All commands

The command tasksel allows the choice of packages from the command line to get predefined configurations for specific services (usually this option is offered during installation).

page where I got inspiration:

http://www.commandlinefu.com/commands/view/5473/get-acurate-memory-usage-of-a-process-in-megabytes

and

http://www.commandlinefu.com/commands/view/10022/display-the-top-10-running-processes-sorted-by-memory-usage

It remove the square bracket and convert UNIX time to human readable time for all line of a stream (or file).

Use it with cat and '|' for know what is used in a conf file.

For example cat /etc/squid/squid.conf | sed -re '/^#/d ; s/#.*$// ; /^\s$/d' :

Show you what you use in your file conf.

It removes all comments and empty lines.

Empty lines are lines with nothing, a tab, or a space.

Delete a range of line

How to extract data from one table:

mysqldump --opt --where="true LIMIT 5000" dbinproduzione tabella > miodbditest_tabella.sql

Delete all comments (#) on text :

It deletes the entire comment line and remove comments form end of others.

`your_cmd -erase_all_files` is the real process, but harmless-looking getty appears in the process table.

Never actually had a need to do this, but interesting nonetheless... Tested in bash, dash.

"pass NAME as the zeroth argument to COMMAND", i.e. customise the name of the process (as commonly seen with `ps`)

You can compare directories on two different remote hosts as well:

To avoid password-prompt on remote host just generate the rsa key locally and copy it to remote host:

then

then

was inspired by http://www.commandlinefu.com/commands/view/8936/boot-from-a-block-device-without-giving-root-privilege-to-virtual-box

volpedimongibello= virtual machine name

fighetto= controller name

tutto.iso= DVD iso image

How to remove the DVD:

VBoxManage storageattach "volpedimongibello" --storagectl "fighetto" --port 1 --device 0 --type dvddrive --medium none

I've been looking for this for a long time. Does anybody know how to do this in dash (POSIX shell)?

An alternative version might be:

If you have ever edited a locally checked out version of a file to tweak it for testing purposes, and came back to it over a weekend, you might have forgotten what you exactly changed. This command helps you see the differences between the the checked in SVN version, and the one you tweaked.

reverse of my previous command 10006

Show running time. eta, progressbar

Create an image of "device" and send it to another machine through the network ("target" and "port" sets the ip and port the stream will be sent to), outputting a progress bar

On the machine that will receive, compress and store the file, use:

Optionally, add the -v4g switch at the end of the line in order to split the file every 4 gigabytes (or set another size: accepted suffixes are k, m and g).

The file will be compressed using 7z format, lzma2 algorithm, with maximum compression level and solid file activated.

The compression stage will be executed on the machine which will store the image. It was planned this way because the processor on that machine was faster, and being on a gigabit network, transfering the uncompressed image wasn't much of a problem.

Deletes lines to of a file. You must put the end line first in the range for the curly brace expansion, otherwise it will not work properly.

For example, to remove line 5 from foo, type: vi +5d +wq foo

Use sed to remove comments from a file.

In this example the comments begin with #.

The command '/^#/d' remove line starting with #.

The command 's/#.*$//' remove comments at end of lines.