To: lawsongeek
The file produced by:
not only includes an unwanted trailing comma, it is also missing a trailing <newline> character. Therefore, by definition, the output is not a text file. This might or might not be important depending on what you are going to do with the output from this command.
To: junior-helper
The code:
might work on some systems, but it is not portable. The output of the tr command will not have a trailing <newline> character (so by definition, the output is not a text file). And, according to the standards, the behavior of sed is unspecified if any of its input files is not a text file.
A couple of ways to portably merge a file containing one or more lines into a single line text file are:
and:
Note, however, that if the size of the input file is larger than the LINE_MAX limit on your system (which can be as small as 2048 bytes), the resulting output file still will not be a text file (and in the 2nd pipeline, the behavior of sed is still unspecified if the size of the input file is LINE_MAX or larger).
These 2 Users Gave Thanks to Don Cragun For This Post:
One more approach not effective as Don's but may help.
Thanks Don for nice approach.
... ... ...
Thanks,
R. Singh
Hi RavinderSingh,
If you want to take this approach, wouldn't this be more efficient:
I don't see the need for the for loop; did I miss something?
The reason I didn't use this approach is that the script I suggested before will produce the desired output successfully even if the total length of the output is longer than LINE_MAX bytes as long as no single input line is longer than LINE_MAX. The behavior with this script is again unspecified if the length of the string stored in a is (LINE_MAX -1) or more bytes (which will happen whenever the size of the input file is LINE_MAX or more bytes).
----------------------------------------------
Update: Removed extraneous } as suggested by RavinderSingh13 in next message.
Last edited by Don Cragun; 08-21-2014 at 07:53 AM..
Reason: Fix typo }} -> }
I don't see the need for the for loop; did I miss something?
The reason I didn't use this approach is that the script I suggested before will produce the desired output successfully even if the total length of the output is longer than LINE_MAX bytes as long as no single input line is longer than LINE_MAX. The behavior with this script is again unspecified if the length of the string stored in a is (LINE_MAX -1) or more bytes (which will happen whenever the size of the input file is LINE_MAX or more bytes).
Thank you Don for really nice solution, but seems there is an extra } character, so removed the same now.
Thanks,
R. Singh
This User Gave Thanks to RavinderSingh13 For This Post:
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#!/bin/sh
WAS_HOME="/opt/websphere/appserver/profiles/AppSrv01"
WAS_APP_SERVER="server1"
WAS_PROFILE_NAME="AppSrv01"
echo "Stopping App Server"
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main.sh
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getLS.sh
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I have a source file with 'Aug 1 2004' kind format.
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