Difference between revisions of "Main.go file for app to read log file"
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(5 intermediate revisions by the same user not shown) | |||
Line 1: | Line 1: | ||
<source lang="go"> | <source lang="go"> | ||
− | package | + | package main |
− | import "os" | + | import ( |
+ | "os" | ||
+ | "log" | ||
+ | "bufio" | ||
+ | "strings" | ||
+ | "fmt" | ||
+ | ) | ||
func main() { | func main() { | ||
Line 9: | Line 15: | ||
log.Fatal(err) | log.Fatal(err) | ||
} | } | ||
+ | defer f.Close() | ||
+ | r := bufio.NewReader(f) | ||
+ | for { | ||
+ | s, err := r.ReadString('\n') | ||
+ | if err != nil { | ||
+ | break | ||
+ | } | ||
+ | if strings.Contains(s, "ERROR") { | ||
+ | fmt.Println(s) | ||
+ | } | ||
+ | |||
+ | |||
+ | |||
+ | } | ||
Latest revision as of 15:09, 29 March 2022
package main import ( "os" "log" "bufio" "strings" "fmt" ) func main() { f, err := os.Open("myapp.log") if err != nil { log.Fatal(err) } defer f.Close() r := bufio.NewReader(f) for { s, err := r.ReadString('\n') if err != nil { break } if strings.Contains(s, "ERROR") { fmt.Println(s) } } }
There are no exceptions in go