Regex 如何使用SED或AWK追加行，直到特定模式不匹配为止？

我想附加不以给定模式开头的行。但我无法使用

sed

实现这一点。请帮助我使用

sed

或

awk

解决问题。例如：

输入：

18:55:42[pool-1-thread-2] INFO jfileupload.download.http.a - Download completed
18:55:42[HTTPDOWNLOAD] ERROR jfileupload.download.ui.DownloadTransferUI - 
java.io.IOException: Failed to show URI:file:/home/rahul/Desktop/
    at sun.awt.X11.XDesktopPeer.launch(XDesktopPeer.java:114)
    at sun.awt.X11.XDesktopPeer.open(XDesktopPeer.java:77)
    at java.awt.Desktop.open(Desktop.java:272)
    at jfileupload.download.ui.DownloadTransferUI.a(Unknown Source)
    at jfileupload.download.http.HTTPDownloadTransfer.a(Unknown Source)
    at jfileupload.download.a.a.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:745)
18:55:43[MultiThreadedHttpConnectionManager cleanup] DEBUG org.apache.commons.httpclient.MultiThreadedHttpConnectionManager - ReferenceQueueThread interrupted
java.lang.InterruptedException
    at java.lang.Object.wait(Native Method)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:151)
    at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$ReferenceQueueThread.run(MultiThreadedHttpConnectionManager.java:1122)

18:55:42[pool-1-thread-2] INFO jfileupload.download.http.a - Download completed
18:55:42[HTTPDOWNLOAD] ERROR jfileupload.download.ui.DownloadTransferUI -java.io.IOException: Failed to show URI:file:/home/rahul/Desktop/, at sun.awt.X11.XDesktopPeer.launch(XDesktopPeer.java:114),  at sun.awt.X11.XDesktopPeer.open(XDesktopPeer.java:77), at java.awt.Desktop.open,(Desktop.java:272),    at jfileupload.download.ui.DownloadTransferUI.a(Unknown Source),    at jfileupload.download.http.HTTPDownloadTransfer.a(Unknown Source),    at jfileupload.download.a.a.run(Unknown Source),    at java.lang.Thread.run(Thread.java:745)
18:55:43[MultiThreadedHttpConnectionManager cleanup] DEBUG org.apache.commons.httpclient.MultiThreadedHttpConnectionManager - ReferenceQueueThread interrupted,java.lang.InterruptedException,  at java.lang.Object.wait(Native Method),    at java.lang.ref.ReferenceQueue.remove,(ReferenceQueue.java:135),   at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:151),    at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$ReferenceQueueThread.run(MultiThreadedHttpConnectionManager.java:1122)

所需输出：

18:55:42[pool-1-thread-2] INFO jfileupload.download.http.a - Download completed
18:55:42[HTTPDOWNLOAD] ERROR jfileupload.download.ui.DownloadTransferUI - 
java.io.IOException: Failed to show URI:file:/home/rahul/Desktop/
    at sun.awt.X11.XDesktopPeer.launch(XDesktopPeer.java:114)
    at sun.awt.X11.XDesktopPeer.open(XDesktopPeer.java:77)
    at java.awt.Desktop.open(Desktop.java:272)
    at jfileupload.download.ui.DownloadTransferUI.a(Unknown Source)
    at jfileupload.download.http.HTTPDownloadTransfer.a(Unknown Source)
    at jfileupload.download.a.a.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:745)
18:55:43[MultiThreadedHttpConnectionManager cleanup] DEBUG org.apache.commons.httpclient.MultiThreadedHttpConnectionManager - ReferenceQueueThread interrupted
java.lang.InterruptedException
    at java.lang.Object.wait(Native Method)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:151)
    at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$ReferenceQueueThread.run(MultiThreadedHttpConnectionManager.java:1122)

18:55:42[pool-1-thread-2] INFO jfileupload.download.http.a - Download completed
18:55:42[HTTPDOWNLOAD] ERROR jfileupload.download.ui.DownloadTransferUI -java.io.IOException: Failed to show URI:file:/home/rahul/Desktop/, at sun.awt.X11.XDesktopPeer.launch(XDesktopPeer.java:114),  at sun.awt.X11.XDesktopPeer.open(XDesktopPeer.java:77), at java.awt.Desktop.open,(Desktop.java:272),    at jfileupload.download.ui.DownloadTransferUI.a(Unknown Source),    at jfileupload.download.http.HTTPDownloadTransfer.a(Unknown Source),    at jfileupload.download.a.a.run(Unknown Source),    at java.lang.Thread.run(Thread.java:745)
18:55:43[MultiThreadedHttpConnectionManager cleanup] DEBUG org.apache.commons.httpclient.MultiThreadedHttpConnectionManager - ReferenceQueueThread interrupted,java.lang.InterruptedException,  at java.lang.Object.wait(Native Method),    at java.lang.ref.ReferenceQueue.remove,(ReferenceQueue.java:135),   at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:151),    at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$ReferenceQueueThread.run(MultiThreadedHttpConnectionManager.java:1122)

在上面的输入中，我想用

，

将下一行附加到当前行，直到新行以这样的模式开始

18:55:42

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谢谢。

没有试过，但应该可以

awk '/[0-9]+:[0-9]+:[0-9]+/{x=$0}{a[x]=a[x]?a[x]", "$0:$0}END{for (i in a)print a[i]}' file

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你能解释一下上面的工作原理吗。这对我们大家都很有用。谢谢，它起作用了。