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Shell Programming and Scripting

Removing lines with sed

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# 1  
Old 08-22-2008
Removing lines with sed
Here is some code output that I have:

Code:
architecture ppc
    cputype CPU_TYPE_POWERPC
    cpusubtype CPU_SUBTYPE_POWERPC_ALL
    offset 4096
    size 184464
    align 2^12 (4096)
architecture ppc64
    cputype CPU_TYPE_POWERPC64
    cpusubtype CPU_SUBTYPE_POWERPC_ALL
    offset 192512
    size 253776
    align 2^12 (4096)
architecture i386
    cputype CPU_TYPE_I386
    cpusubtype CPU_SUBTYPE_I386_ALL
    offset 446464
    size 179776
    align 2^12 (4096)
architecture x86_64
    cputype CPU_TYPE_X86_64
    cpusubtype CPU_SUBTYPE_X86_64_ALL
    offset 626688
    size 232912
    align 2^12 (4096)

I basically need to slim this down to this:

Code:
architecture ppc
    cputype CPU_TYPE_POWERPC
    cpusubtype CPU_SUBTYPE_POWERPC_ALL
    offset 4096
    size 184464
    align 2^12 (4096)
architecture i386
    cputype CPU_TYPE_I386
    cpusubtype CPU_SUBTYPE_I386_ALL
    offset 446464
    size 179776
    align 2^12 (4096)

What has to be done is all the "architecture" entries and the 5 lines that follow each one must be eliminated except for the "architecture ppc" and "architecture i386" entries
# 2  
Old 08-23-2008
One way with awk:

Code:
awk -v arch1="architecture ppc" -v arch2="architecture i386" '
$0==arch1{print;for(i=1;i<=5;i++){getline;print}}
$0==arch2{print;for(i=1;i<=5;i++){getline;print}}' file

Regards
# 3  
Old 08-23-2008
Just shorther:
Code:
awk '/ppc$/ || /i386$/{print; for(i=1;i<=5;i++){getline;print}}'  file

# 4  
Old 08-23-2008
Code:
awk 'c&&c--;/i386$|ppc$/{print ;c=5}' file

not tested.
# 5  
Old 08-23-2008
Quote:
Originally Posted by ghostdog74
Code:
awk 'c&&c--;/i386$|ppc$/{print ;c=5}' file

not tested.
Tested, OK
# 6  
Old 08-25-2008
Code:
sed -n -e '/^architecture i386$/{p
n
p
n
p
n
p
n
p
n
p
}' -e '/^architecture ppc$/{p
n
p
n
p
n
p
n
p
n
p
}' file

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