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linux:awk (lu 31262 fois)
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Ci-dessous, les différences entre deux révisions de la page.
| Prochaine révision Les deux révisions suivantes | |||
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linux:awk [02-05-2017 15:09] edmc73 créée |
linux:awk [02-05-2017 15:12] edmc73 |
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| Ligne 23: | Ligne 23: | ||
| < | < | ||
| - | %i or d --Decimal%o --Octal | + | %i or d --Decimal |
| + | %o --Octal | ||
| %x --hex | %x --hex | ||
| %c --ASCII number character | %c --ASCII number character | ||
| Ligne 33: | Ligne 34: | ||
| Lets start with some examples. for this post our test file contents are | Lets start with some examples. for this post our test file contents are | ||
| - | < | + | |
| - | Jones 21 78 84 77 | + | '' |
| Gondrol 23 56 58 45 | Gondrol 23 56 58 45 | ||
| RinRao 25 21 38 37 | RinRao 25 21 38 37 | ||
| Edwin 25 87 97 95 | Edwin 25 87 97 95 | ||
| - | Dayan 24 55 30 47 | + | Dayan 24 55 30 47'' |
| - | </ | + | |
| Example 1: Print first column values from db.txt file. | Example 1: Print first column values from db.txt file. | ||
| Ligne 46: | Ligne 47: | ||
| Output: | Output: | ||
| - | < | + | |
| - | Jones | + | '' |
| Gondrol | Gondrol | ||
| RinRao | RinRao | ||
| Edwin | Edwin | ||
| - | Dayan | + | Dayan'' |
| - | </ | + | |
| Note: printf will not have default new line char, so you have to include tat when ever you execute printf command as shown above. | Note: printf will not have default new line char, so you have to include tat when ever you execute printf command as shown above. | ||
| Ligne 60: | Ligne 61: | ||
| Output: | Output: | ||
| - | < | + | |
| + | '' | ||
| 0 | 0 | ||
| 0 | 0 | ||
| 0 | 0 | ||
| - | 0 | + | 0'' |
| - | 0 | + | |
| - | </ | + | |
| So be careful when dealing with different data types. | So be careful when dealing with different data types. | ||
| Padding between columns using AWK printf | Padding between columns using AWK printf | ||
| Ligne 89: | Ligne 90: | ||
| Output: | Output: | ||
| - | < | + | |
| - | 217884 | + | '' |
| 235658 | 235658 | ||
| 252138 | 252138 | ||
| 258797 | 258797 | ||
| - | 245530 | + | 245530'' |
| - | </ | + | |
| With padding 5 spaces on right hand side: | With padding 5 spaces on right hand side: | ||
| Ligne 101: | Ligne 102: | ||
| Output: | Output: | ||
| - | < | + | |
| - | 21 | + | '' |
| 23 | 23 | ||
| 25 | 25 | ||
| 25 | 25 | ||
| - | 24 | + | 24 |
| - | </ | + | |
| Note: As for understanding purpose we given this example with padding and without padding. We will add “|” between columnts output so that that padding can be clearly seen as show in below example. | Note: As for understanding purpose we given this example with padding and without padding. We will add “|” between columnts output so that that padding can be clearly seen as show in below example. | ||
| Ligne 113: | Ligne 114: | ||
| Output: | Output: | ||
| - | < | + | |
| - | |21 | + | '' |
| |23 | |23 | ||
| |25 | |25 | ||
| |25 | |25 | ||
| - | |24 | + | |24 |
| - | </ | + | |
| Example 5: Pad 5 spaces on left hand side of each column. | Example 5: Pad 5 spaces on left hand side of each column. | ||
| Ligne 125: | Ligne 126: | ||
| Output: | Output: | ||
| - | < | + | |
| - | | | + | '' |
| | | | | ||
| | | | | ||
| | | | | ||
| - | | | + | | |
| - | </ | + | |
| Example 6: add zero’s on left hand side of each column element make it a 5 digit number. | Example 6: add zero’s on left hand side of each column element make it a 5 digit number. | ||
| Ligne 137: | Ligne 138: | ||
| Output: | Output: | ||
| - | < | + | |
| - | |00021|00078|00084| | + | '' |
| |00023|00056|00058| | |00023|00056|00058| | ||
| |00025|00021|00038| | |00025|00021|00038| | ||
| |00025|00087|00097| | |00025|00087|00097| | ||
| - | |00024|00055|00030| | + | |00024|00055|00030|'' |
| - | </ | + | |
| Example 7: Make the column element with 4 digit’s and 7 in length and print the number to left hand side. | Example 7: Make the column element with 4 digit’s and 7 in length and print the number to left hand side. | ||
| Ligne 149: | Ligne 150: | ||
| Output: | Output: | ||
| - | < | + | |
| - | |0021 | + | '' |
| |0023 | |0023 | ||
| |0025 | |0025 | ||
| |0025 | |0025 | ||
| - | |0024 | + | |0024 |
| - | </ | + | |
| Example 8: Make the column element with 4 digit’s and 7 in length and print the number to right hand side. | Example 8: Make the column element with 4 digit’s and 7 in length and print the number to right hand side. | ||
| Ligne 161: | Ligne 162: | ||
| Output: | Output: | ||
| - | < | + | |
| - | | | + | '' |
| | | | | ||
| | | | | ||
| | | | | ||
| - | | | + | | |
| - | </ | + | |
| Hope these examples help you to understand about formatting output and padding using printf statement in AWK scripting. Keep visiting www.linuxnix.com for more scripting tutorials and tips. | Hope these examples help you to understand about formatting output and padding using printf statement in AWK scripting. Keep visiting www.linuxnix.com for more scripting tutorials and tips. | ||
linux/awk.txt · Dernière modification: 05-03-2018 14:55 de edmc73
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