Commands by 6bc98f7f

Commands by 6bc98f7f (6)

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ping as traceroute

This command uses ping to get the routers' IP addresses to the destination host as traceroute does. If you know what I mean..
This is sample output - yours may be different.
12

for i in {1..30}; do ping -t $i -c 1 google.com; done | grep "Time to live exceeded"

6bc98f7f · 2012-02-19 13:37:04 4

Indent a one-liner.

Bash builtin type also indents the function. Show Sample Output

type <function name>

6bc98f7f · 2011-04-09 15:33:40 0

-P uses the POSIX output format, which makes information on each file system always printed on exactly one line. "column -t" makes a table from the input. Show Sample Output

df -P | column -t

6bc98f7f · 2011-04-09 13:12:46 5

Start vim without initialization

This will skip all initializations. Especially useful when your ~/.vimrc has something wrong.
This is sample output - yours may be different.
2

vim -u NONE yourfile

6bc98f7f · 2011-03-29 01:31:10 0
count processes with status

Use ps instead of top. But do not use BSD options at all, they are confusing. Use "s=" or "state=" to show consice process statuses. Show Sample Output
This is sample output - yours may be different.
```
$ ps -eo stat= | sort | uniq -c | sort -n
      1 R+
      1 SL
      1 SLl
      1 SN
      1 SNl
      1 S<s
      1 S<sl
      4 S<
      5 S+
      6 Ssl
      9 Ss+
     14 Ss
     40 Sl
    115 S
```
0

ps -eo stat= | sort | uniq -c | sort -n

6bc98f7f · 2011-03-25 13:01:42 0
List your MACs address

The output of ifconfig is localized, using it will fail in non-English environment. "ip" command in iproute2 provides a consistent output and thus is more robust Show Sample Output
This is sample output - yours may be different.
3

ip link | awk '/link/ {print $2}'

6bc98f7f · 2011-03-25 06:26:08 0

What's this?

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Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

list files recursively by size

Work out numerical last month

Work out last months numerical value.

Convert spaces in file names to underscores

Alias for quick command-line volume set (works also remotely via SSH)

If you're addicted to command-line solutions of ordinary actions or if you just want to set your volume from bed via mobile phone SSH, you can set this alias and use it as $ setvol 50 for setting volume on 50% gain Works only with ALSA, tested on Ubuntu 8.10. Give me some info about your experience. TIP: Try aslo command "mute" to toggle mute/unmute sound. But I don't know if this works on all distros.

Convert .flv to .3gp

Download YouTube videos as .flv and convert them to .3gp for your mobile phone.

Exclude .svn, .git and other VCS junk for a pristine tarball

~$ tar --version tar (GNU tar) 1.20

Check your hard drive for bad blocks (destructive)

WARNING!!! ALL DATA WILL BE LOST!!! This command should ONLY be run on drives that are meant to be wiped. Data destruction will result from running this command with the '-w' switch. You may run this command with the '-n' switch in place of '-w' if you want to retain all data on the drive, however, the test won't be as detailed, since the '-n' switch provides a non-destructive read-write mode only, whereas '-w' switch actually writes patterns while scanning for bad blocks.

Convert CSV to JSON

Replace 'csv_file.csv' with your filename.

Bitcoin Brainwallet Base58 Encoder

A bitcoin "brainwallet" is a secret passphrase you carry in your brain. The Bitcoin Brainwallet Private Key Base58 Encoder is the third of three functions needed to calculate a bitcoin PRIVATE key from your "brainwallet" passphrase. This base58 encoder uses the obase parameter of the amazing bc utility to convert from ASCII-hex to base58. Tech note: bc inserts line continuation backslashes, but the "read s" command automatically strips them out. I hope that one day base58 will, like base64, be added to the amazing openssl utility.

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