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some help with the sed command please


 
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Top Forums UNIX for Dummies Questions & Answers some help with the sed command please
# 1  
Old 09-20-2009
some help with the sed command please

hi all,

attached you can find a small txt file ( [config].txt ),
GIVEN that past_scheduler="islip" and scheduler="mucf"
can somebody please tell me
WHY sed 's/-u '$past_scheduler'/-u '$scheduler'/g' [config].txt > [config].txt.temp fails ?

thanx
# 2  
Old 09-20-2009
Hi,

The pattern '-u...islip' does not occur in your file.

'islip' only appears on line 9:
Code:
         Algorithm       islip -n 4

Removing the '-u ' from the pattern works fine.

hth,
dv
# 3  
Old 09-21-2009
thanx, i was careless enough Smilie

i would like to ask you if you know how can i make the following message :
mkdir: <folder_name>: File exists
not to be displayed, when i run the script ?
( i conditionally create some folders when necessary, but it wuld be nice if i get rid of this message, is that possible ? )
# 4  
Old 09-21-2009
Hi OneDreamCloser,
Code:
mkdir -p /path/to/folder/to/create

This will:
1. Not prompt if existing
2. Create parent directories if necessary
 

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