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# 1  
Old 12-22-2009
one liner needed
Hi

I have a file say (a.txt) which has following

a.txt
----

$$var1=Tom
$$var2=Kim

I need a one liner which searches the file(a.txt) for $$var1 and returns the value in it(Tom).

Thanks in advance
Ammu
# 2  
Old 12-22-2009
Code:
AWK -F = '/\$\$var1/ {print $2}' /tmp/a.txt

Substitute AWK with nawk or gawk or awk depending on the OS used.
# 3  
Old 12-22-2009
sed:
Code:
sed -n 's/\$\$var1=//p' a.txt

# 4  
Old 12-22-2009
Quote:
Originally Posted by ammu
Hi

I have a file say (a.txt) which has following

a.txt
----

$$var1=Tom
$$var2=Kim

I need a one liner which searches the file(a.txt) for $$var1 and returns the value in it(Tom).

Thanks in advance
Ammu
Code:
perl -wln -e 'print $1 if /^.*\=(.+)$/' a.txt

# 5  
Old 12-22-2009
Thanks for quick reply.
It is failing with below error

awk: syntax error near line 1
awk: bailing out near line 1
# 6  
Old 12-22-2009
Strange:
Code:
$ awk -F= '/\$\$var1/{print $2}' a.txt
Tom

# 7  
Old 12-23-2009
Hello ,
Code:
gaurav@localhost:~$ cat > a.txt
var1=tom
var2=kim
gaurav@localhost:~$ perl -wl -e 'open(FILE,"<a.txt");my $var=<STDIN>;chomp $var;while(<FILE>){print $1 if /^$var=(.+)/}'
var1
tom

This will take the name as input like var1 and give "tom"
Hope this is what you exactly want.
Regards.
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