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Recover files from Linux filesystem

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Recovering files from the Linux filesystem can be done using many software as well as inbuilt tools in Gnu/Linux R-Linux this is for recovering files from ext2fs filesystem recover project This is the genral methos for recovering files from all filesystems

umount — UnMount File System

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BZip2 Translator Tool is developed by Venkataraman, Ankur and Shikka.
Using this translator, when mapped on a file, you can do bzip
compressed I/O (Like Read, Seek, Length).
URL: http://www.gnu-india.org/pipermail/gnu-india/20010307/000113.html

One Day One Command
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umount — UnMount File System

Summary:

The umount command detaches the file system(s) mentioned from the file
hierarchy. A file system cannot be unmounted when it is `busy’, For
example, when there are open files on it, or when some process has its
working directory there, or when a swap file on it is in use.

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printenv – Print All/Part of Environment

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Revolution OS is a English documentary movie, about Linux based OS,
directed by Mr J.T.S.Moore. The DVD contains sub-titles for No .of
Languages. If you want to contribute for any of the Indian Language
sub-titles, Kindly contact Mr Shakthi “cyborg4k at yahoo dot com”.

One Day One Command
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printenv – Print All/Part of Environment

Summary:

`printenv’ prints environment variables with its Name and Value.

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shred — Overwrite/Delete a file securely.

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Mr Avinash has developed the iTrans package for printing texts in
many Indian languages and encodings.
URL: http://www.aczone.com/itrans/ (Thanks FSUG-Bangalore)

One Day One Command
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shred — Overwrite/Delete a file securely.

Summary:

Overwrite the specified file repeatedly and remove, in order to make
it harder for even very expensive hardware probing to recover the
data.

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sum — Compute and Check .

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Mr Amit Kale has developed kgdb, a source level debugger for Linux
Kernel. It is used along with gdb to debug Linux Kernel.
URL http://kgdb.linsyssoft.com/

One Day One Command
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sum — Compute and Check .

Summary:

`sum’ computes a 16-Bit checksum for each given file(s)/stdin. By
default, it computes checksums using an algorithm compatible with
BSD `sum’ and prints file sizes in units of 1024-byte blocks.

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Encrypting Shell Scripts

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Do you have scripts that contain sensitive information like passwords
and you pretty much depend on file permissions to keep it secure? If
so, then that type of security is good provided you keep your system
secure and some user doesn’t have a “ps -ef” loop running in an attempt
to capture that sensitive info (though some applications mask passwords
in “ps” output). There is a program called “shc” that can be used to
add an extra layer of security to those shell scripts. SHC will encrypt
shell scripts using RC4 and make an executable binary out of the shell
script and run it as a normal shell script. This utility is great for
programs that require a password to either encrypt, decrypt, or require
a password that can be passed to a command line argument.

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locale — Get and show the locale-specific information.

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Linux is included in 11th std Computer Science syllabus in Tamil Nadu.
Linux Users should help the Teachers and Students to understand the
GNU/Linux and FOSS concepts.

One Day One Command
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locale — Get and show the locale-specific information.

Summary:

The locale program writes information about the current locale
environment, or all locales, to screen. Locale is a set of local
environment settings, which is used to describe the Language
Encoding Standard, Date/Time format, Number format, Telephone
Number format, Paper format, etc …

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sha1sum – Compute & Check Secure Hash Algorithm Std 1 message digest.

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Mr Joe Steeve (ILUGC-Member) & Team has developed the IJammer, an
Instant Messenger Jammer. IJammer is a Daemon that runs on one
workstation of a LAN and prevents any IM traffic on that LAN.
URL: http://sarovar.org/projects/ijammer/

One Day One Command
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sha1sum – Compute & Check Secure Hash Algorithm Std 1 message digest.

Summary:

`sha1sum’ computes a 160-bit checksum/fingerprint/message-digest for
each specified file. `sha1sum’ can also determine whether a file &
checksum are consistent. The sums are computed as described in
FIPS-180-1 (www.itl.nist.gov/fipspubs/fip180-1.htm).

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cksum — Computes a CRC (Cyclic Redundancy Check) checksum.

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Mr Ajay, Mr Binand and Mr RajaSubramanian(ILUGC-Member) jointly
developed the TransConnect. It allows one to connect to remote
machines on any port, using HTTP Tunneling.
URL: http://transconnect.sourceforge.net/ (Thanks FSUG-Bglr)

One Day One Command
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cksum — Computes a CRC (Cyclic Redundancy Check) checksum.

Summary:

`cksum’ prints the CRC checksum for each file along with the number of
bytes in the file. The CRC algorithm is specified by the POSIX Std. It
is not compatible with the BSD or System V `sum’ algorithms.

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