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Select everything before a pattern

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# 1  
Old 02-27-2009
Select everything before a pattern
Hi I have i doubt, actually i have to select everything before a word(pattern).For that i am using sed
i am using the below line of code but it is not working i am getting a blank instead..

sed -n '/regexp/{g;1!p;};h' file1

Can anyone help?
Thanks
# 2  
Old 02-27-2009
I don't understand your approach, but I got this to work:

sed -n '/regex/{;s/regex.*//p;q;};p' /some/file
# 3  
Old 02-27-2009
Code:
sed -n -e '/regex/q'  -e '1,/regex/p'

# 4  
Old 03-01-2009
MySQL
Hi ,

got this to work:
sed -n -e '/regex/q' -e '1,/regex/p'

Thanks all for your quick reply..!!
# 5  
Old 05-10-2009
Hi All i have a similar doubt regarding sed.

Actually i have to select some line netween two gegex but my problem is everything except the ending regex should be selected.

i am using this

Code:
cat websphere_stdout.txt |sed -n '/0x291e0/,/^"/p'

It is giving me the output like this:

Code:
"P=913124:O=0:CT" prio=5 tid=0x291e0 nid=0x1 waiting on monitor [0xffbed000..0xffbeda84]
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:415)
        at com.ibm.ws.runtime.Server.awaitShutdown(Server.java:1710)
        at com.ibm.ejs.sm.server.ManagedServer.main(ManagedServer.java:172)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.ibm.ws.bootstrap.WSLauncher.main(WSLauncher.java:158)

"VM Thread" prio=5 tid=0xef0c0 nid=0x4 runnable


my the required output is this:

Code:
"P=913124:O=0:CT" prio=5 tid=0x291e0 nid=0x1 waiting on monitor [0xffbed000..0xffbeda84]
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:415)
        at com.ibm.ws.runtime.Server.awaitShutdown(Server.java:1710)
        at com.ibm.ejs.sm.server.ManagedServer.main(ManagedServer.java:172)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.ibm.ws.bootstrap.WSLauncher.main(WSLauncher.java:158)

The last line containing " should not come.

Can anyone advice.
# 6  
Old 05-10-2009
HTML Code:
sed -n '/0x291e0/,/^$/p' websphere_stdout.txt
# 7  
Old 05-11-2009
Hi Devtakh,

Thanks for you reply.

But here i have given a snippet of my file.


There are many lines like the one i pasted above.


and every new thread starts with ["]

So here if i give

Code:
sed -n '/0x291e0/,/^$/p' websphere_stdout.txt


it will print everything except the last line but that is not the case.

i have to select every thing before ["]


Thanks
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