AWK & Bash


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We continue to explore another interesting example of text processing. That is, extract the package name from the full .rpm package file name, in two ways: using AWK and using Bash.
We take the package file omarine-update-3.2-1.x86_64.rpm to illustrate, and will extract to get "omarine-update"



Using AWK
You compose a source file named pkgname.awk with the following content:


{    
OLDFS = FS
FS = "-"
$0 = $0
printf "%s", $1
for (i = 2; i <= NF - 2; i++)
printf "%s", "-"$i
print ""
FS = OLDFS
}


Run the program:


echo omarine-update-3.2-1.x86_64.rpm | awk -f pkgname.awk



Using Bash
We can use Bash itself to output "omarine-update". You run these commands:


fullname=omarine-update-3.2-1.x86_64.rpm
pkgname=${fullname%-*}
echo ${pkgname%-*}



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