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author | Jim Meyering <jim@meyering.net> | 1994-06-30 14:33:41 +0000 |
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committer | Jim Meyering <jim@meyering.net> | 1994-06-30 14:33:41 +0000 |
commit | 1525e2cb3067e42cf1f43dd99e02db3abd17738b (patch) | |
tree | f89f1973919a2f137a59c4ad516ec3a73fea16ab /src | |
parent | 6b1785ed05ee73585fbb8d421ef37a40ef9c709b (diff) | |
download | coreutils-1525e2cb3067e42cf1f43dd99e02db3abd17738b.tar.xz |
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Diffstat (limited to 'src')
-rw-r--r-- | src/dd.c | 14 |
1 files changed, 8 insertions, 6 deletions
@@ -44,8 +44,8 @@ cbs, replacing newline with trailing spaces. unblock Replace trailing spaces in cbs-sized block with newline. - lcase Change uppercase characters to lowercase. - ucase Change lowercase characters to uppercase. + lcase Change upper case characters to lower case. + ucase Change lower case characters to upper case. swab Swap every pair of input bytes. Unlike the Unix dd, this works when an odd number of bytes are read. @@ -541,8 +541,10 @@ copy () int nread; /* Bytes read in the current block. */ int exit_status = 0; - /* Leave an extra byte at the beginning and end of `ibuf' for conv=swab. */ - ibuf = (unsigned char *) xmalloc (input_blocksize + 2) + 1; + /* Leave an extra byte at the beginning and end of `ibuf' for conv=swab, + but keep the buffer address even. Some peculiar device drivers work + only with word-aligned buffers. */ + ibuf = (unsigned char *) xmalloc (input_blocksize + 4) + 2; if (conversions_mask & C_TWOBUFS) obuf = (unsigned char *) xmalloc (output_blocksize); else @@ -1107,8 +1109,8 @@ by w for x2, by b for x512, by k for x1024. Each KEYWORD may be:\n\ ibm from ASCII to alternated EBCDIC\n\ block pad newline-terminated records with spaces to cbs-size \n\ unblock replace trailing spaces in cbs-size records with newline\n\ - lcase change uppercase to lowercase\n\ - ucase change lowercase to uppercase\n\ + lcase change upper case to lower case\n\ + ucase change lower case to upper case\n\ swab swap every pair of input bytes\n\ noerror continue after read errors\n\ sync pad every input block with NULs to ibs-size\n"); |