Increment version number in file via bash command

Question

I have a XML file that has a version number in the following format:

<Product Id="*" Name="Name" Language="1033" Version="1.2.3.4">

I want to find the last number in the version string (i.e. "4" in this example) and then increment it by one - replacing it in the file. Ideally using simple bash commands (AWK?).

do you only want to bump the last number in the version string? but what if you want to bump the minor-version (1.2.3.9 -> 1.3.0.0)? — umläute
– umläute, Commented Sep 12, 2015 at 18:44
For minor upgrades I would do a manual build. For the patch builds, I've had them automated for my particular use case. — Wahaj Ali
– Wahaj Ali, Commented Sep 12, 2015 at 18:47

Avinash Raj · Accepted Answer · 2015-09-12 19:16:04Z

5

You may use perl.

perl -i -pe 's/\b(\d+)(?=\D*$)/$1+1/e' file

or

perl -i -pe 's/\bVersion="[^"]*\K\b(\d+)(?=[^"]*")/$1+1/e' file

Example:

$ echo '<Product Id="*" Name="Name" Language="1033" Version="1.2.3.4">' | perl -pe 's/\b(\d+)(?=\D*$)/$1+1/e'
<Product Id="*" Name="Name" Language="1033" Version="1.2.3.5">

edited Sep 12, 2015 at 19:16

answered Sep 12, 2015 at 17:33

Avinash Raj

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4 Comments

Wahaj Ali Over a year ago

Thanks. This seems to increment another number later in the file, and skips the version field altogether.

Avinash Raj Over a year ago

You the one said the last number. You didn't talk about the version. Check my update.

Wahaj Ali Over a year ago

Sorry, I meant the last number for the version field, i.e. 1.2.3.4. I tried the second command but that removes the Version="1.2.3.4" and replaces it with 5"

Avinash Raj Over a year ago

forget to add \K, check now.

Atanas Stoyanov · Accepted Answer · 2015-09-12 21:00:31Z

1

Assuming your file is called version.xml, you can try the following:

CURRENT=$(awk -F'"' '{print $8}' version.xml)
NEXT=$(echo ${CURRENT}|awk -F. '{print $1"."$2"."$3"."$4+1}')
sed "s/Version.*/Version=\"${NEXT}\">/g" version.xml

answered Sep 12, 2015 at 21:00

Atanas Stoyanov

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Comments

anubhava · Accepted Answer · 2015-09-13 06:17:02Z

1

Here is an awk command that should work on non-gnu awk (BSD) versions as well:

s='<Product Id="*" Name="Name" Language="1033" Version="1.2.3.9">'

awk -F '[="]+' '{
   for(i=1; i<=NF; i++)
      if ($(i-1) == " Version") {
           n = split($i, vers, ".");
           sub(/\.[0-9]+"/, "." vers[n]+1 "\"")
      }
} 1' <<< "$s"

Output:

<Product Id="*" Name="Name" Language="1033" Version="1.2.3.10">

answered Sep 13, 2015 at 6:17

anubhava

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Comments

Jose Ricardo Bustos M. · Accepted Answer · 2015-09-12 18:45:06Z

0

I can try with awk match and gsub functions

echo '<Product Id="*" Name="Name" Language="1033" Version="1.2.3.4">' |
awk '{
  match($0, /\.([0-9]+)([^0-9]*)$/, a); 
  gsub(/\.([0-9]+)[^0-9]*$/,"." a[1]+1 a[2]); 
  print;
}'

you get

<Product Id="*" Name="Name" Language="1033" Version="1.2.3.5">

if input is, for example:

<Product Id="*" Name="Name" Language="1033" Version="1.2.3.99">

output is:

<Product Id="*" Name="Name" Language="1033" Version="1.2.3.100">

edited Sep 12, 2015 at 18:45

answered Sep 12, 2015 at 18:26

Jose Ricardo Bustos M.

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