Mass merge for svn from cmd

p=`pwd`
for a in `ls -d *-jb2`; do
echo $a
cd $p/$a
svn up
svn merge -c 40657 svn+ssh://svn.evalica.com/usr/local/svn/project/ref-acc/branches/TPL2-REL1_10
svn ci -m "fixed dashboard json problem"
done

How to revert (reverse merge) last svn commit from command line (cmd)

Working example on svn 1.6.x (this script reverts and commit latest revision automatically. It is necessary to be in root project directory):
svn up
svn merge -c -`svn info 2>/dev/null | head -n9 | tail -n1 | awk '{ print $4 }'` `svn info 2>/dev/null | head -n2 | tail -n1 | awk '{ print $2 }'`
svn ci -m "reverted invalid commit"

SVN syntax for doing reverse merge:
svn merge -c -{revision you want to revert} {project svn path}

Mass svn commit from command line

Bash script to mass commit in all subdirectories of current directory.
p=`pwd`
for a in `ls -d *`; do
echo $a
cd $p/$a
svn delete src/java/com/xxx/DeployHelper.java
svn ci -m "deleted deploy helper"
done

If you simply need to commit without any confirmations just type svn ci -m "comment"

How to generate random value in bash

Use $RANDOM variable that always contains random value

Example:
echo $RANDOM

Perl inline replacement

Sometimes you need to replace something in a bunch of files. And this something is quite complex, so you can describe it only with regular expressions, or, by some other reason you need to use perl in your replacement string.

Here is a small sample I'm using:

perl -p -i -e "s/SEARCH_STRING/REPLACEMENT_STRIGN/g"

how to check amount of same items in file

cat /misc/proto_demo/xml/Indeed.xml | grep "" | wc -l

Nginx redirect www.example.com requests to example.com or vice versa

server {
  server_name  www.example.com;
  rewrite ^(.*) http://example.com$1 permanent;
}

server {
  server_name  example.com;
  Put here your domain hosting configuration.
}

Random password generate

for ((n=0;n<10;n++)); if="/dev/urandom" count="1"> /dev/null | uuencode -m -| sed -ne 2p | cut -c-8; done
dd if=/dev/urandom count=1 2> /dev/null | uuencode -m - | sed -ne 2p | cut -c-8
dd if=/dev/urandom count=1 2> /dev/null | md5sum | cut -c-26

mkisofs -iso-level 2 -J -joliet-long -l -D -relaxed-filenames -N -v -o test.iso PROXP.exe

How to dump all traffic goes to host from specific IP address

tcpflow -i rl0 "host checking.host and (src 216.113.191.033 or dst 216.113.191.033)"