Commands tagged cleaning (5)

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generate random mac-address using md5sum + sed

generate random identicon

Indent a one-liner.
I often write a one-liner which I want to use later in a script.

txt2html
Convert Text to HTML

ROT13 using the tr command

list all file extensions in a directory
If your grep doesn't have an -o option, you can use sed instead.

Find top 10 largest files in /var directory (subdirectories and hidden files included )
Should work even when very large files exist.

securely erase unused blocks in a partition
This command securely erases all the unused blocks on a partition. The unused blocks are the "free space" on the partition. Some of these blocks will contain data from previously deleted files. You might want to use this if you are given access to an old computer and you do not know its provenance. The command could be used while booted from a LiveCD to clear freespace space on old HD. On modern Linux LiveCDs, the "ntfs-3g" system provides ReadWrite access to NTFS partitions thus enabling this method to also be used on Wind'ohs drives. NB depending on the size of the partition, this command could take a while to complete.

Dump a configuration file without comments or whitespace...
A short, *easy-er* to remember command for stripping whitespace and comments from a config file, (or any file for that matter). Remember regex as: slash, space, star. pound, slash, bar. pointy-hat, dollar. (or "caret, dollar" if you must) :-P

Convert files from DOS line endings to UNIX line endings
This method will also convert mac line endings.


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