Bash Scripting Help to automate replacing multiple lines
Background:
I am writing a script to help me automate tweaks and things I apply to a custom Android rom I developed. I am on the very last part of my script, and I am stuck trying to find the right command to do what I seek.
When I build roms from source, a file called updater-script is generated and it always has the signature of the source code's creator. Since I am now building it from source, I have to replace this signature with my own. Also there are a few commands I add in to make some apps uninstallable.
What I am looking for:
I want to automate the text replacement. I have created two files, one is called findsts and the other replaceccore.
findsts contains the signature that is ALWAYS in the updater-script. I want to use this file to tell the command I am to use that that is the selection I want replaced.
replaceccore has my signature and will eventually have commands to replace text in the updater-script, but for now I just want the signature replaced with the data in this file.
I first thought sed was the answer, but soon found that sed doesn't like variables, but rather would use literal strings. I was then referred to awk. Awk seems to be a very powerful command, but I have yet to see how it will help me in my current situation. I also know that the signature that i am finding and replacing has tons of special characters, including parenthesis, semi colons, and quotations. This also poses a problem because now not only do I need to figure out the correct command, but then how to tell it to use these files in a literal way and not try to interpret the commands in the file.
The details:
findsts contains:
Code:
ui_print("************************************************");
ui_print("* *");
ui_print("* STS-Dev-Team presents *");
ui_print("* *");
ui_print("* JELLY BEAN for OMAP4 devices *");
ui_print("* *");
ui_print("* Follow us @dhacker29 and @hashcode0f *");
ui_print("* Get the GApps at goo.im/gapps *");
ui_print("* *");
ui_print("************************************************");
ui_print(" ");
replaceccore contains:
Code:
ui_print("*************************");
ui_print("* CyanCore *");
ui_print("* *");
ui_print("* Brought to you by: *");
ui_print("* Team SpeedCore *");
ui_print("* *");
ui_print("* <-Developers-> *");
ui_print("* 2tealth *");
ui_print("* Silverlink34 *");
ui_print("* *");
ui_print("*<Performance Optimizer>*");
ui_print("* The Doctor *");
ui_print("* Taecon *");
ui_print("*************************");
ui_print(" ");
Here is a small part of updater-script, the file I actually am trying to edit, from the beginning of the file:
Code:
mount("ext3", "EMMC", "/dev/block/system", "/system");
package_extract_file("system/bin/backuptool.sh", "/tmp/backuptool.sh");
package_extract_file("system/bin/backuptool.functions", "/tmp/backuptool.functions");
set_perm(0, 0, 0777, "/tmp/backuptool.sh");
set_perm(0, 0, 0644, "/tmp/backuptool.functions");
run_program("/tmp/backuptool.sh", "backup");
unmount("/system");
show_progress(0.500000, 0);
ui_print("************************************************");
ui_print("* *");
ui_print("* STS-Dev-Team presents *");
ui_print("* *");
ui_print("* JELLY BEAN for OMAP4 devices *");
ui_print("* *");
ui_print("* Follow us @dhacker29 and @hashcode0f *");
ui_print("* Get the GApps at goo.im/gapps *");
ui_print("* *");
ui_print("************************************************");
ui_print(" ");
ui_print("Wiping cache...");
mount("ext3", "EMMC", "/dev/block/cache", "/cache");
delete_recursive("/cache");
ui_print("Wiping dalvik-cache...");
mount("ext3", "EMMC", "/dev/block/userdata", "/data");
delete_recursive("/data/dalvik-cache");
ui_print("Mounting your system...");
mount("ext3", "EMMC", "/dev/block/system", "/system");
ui_print("Deleting old system files...");
delete_recursive("/system");
ui_print("Starting Installation...");
If it makes a difference I know the developers who provide the source code and they are okay with other developers building roms from source and customizing it.
Thank you for reading. I hope this is not too complicated a task or annoying. I have been searching for a few days and finally broke down and decided to ask. Please be merciful
Edit:
So if sed actually worked this way, I would set it up like this:
Code:
sts=findsts
ccore=replaceccore
sed -i "s/$sts/$ccore/g' updater-script
but it doesn't, so here I am, back at the drawing board.
Last edited by joeyg; 12-18-2012 at 04:25 PM..
Reason: more detail
Can any one give me the idea on replacing multiple blank lines with a single blank line?
Please conside it for a file having more than 100 number of characters.
Regards,
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12-18-2012
