replace a string

melanie_pfefer · #1 (**permalink**) 01-17-2008

hello

I have a file where an entry needs to be modified. an example of this entry is:

install_location=/xena/sybase/ase12_5

I need to replace xena with another hostname (`hostname` output) for example:

install_location=/dx1/sybase/ase12_5

how to do that?

thanks

Tytalus · #2 (**permalink**) 01-17-2008

Code:

 
eval sed 's/xena/`hostname`/' file

should work

ghostdog74 · #3 (**permalink**) 01-17-2008

no need for eval

Code:

sed "s/xena/`hostname`/" file

Tytalus · #4 (**permalink**) 01-17-2008

true - bad habit of mine overusing eval :-)

melanie_pfefer · #5 (**permalink**) 01-17-2008

thanks. but the string may change:

install_location=/xena/sybase/ase12_5

I want everything between =/ and /sybase to be replaced with the hostname

thx

Tytalus · #6 (**permalink**) 01-17-2008

bit clunky but:

Code:

 sed "s_=/.*/sybase_=/`hostname`/sybase_" file

should work

vino · #7 (**permalink**) 01-17-2008

Code:

sed -e "s/\(install_location=.\)[^/]*\(\/.*\)/\1`hostname`\2/g" file

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