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Help !!! need on sed Command

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Top Forums Shell Programming and Scripting Help !!! need on sed Command
# 1  
Old 04-23-2014
Help !!! need on sed Command
want to write certain number of lines to the outfile, when I tried to execute the following command in unix script, got error out.

$SRC_FILE variable is not returning value to the sed command, which supposed to be the source file name

Command:

Code:
sed -n \'"${BEGIN_FROM},${LAST_TO} w ${OUT_FILE}"\' "${SRC_FILE}"

Error Messsage:

Code:
sed: 0602-403 '1,3 w /opt/TgtFiles/test.txt_split1' is not a recognized function.
sed: 0602-403 '4,6 w /opt/TgtFiles/test.txt_split2' is not a recognized function.
sed: 0602-403 '7,9 w /opt/TgtFiles/test.txt_split3' is not a recognized function.

Last edited by Scrutinizer; 04-23-2014 at 12:38 PM.. Reason: code tags
# 2  
Old 04-23-2014
Try leaving out the occurrences of \'
# 3  
Old 04-23-2014
The script is running without error, but no outfile generated. Below is the printed output of the command...

Code:
sed -n "${BEGIN_FROM},${LAST_TO} w ${OUT_FILE}" "${SRC_FILE_PTH}"

==>
Code:
sed -n 1,3 w /opt/TgtFiles/test.txt_split1 /opt/TgtFiles/test.txt

when I execute the command ==>
Code:
sed -n 1,3 w /opt/TgtFiles/test.txt_split1 /opt/TgtFiles/test.txt

got error message:
Code:
sed: 0602-403 1,3 is not a recognized function.

Code:
sed -n '1,3 w /opt/TgtFiles/test.txt_split1' /opt/TgtFiles/test.txt

- If I run the command with the single quote around line number and target file, then the command executes fine...

Problem is in executing the command with variables.....
Last edited by Scrutinizer; 04-23-2014 at 01:00 PM.. Reason: code tags
# 4  
Old 04-23-2014
Code:
sed -n "${BEGIN_FROM},${LAST_TO} w ${OUT_FILE}" "${SRC_FILE_PTH}"

is not the same as and does not translate into:

Code:
sed -n 1,3 w /opt/TgtFiles/test.txt_split1 /opt/TgtFiles/test.txt

The latter is incorrect, because the quotes are missing.

My guess is that one of your variables is not set correctly.

execute
Code:
set -x

first and then try again to see what is going on..
# 5  
Old 04-23-2014
when I printed
Code:
==>  print "sed -n '$BEGIN_FROM,$LAST_TO w $OUT_FILE' $SRC_FILE_PTH"

following is the output

Code:
+ print sed -n '10,14 w /opt/TgtFiles/test.txt_split4' /opt/TgtFiles/test.txt

command
Code:
==> sed -n "${BEGIN_FROM},${LAST_TO} w ${OUT_FILE}" "${SRC_FILE_PTH}"

following is the outout

Code:
+ sed -n 10,14 w /opt/TgtFiles/test.txt_split4 /opt/TgtFiles/test.txt

Last edited by YYnewbee14; 04-23-2014 at 01:29 PM.. Reason: code tags
# 6  
Old 04-23-2014
I cannot reproduce this..

That should be something like:
Code:
==> sed -n "${BEGIN_FROM},${LAST_TO} w ${OUT_FILE}" "${SRC_FILE_PTH}"
+ sed -n '10,14 w /opt/pcenter/sit2/rebates/TgtFiles/test.txt_split4' '/opt/pcenter/sit2/rebates/TgtFiles/test.txt'

Is what you posted what your shell printed after set -x was issued?

What is your OS and version and what shell are you using?
# 7  
Old 04-23-2014
I just tried it on AIX 7, the prompt indeed says:
Code:
+ sed -n 10,14 w /opt/pcenter/sit2/rebates/TgtFiles/test.txt_split4 /opt/pcenter/sit2/rebates/TgtFiles/test.txt

So the quoting information is not accurate (if you really execute it like the prompt suggest, the command would not work), but the command works and the output file contains the expected output..
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