Compute seek_records and seek_bytes when 'seek_bytes' oflag is used. (skip_via_lseek): Use new 'bytes' parameter and handle potential 'records' equals to zero. Update the bytes parameter when called with 'fdesc' equal to STDOUT_FILENO. Update the header comments. (dd_copy): Skip accordingly to skip_records AND skip_bytes. Count accordingly to max_records AND max_bytes. Seek on output accordingly to seek_records AND seek_bytes. * NEWS (New features): Mention it. * doc/coreutils.texi (dd invocation): Detail new flags and behaviors. * tests/dd/bytes: New file. Tests for these new flags. * tests/Makefile.am (TESTS): Add it.