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Full Discussion: Perl one liner to wrap comment lines
Top Forums Shell Programming and Scripting Perl one liner to wrap comment lines Post 302927890 by reid on Sunday 7th of December 2014 12:21:21 AM
Old 12-07-2014
Perl one liner to wrap comment lines
Greetings fellow scripters.

I find myself editing multiple files, sometimes with the same bits of information. My bash script, a changelog, and a plist file (OS X). Once I realized this, I thought why not script part of this process (and so it begins). In any case, I've solved several of the tasks I've set forth for myself. My new update script will update version/revision numbers in all files, and add text to the top of my change log using a combination of bash, python, and now perl (I think I'm nerding out a bit). I know this is all overkill, I just wanted to see if I could do it.

So, with the command
Code:
./update.sh 1.8.8.8 "some text for a change log header" /some.plist

Code:
pVersion="$1"
pRevision=$(echo "$1" | awk -F. '{print $4}')
vHeader=$(echo $pVersion | sed -e 's/\.//g' -e 's/^/v/')
pChangeLog=$2

export PVERSION=$pVersion
export PREVISION=$pRevision
export PLISTPATH="$3"

python - <<END
import os
import plistlib

pVersion=os.environ['PVERSION']
pRevision=os.environ['PREVISION']
plistPath=os.environ['PLISTPATH']

Plist=plistlib.readPlist(plistPath)

Plist['ProductVersion'] = pVersion
Plist['Revision'] = pRevision


plistlib.writePlist(Plist, plistPath)

END

perl -spi -e "s/version=\"*.*.*.*\"/version=\"$pVersion\"/g" somescript.sh

What I'm stuck with is the next bit.

Code:
perl -spi -e "s/change\ log/change\ log\n#\t$pVersion\n#\t-$pChangeLog/g"

Well, maybe not stuck. It works fine. But, if I could somehow make this perl one-liner also wrap text at 80 columns and add a "#\t\t" at the start of each line (and make me a sandwich).... Is that just asking too much? Maybe I should cut down on the energy drinks.

---------- Post updated at 23:21 ---------- Previous update was at 23:20 ----------

These are the things I do when I'm bored.
 

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ipcheck

IPCHECK(8)						  System Administration Utilities						IPCHECK(8)

NAME

       ipcheck - dyndns.org client

DESCRIPTION

       Usage  : ipcheck.py [options] Username Password Hostnames or	  ipcheck.py [options] --acctfile acct_info_file

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       -r URL NAT router, use web IP detection

       -A text
	      scan syslog for an IP after text (Unix only)

       -F filename
	      guess the WAN IP from a firewall log

       -b     backup mx option ON (default OFF)

       -c     custom dns option (default dynamic)

       -d dir directory for data files (default current)

       -e script
	      execute script after a successful update

       -f     force update regardless of current state

       -g     NAT router, let dyndns guess your IP (do not use this in a cronjob, try -r)

       -h     print this help text

       --help print all available help text

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	      interface for local address (default ppp0)

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       -l     log debugging text to ipcheck.log file

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	      log debugging text to syslog (Unix only)

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	      mx host (default NOCHG)

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Debian GNU/Linux						   January 2012 							IPCHECK(8)
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