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linux:scripts:basics
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| Both sides previous revisionPrevious revision | |||
| linux:scripts:basics [2018/12/20 17:44] – Discussion status changed lunetikk | linux:scripts:basics [2021/01/07 14:55] (current) – lunetikk | ||
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| Line 9: | Line 9: | ||
| | case - esac | inserts case | | | case - esac | inserts case | | ||
| | if [ " | | if [ " | ||
| + | |||
| + | ==== if conditions ==== | ||
| + | |||
| + | ^ Operator | ||
| + | | -eq | Returns true if two numbers are equivalent | ||
| + | | -lt | Returns true if a number is less than another number | ||
| + | | -gt | Returns true if a number is greater than another number | ||
| + | | == | Returns true if two strings are equivalent | ||
| + | | != | Returns true if two strings are not equivalent | ||
| + | | ! | Returns true if the expression is false | | ||
| + | | -d | Check the existence of a directory | ||
| + | | -e | Check the existence of a file | | ||
| + | | -r | Check the existence of a file and read permission | ||
| + | | -w | Check the existence of a file and write permission | ||
| + | | -x | Check the existence of a file and execute permission | ||
| + | | -z | string is null, that is, has zero length | ||
| + | | -n | string is not null. | | ||
| + | |||
| + | https:// | ||
| ===== Troubleshooting ===== | ===== Troubleshooting ===== | ||
linux/scripts/basics.1545324291.txt.gz · Last modified: 2018/12/20 17:44 by lunetikk
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