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Is shell's next line character '\' the cause of this issue ?

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Top Forums Shell Programming and Scripting Is shell's next line character '\' the cause of this issue ?
# 8  
Old 09-13-2012
@224an has the solution.
In the second instance there is definitely a trailing space at the end of the second line.

To inspect the script, try this sed command which is designed to make end-of-line characters visible (they show as a dollar sign) which in turn lets you see any spurious characters after the \ character.
Code:
sed -n l scriptname


Ps. The reverse solidus is known (somewhat confusingly) as the escape character. In this case the \ protects the next character from interpretation by the Shell. The next character being a line-feed, it stops the Shell ending the command string.
This User Gave Thanks to methyl For This Post:
omega3
# 9  
Old 12-07-2012
Thanks Methyl.
I had same issue again today. So , I ran the sed script on the script.



--Original script
Code:
 
$ cat impdpContinued.sh
impdp WMS_OAT_01/WMS_OAT_01_123 \
DIRECTORY=BRCF_EFX_DIR \
DUMPFILE=BRCF_LM_WMS_SCHEMAS-December7-2012.dmp \
LOGFILE=BRCF_LM_WMS_SCHEMAS-SIT.log \
REMAP_SCHEMA=WMS_OAT_01:WMS_SIT_02 \
REMAP_SCHEMA=WMS_OAT_SESS_01:WMS_SIT_SESS_02
 
impdp WMS_OAT_01/WMS_OAT_01_123 \
DIRECTORY=BRCF_EFX_DIR \
DUMPFILE=BRCF_LM_WMS_SCHEMAS-December7-2012.dmp \
LOGFILE=BRCF_LM_WMS_SCHEMAS-UAT.log \
REMAP_SCHEMA=WMS_OAT_01:WMS_UAT_02 \
REMAP_SCHEMA=WMS_OAT_SESS_01:WMS_UAT_SESS_02

--- Running the sed command as methyl suggested to find unwanted characters
Code:
 
$ sed -n l impdpContinued.sh
impdp WMS_OAT_01/WMS_OAT_01_123 \\$
DIRECTORY=BRCF_EFX_DIR \\ $
DUMPFILE=BRCF_LM_WMS_SCHEMAS-December7-2012.dmp \\$
LOGFILE=BRCF_LM_WMS_SCHEMAS-SIT.log \\$
REMAP_SCHEMA=WMS_OAT_01:WMS_SIT_02 \\$
REMAP_SCHEMA=WMS_OAT_SESS_01:WMS_SIT_SESS_02$
$
$
impdp WMS_OAT_01/WMS_OAT_01_123 \\$
DIRECTORY=BRCF_EFX_DIR \\ $
DUMPFILE=BRCF_LM_WMS_SCHEMAS-December7-2012.dmp \\$
LOGFILE=BRCF_LM_WMS_SCHEMAS-UAT.log \\$
REMAP_SCHEMA=WMS_OAT_01:WMS_UAT_02 \\$
REMAP_SCHEMA=WMS_OAT_SESS_01:WMS_UAT_SESS_02$

So, do u see any unwanted characters in the sed output? What does the extra second slash before the dollar sign (generated by sed ) mean ?

Ignore the underline for \\$ . It is some formatting thing with this forum's editor , which I can't seem to remove.
Last edited by John K; 12-07-2012 at 11:50 AM..
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