Commands by thebodzio

Commands by thebodzio (4)

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Lists unambigously names of all xml elements used in files in current directory

This set of commands was very convenient for me when I was preparing some xml files for typesetting a book. I wanted to check what styles I had to prepare but coudn't remember all tags that I used. This one saved me from error-prone browsing of all my files. It should be also useful if one tries to process xml files with xsl, when using own xml application.
This is sample output - yours may be different.
2

grep -h -o '<[^/!?][^ >]*' * | sort -u | cut -c2-

thebodzio · 2009-06-17 00:22:18 10
Merges given files line by line

In the above example all files have 4 lines. In "file1" consecutive lines are: "num, 1, 2, 3", in "file2": "name, Jack, Jim, Frank" and in "file3": "scores, 1300, 1100, 980". This one liner can save considerate ammount of time when you're trying to process serious portions of data. "-d" option allows one to set series of characters to be used as separators between data originating from given files. Show Sample Output
This is sample output - yours may be different.
```
num,name:scores
1,Jack:1300
2,Tim:1100
3,Frank:980
```
8

paste -d ',:' file1 file2 file3

thebodzio · 2009-06-17 00:11:04 12
Create directory named after current date

Not a discovery but a useful one nontheless. In the above example date format is 'yyyymmdd'. For other possible formats see 'man date'. This command can be also very convenient when aliased to some meaningful name: alias mkdd='mkdir $(date +%Y%m%d)'
This is sample output - yours may be different.
11

mkdir $(date +%Y%m%d)

thebodzio · 2009-04-25 14:16:45 13
Re-read partition table on specified device without rebooting system (here /dev/sda).
This is sample output - yours may be different.
9

blockdev --rereadpt /dev/sda

thebodzio · 2009-02-25 22:26:50 7

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Broadcast your shell thru ports 5000, 5001, 5002 ...

run 'nc yourip 5000', 'nc yourip 5001' or 'nc yourip 5002' elsewhere will produce an exact same mirror of your shell. This is handy when you want to show someone else some amazing stuff in your shell without giving them control over it.

.inputrc keybinding to wrap current line in inotifytools for instant compile/test-as-you-save-loop

Assuming you've written all of make -j hfst-tokenize && echo doavtter gr?dakursa|./hfst-tokenize --gtd tokeniser-gramcheck-gt-desc.pmhfst and want that to execute every time you :w in vim (or C-xC-s in Emacs), just hit and it'll turn into $ while true; do ( make -j hfst-tokenize && e doavtter gr?dakursa|./hfst-tokenize --gtd tokeniser-gramcheck-gt-desc.pmhfst ); inotifywait -q -e modify -e close_write *; done with the cursor right before the ')'. Hit enter, and it'll run on each save. Requires the package inotify-tools installed.

Replace duplicate files by hardlinks

Show drive names next to their full serial number (and disk info)

As of this writing, this requires a fairly recent version of util-linux, but is much simpler than the previous alternatives. Basically, lsblk gives a nice, human readable interface to all the blkid stuff. (Of course, I wouldn't recommend this if you're going to be parsing the output.) This command takes all the fun out of the previous nifty pipelines, but I felt I ought to at least mention it as an alternative since it is the most practical.

check open ports without netstat or lsof

send a file or directory via ssh compressing with lzma for low trafic

Create incremental backups of individual folders using find and tar-gzip

Problem: I wanted to backup user data individually, using and incremental method. In this example, all user data is located in "/mnt/storage/profiles", and about 25 folders inside, each with a username ( /mnt/storage/profiles/mike; /mnt/storage/profiles/lucy ...) I need each individual folder backed up, not the whole "/mnt/storage/profiles". So, using find while excluding directories depth and creating two variables (tarfile=username & desdir=destination), tar will create a .tgz file for each folder, resulting in a "mike_2013-12-05.tgz" and "lucy_2013-12-05.tgz".

Find top 10 largest files in /var directory (subdirectories and hidden files included )

Should work even when very large files exist.

Delete only binary files in a directory

Please note that binary file checking is NOT perfect. So, use it with caution. It does not delete hidden files whose name has a leading '.' character. And it regards an empty file as a binary file.

locating packages held back, such as with "aptitude hold "

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