Commands within if condition
本问题已经有最佳答案，请猛点这里访问。
我刚开始写脚本
有人能帮我看看我下面的剧本有什么问题吗？我出错了。
1 2 3 4 5 6 7 | if `tail -2 jeevagan/sample/logs.txt | head -1 | grep"Start Outputing Report"` = TRUE && `tail -1 jeevagan/sample/logs.txt | grep"Start Outputing Report"` = TRUE then echo"report error" else echo"report good" fi |
在日志文件中，我有如下日志：
1 2 3 4 5 6 7 | 2016-04-07 06:57:36,248 INFO : Finished Outputing Report:, Format:EXCEL, Locale: en_IN 2016-04-07 07:06:52,812 INFO : Start Outputing Report:, Format:EXCEL, Locale: en_IN 2016-04-07 06:52:56,451 INFO : Finished Outputing Report:, Format:EXCEL, Locale: en_IN 2016-04-07 06:52:56,451 INFO : Finished Outputing Report:, Format:EXCEL, Locale: en_IN 2016-04-07 07:06:52,812 INFO : Start Outputing Report:, Format:EXCEL, Locale: en_IN 2016-04-07 07:06:52,812 INFO : Start Outputing Report:, Format:EXCEL, Locale: en_IN 2016-04-07 07:06:52,812 INFO : Start Outputing Report:, Format:EXCEL, Locale: en_IN |
号
从人的"狂欢"在我的Solaris系统： P / < >
1 2 3 | command1 && command2 command2 is executed if, and only if, command1 returns an exit status of zero. |
到examine的退出状态运行的命令，然后 P / < >
1 | echo $? |
所以 P / < >
1 | tail -2 log.txt | head -1 | grep"Start Outputing Report" |
returns 0 P / < >
所以你可以像在一起，所以他们的字符串 P / < >
1 | tail -2 log.txt | head -1 | grep"Start Output" && tail -1 log.txt | grep"Start Output" && echo"report error" |
或脚本，他们出来的东西像 P / < >
1 2 3 4 5 6 7 8 9 | tail -2 log.txt | head -1 | grep"Start Output" && tail -1 log.txt | grep"Start Output" return=$? if [[ $return == 0 ]]; then echo"report error" else echo"report good" fi |