user:jkendal6:start
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| Both sides previous revisionPrevious revisionNext revision | Previous revisionLast revisionBoth sides next revision | ||
| user:jkendal6:start [2017/10/05 18:07] – jkendal6 | user:jkendal6:start [2017/10/26 17:50] – jkendal6 | ||
|---|---|---|---|
| Line 7: | Line 7: | ||
| rename a file: mv filename newfilename | rename a file: mv filename newfilename | ||
| + | -------------------------------------------------------------------------- | ||
| Line 40: | Line 40: | ||
| - decompress files of a .gz extension | - decompress files of a .gz extension | ||
| - | Variables | + | -------------------------------------------------------------------------- |
| + | |||
| + | __Variables__ | ||
| Set the variable: t=“what” (so it saves) | Set the variable: t=“what” (so it saves) | ||
| Line 46: | Line 48: | ||
| Execute and see it: echo “$t” (should say what t was set to) | Execute and see it: echo “$t” (should say what t was set to) | ||
| - | Text Manipulation | + | -------------------------------------------------------------------------- |
| + | |||
| + | __Text Manipulation__ | ||
| Rev command (Reverses text in a file): rev filename > exportedfile | Rev command (Reverses text in a file): rev filename > exportedfile | ||
| Line 55: | Line 59: | ||
| + | -------------------------------------------------------------------------- | ||
| __Wild Cards__ | __Wild Cards__ | ||
| Line 70: | Line 74: | ||
| - [^]- Inverted character class; do not match 1 of any of enclosed symbols. | - [^]- Inverted character class; do not match 1 of any of enclosed symbols. | ||
| + | -------------------------------------------------------------------------- | ||
| + | |||
| + | |||
| + | __Cut Command__ | ||
| + | |||
| + | If you wanted a specific row to cut out of a text document. | ||
| + | |||
| + | cut -c x (x meaning how many bits) filename > export filename | ||
| + | |||
| + | ------------------------------------------------------------------------- | ||
| + | |||
| + | __Head Command__ | ||
| + | |||
| + | This is to show parts of the document from the top end. | ||
| + | |||
| + | head -n x (x meaning how many rows to show from the top) filename > export. | ||
| + | |||
| + | ------------------------------------------------------------------------- | ||
| + | |||
| + | __Tail Command__ | ||
| + | |||
| + | To show text or data in a document to show from bottom of the document to the specified row height. | ||
| + | |||
| + | tail -n x (x meaning how many rows to show from the bottom) filename >export | ||
| + | |||
| + | ------------------------------------------------------------------------ | ||
| + | |||
| + | __get any conversions to a different base.__ | ||
| + | |||
| + | For base 2. (binary) | ||
| + | |||
| + | command : echo “obase=2; | ||
| + | |||
| + | For base 8. (octal) | ||
| + | |||
| + | command : echo “obase=8; | ||
| + | |||
| + | For base 10. (decimal) | ||
| + | |||
| + | command : echo “obase=10; | ||
| + | |||
| + | For base 16. (hexidecimal) | ||
| + | command : echo “obase=16; | ||
| + | --------------------------------------------------------------------- | ||
user/jkendal6/start.txt · Last modified: 2017/10/26 17:57 by jkendal6
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