Commands by danam

Commands by danam (9)

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What is my ip?
This is sample output - yours may be different.
3

wget -q -O - ifconfig.co

danam · 2015-09-18 13:04:32 2
Determine space taken by files of certain type

Just how much space are those zillions of database logs taking up ? How much will you gain on a compression rate of say 80% ? This little line gives you a good start for your calculations. Show Sample Output
This is sample output - yours may be different.
```
9.1168e+09 # (9G, paste in calc for easy reading)
```
2

find . -name <pattern> -ls | awk 'BEGIN {i=0}; {i=i+$7}; END {print i}'

danam · 2010-02-05 14:47:27 1
How to backup hard disk timely?

Creates files in $DATE and hardlinks existing files to $PREVDATE. Thus full backup in each directory. Only drawback is changed modification time. Recommend a wrapper script to determine $DATE and $PREVDATE. Works like a charm. (Dirvish handrolled)
This is sample output - yours may be different.
5

rsync -a --link-dest=/media/backup/$HOSTNAME/$PREVDATE '--exclude=/[ps][ry][os]' --exclude=/media/backup/$HOSTNAME / /media/backup/$HOSTNAME/$DATE/

danam · 2010-01-30 08:36:41 0
Commit command to history file immedeately after execution

This could be added to .bashrc. Background: Linux usually saves history only on clean exit of shell. If shell ends unclean, history is lost. Also numerous terminals might confuse their history. With this variable set, history is immedeately written, accessible to all other open shells.
This is sample output - yours may be different.
2

PROMPT_COMMAND="history -a"

danam · 2009-10-21 12:33:25 0

List dot-files and dirs, but not "." and ".."

Although rm is protected against it, there are many commands that would wreak havoc on entering the obvious ".*" to address "dot-files". This sweet little expression excludes the dirs "." and ".." that cause the problems. Show Sample Output

-3

ls .[!.]*

danam · 2009-09-29 13:50:13 2

Securely destroy data on given device

Intentional hash in the beginning. May run a looong time. Wipes your data for real. Was meant to be /dev/urandom - I mistyped it. :-)
This is sample output - yours may be different.
1

# for i in $(seq 1 25); do dd if=/dev/urandom of=<your disk> bs=1M ; done

danam · 2009-09-29 07:12:34 2
Search for a <pattern> string inside all files in the current directory

Searches all files,dirs (also hidden) recursively
This is sample output - yours may be different.
3

grep -r <pattern> * .[!.]*

danam · 2009-09-22 14:57:40 2
Happy Days

AFAIR this is the wording ;)
This is sample output - yours may be different.
5

echo {'1,2,3',4}" o'clock" ROCK

danam · 2009-09-15 10:12:49 1
search for a file in PATH

Also searches for aliases and shell builtins Show Sample Output
This is sample output - yours may be different.
```
root@fs3:~# type nvgui
nvgui is /usr/bin/nvgui
root@serv:~# type rm
rm is /bin/rm
root@fs3:~# type alias
alias is a shell builtin
root@serv:~# 
```
4

type <filename>

danam · 2009-09-14 09:37:23 1

What's this?

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Update a tarball

This will update the tarball, adding files that have changed since the last update. This assumes that the tarball is in the same directory as the files being archived. N.B. This command can't be used on compressed tarballs. N.B. This will add the updated files to the tarball, so that the tarball will have two versions of each file. This will make the tarball larger, but doesn't have any other significant effect.

Copy a file over SSH without SCP

Google Translate

Usage: $ translate Example: $ translate hello en es See this for a list of language codes: http://en.wikipedia.org/wiki/List_of_ISO_639-1_codes

Convert CSV to JSON

Replace 'csv_file.csv' with your filename.

vi case insensitive search

Get a random quote from Breaking Bad

Hit an API with curl returning a random quote, then parse the result with jq.

Install pip with Proxy

Installs pip packages defining a proxy

list block devices

Shows all block devices in a tree with descruptions of what they are.

Plays Music from SomaFM

This command asks for the station name and then connects to somafm, Great for those who have linux home entertainment boxes and ssh enabled on them, just for the CLI fiends out there ( I know I'm one of them ;) Also, don't forget to add this as alias(ie alias somafm="read -p 'Which Station? "; mplayer --reallyquite -vo none -ao sdl http://somafm.com/startstream=${REPLY}.pls")

Print a row of 50 hyphens

This feels more intuitive to me.

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