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Shell Programming and Scripting

Deleting a word from a string

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# 8  
Old 10-11-2012
Quote:
Originally Posted by bmk
@elixir_sinari
Can you explain this one
Don't get confused by the empty pattern and replacement fields Smilie.
After the match is successful (/libina\.a$/), the first // will correspond to the last pattern matched. That is, it is corresponding to the same pattern /libina\.a$/. And I hope you know what the blank replacement string is for.
The command is equivalent to:
Code:
echo ' /LDCA20/rel/prod/libina.a'|sed '/libina\.a$/s/libina\.a$//'

# 9  
Old 10-11-2012
Slight modifications (in any POSIX compliant shell, not just bash/ksh93)):
Code:
echo "${a%libina.a}"

Code:
sed 's/libina\.a$//'

# 10  
Old 10-11-2012
@elixir_sinari,,Thanks GOOD explanation..
# 11  
Old 10-11-2012
If it's the filename you always want to remove, you can just use this:
Code:
$ dirname ' /LDCA20/rel/prod/libina.a'
 /LDCA20/rel/prod

Last edited by Franklin52; 10-11-2012 at 10:10 AM.. Reason: Please use code tags for data and code samples
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