issue when piping from a windows program
Leonid Mironov
lvm@royal.net
Tue Apr 11 07:15:03 GMT 2023
I am trying to feed the output of wmic.exe - a windows console program, to cygwin bash script.
wmic.exe produces UTF16LE output with BOM and CR/LFs, so I am using dos2unix to convert it.
The problem is that when I write wmic.exe output to a file and then use dos2unix to convert this file
I get the expected result - ASCII file with LFs, I get the same result when I pipe this file to dos2unix,
but when I pipe wmic.exe output directly to dos2unix I get ASCII file with CR/LFs and an extra empty line.
Cygwin is up to date, windows 10. What gives?
Here are the hexdumps
of 'wmic /NAMESPACE:\\\\root\\WMI PATH BatteryStatus get charging,voltage,remainingcapacity,chargerate>file'
00000000 ff fe 43 00 68 00 61 00 72 00 67 00 65 00 52 00 |..C.h.a.r.g.e.R.|
00000010 61 00 74 00 65 00 20 00 20 00 43 00 68 00 61 00 |a.t.e. . .C.h.a.|
00000020 72 00 67 00 69 00 6e 00 67 00 20 00 20 00 52 00 |r.g.i.n.g. . .R.|
00000030 65 00 6d 00 61 00 69 00 6e 00 69 00 6e 00 67 00 |e.m.a.i.n.i.n.g.|
00000040 43 00 61 00 70 00 61 00 63 00 69 00 74 00 79 00 |C.a.p.a.c.i.t.y.|
00000050 20 00 20 00 56 00 6f 00 6c 00 74 00 61 00 67 00 | . .V.o.l.t.a.g.|
00000060 65 00 20 00 20 00 0d 00 0a 00 30 00 20 00 20 00 |e. . .....0. . .|
00000070 20 00 20 00 20 00 20 00 20 00 20 00 20 00 20 00 | . . . . . . . .|
00000080 20 00 46 00 41 00 4c 00 53 00 45 00 20 00 20 00 | .F.A.L.S.E. . .|
00000090 20 00 20 00 20 00 33 00 37 00 37 00 33 00 34 00 | . . .3.7.7.3.4.|
000000a0 20 00 20 00 20 00 20 00 20 00 20 00 20 00 20 00 | . . . . . . . .|
000000b0 20 00 20 00 20 00 20 00 20 00 20 00 31 00 32 00 | . . . . . .1.2.|
000000c0 37 00 34 00 30 00 20 00 20 00 20 00 20 00 0d 00 |7.4.0. . . . ...|
000000d0 0a 00 |..|
000000d2
of wimic>file followed by dos2unix<file or cat file|dos2unix
00000000 43 68 61 72 67 65 52 61 74 65 20 20 43 68 61 72 |ChargeRate Char|
00000010 67 69 6e 67 20 20 52 65 6d 61 69 6e 69 6e 67 43 |ging RemainingC|
00000020 61 70 61 63 69 74 79 20 20 56 6f 6c 74 61 67 65 |apacity Voltage|
00000030 20 20 0a 30 20 20 20 20 20 20 20 20 20 20 20 46 | .0 F|
00000040 41 4c 53 45 20 20 20 20 20 33 37 37 33 34 20 20 |ALSE 37734 |
00000050 20 20 20 20 20 20 20 20 20 20 20 20 31 32 37 34 | 1274|
00000060 30 20 20 20 20 0a |0 .|
00000066
and of wimic|dos2unix
00000000 43 68 61 72 67 65 52 61 74 65 20 20 43 68 61 72 |ChargeRate Char|
00000010 67 69 6e 67 20 20 52 65 6d 61 69 6e 69 6e 67 43 |ging RemainingC|
00000020 61 70 61 63 69 74 79 20 20 56 6f 6c 74 61 67 65 |apacity Voltage|
00000030 20 20 0d 0a 30 20 20 20 20 20 20 20 20 20 20 20 | ..0 |
00000040 46 41 4c 53 45 20 20 20 20 20 33 37 37 33 34 20 |FALSE 37734 |
00000050 20 20 20 20 20 20 20 20 20 20 20 20 20 31 32 37 | 127|
00000060 34 30 20 20 20 20 0d 0a 0d 0a |40 ....|
0000006a
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