expand [-t tab1,tab2,…,tabn] [file …]
unexpand [-a | -t tab1,tab2,…,tabn] [file …]
Tabs(0x09
) are replaced with the number of spaces to retain colums. Backspaces
are preserved into the output and decrement the column count for tab calculations. useful for pre-processing files (before sorting, looking at specific columns, etc.) that contain tabs.
unexpand
For numeric values, which are right justified, does not insert tabs!
unexpand
puts tabs in.
-a |
cat file0 xxx xx xx x x y z q /Volumes/DATA/dgerman > hexdump -C file0 00000000 78 78 78 09 78 78 09 78 78 09 78 0a 78 09 79 09 |xxx.xx.xx.x.x.y.| 00000010 7a 09 71 0a 0a |z.q..| expand file0 >file00 /Volumes/DATA/dgerman > cat file00 xxx xx xx x x y z q /Volumes/DATA/dgerman > hexdump -C file00 00000000 78 78 78 20 20 20 20 20 78 78 20 20 20 20 20 20 |xxx xx | 00000010 78 78 20 20 20 20 20 20 78 0a 78 20 20 20 20 20 |xx x.x | 00000020 20 20 79 20 20 20 20 20 20 20 7a 20 20 20 20 20 | y z | 00000030 20 20 71 0a 0a | q..| unexpand file09 # has spaces. ID Mac Address Name RSS °F % Z Battery Movement Measurement # Samples Period fc75f7f98bef47529bab6cea054bb65a F7:FA:74:4A:1E:1A fc75 -56 72.1 44.5 1016 2.827 173 7380 800 16 11 21eed0d15de149c998fdde95ae72bc63 D0:FD:6D:65:06:DC 21ee -79 67.6 41.5 -44 2.932 147 11951 800 7 11 da798d1d39354757aa6f294e73617493 D3:51:78:72:EC:0F porchO -79 62.7 74.4 968 2.935 - 2752 800 7 7 3bb8010cedd74fc1b8f4cf693cf98bc1 C8:76:E5:96:B2:C3 3bb8 -89 68.8 36.6 220 2.626 41 30632 800 14 8 d7eacacda5364f9fb92701178c19d17f E4:D5:6D:EC:6E:29 d7ea -83 65.7 35.3 -164 3.079 36 61927 800 19 18 b3310fb7925044a38e93b0b1e404d55b E4:9E:D5:86:E4:CE b331 -75 55.0 53.7 128 2.647 156 61013 800 18 1 ebc49873a5be4404b16b378a41d57ea3 - furnace -88 79.2 25.5 1008 2.785 - - 800 87 23 f250d6b007b1404c994a01eabc0df913 F2:C0:C6:43:AD:03 f250 -94 38.1 27.2 -1036 2.395 93 20115 7 10299 5478 unexpand file09|expand # add tabs , then change to spaces still right justified ID Mac Address Name RSS °F % Z Battery Movement Measurement # Samples Period fc75f7f98bef47529bab6cea054bb65a F7:FA:74:4A:1E:1A fc75 -56 72.1 44.5 1016 2.827 173 7380 800 16 11 21eed0d15de149c998fdde95ae72bc63 D0:FD:6D:65:06:DC 21ee -79 67.6 41.5 -44 2.932 147 11951 800 7 11 da798d1d39354757aa6f294e73617493 D3:51:78:72:EC:0F porchO -79 62.7 74.4 968 2.935 - 2752 800 7 7 3bb8010cedd74fc1b8f4cf693cf98bc1 C8:76:E5:96:B2:C3 3bb8 -89 68.8 36.6 220 2.626 41 30632 800 14 8 d7eacacda5364f9fb92701178c19d17f E4:D5:6D:EC:6E:29 d7ea -83 65.7 35.3 -164 3.079 36 61927 800 19 18 b3310fb7925044a38e93b0b1e404d55b E4:9E:D5:86:E4:CE b331 -75 55.0 53.7 128 2.647 156 61013 800 18 1 ebc49873a5be4404b16b378a41d57ea3 - furnace -88 79.2 25.5 1008 2.785 - - 800 87 23 f250d6b007b1404c994a01eabc0df913 F2:C0:C6:43:AD:03 f250 -94 38.1 27.2 -1036 2.395 93 20115 7 10299 5478