simple table

Add this line to your ~/.gitconfig for a git alias "git brd" (i.e., brd = (br)anch+(d)ate) which sorts branches by date. Allows you to pass in limited "git branch" options such as "-r" (remote) or "-a" (all). (Note: forum added "$" prefix to command; obviously in gitconfig there is no "$" prefix.)

Remove old kernels (*-generic and *-generic-pae) via apt-get on debian/ubuntu based systems. Tested on ubuntu 10.04 - 12.04.

Use if you want to include untrusted literal strings in your grep regexes.

I use it to list all mounts below a directory:

/mnt/gentoo

/mnt/gentoo/proc

/mnt/gentoo/sys

/mnt/gentoo/dev

/mnt/gentoo/home

Works even if $dir contains dangerous characters (e.g. comes from a commandline argument).

Depending on your Apache access log configuration you may have to change the sum+=$11 to previous or next awk token.

Beware, usually in access log last token is time of response in microseconds, penultimate token is size of response in bytes. You may use this command line to calculate sum and average of responses sizes.

You can also refine the egrep regexp to match specific HTTP requests.

This pattern matches empty lines in the file and -c gives the count

cut -f1,2 - IP range 16

cut -f1,2,3 - IP range 24

cut -f1,2,3,4 - IP range 24

Simple TCPDUMP grepping for common unsafe protocols (HTTP, POP3, SMTP, FTP)

This command allows you to revert every modified file one-by-one in a while loop, but also after "echo $file;" you can do any sort of processing you might want to add before the revert happens.

-r recursively

-Z zero byte after each file name instead of the usual newline

-l only filenames

shows number of mysql bin log events (which are mysql server events) per minute, useful to check stress times postmortem

Shows sorted by query time, the headers of mysqlbinlog entries. Then is easy to locate the heavier events on the raw log dump

This is a little trickier than finding the last Sunday, because you know the last Sunday is in the first position of the last line. The trick is to use the NF less than or equal to 7 so it picks up all the lines then grep out any empty lines.

this alternative shows the differences as they occur so that they are made plain

When I do a major change in my entities, I want to find a way to find all my Entities names and create the commande for me.

So instead of doing ls src/Your/OwnBundle... and then do it manually, this helps a lot.

Search for java explicit incrementation in order to replace it with postfix or assignment operator

the

small update for this command to work with linux kernels 3.x

Reciprocally, we could get the node name from a give Tor IP address =>

ip2node() { curl -s -d "QueryIP=$1" http://torstatus.blutmagie.de/tor_exit_query.php | grep -oP "Server name:.*'>\K\w+" ; }

ip2node 204.8.156.142

BostonUCompSci

sort is way slow by default. This tells sort to use a buffer equal to half of the available free memory. It also will use multiple process for the sort equal to the number of cpus on your machine (if greater than 1). For me, it is magnitudes faster.

If you put this in your bash_profile or startup file, it will be set correctly when bash is started.

Alternative

works in bash