Commands by zude

Commands by zude (5)

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Show current weather for any US city or zipcode

Scrape the National Weather Service Show Sample Output
This is sample output - yours may be different.
```
$ weather chicago, il
Chicago, IL -- Mostly Cloudy: 47 ?F
$ weather los angeles
Los Angeles, CA -- Fair: 83 ?F
$ weather 02456
New Town, MA -- Fair: 44 ?F
```
4

weather() { lynx -dump "http://mobile.weather.gov/port_zh.php?inputstring=$*" | sed 's/^ *//;/ror has occ/q;2h;/__/!{x;s/\n.*//;x;H;d};x;s/\n/ -- /;q';}

zude · 2009-10-17 23:47:47 0
Get decimal ascii code from character

printf treats first char after single ' as numeric equivalent
This is sample output - yours may be different.
1

ord() { printf "%d\n" "'$1"; }

zude · 2009-10-17 22:02:52 0
Function to output an ASCII character given its decimal equivalent
This is sample output - yours may be different.
2

chr() { printf \\$(printf %o $1); }

zude · 2009-10-16 19:10:44 0
Convert unix timestamp to date

The "-d" option for gnu's "date" command can calculate positive or negative offset from any time, including "now". You can even specify a source timezone (the output timezone can be set with the TZ environment variable). Useful! Fun! Not very well documented! Show Sample Output
This is sample output - yours may be different.
```
$ date -ud "1970-01-01 + 1234567890 seconds"
Fri Feb 13 23:31:30 UTC 2009

# and back again
$ date -ud "Fri Feb 13 23:31:30 2009" +%s
1234567890
```
6

date -ud "1970-01-01 + 1234567890 seconds"

zude · 2009-10-07 04:35:40 3
Print text string vertically, one character per line.
This is sample output - yours may be different.
3

echo "vertical text" | fold -1

zude · 2009-10-05 23:20:14 0

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network usage per process

Nethogs groups bandwidth by process.

Mac OS X - List all of my machine's IP addresses

On the Mac, the format ifconfig puts out is little different from Linux: the IP address is space separated, instead of colon. That makes parsing the IP address easier. See releated command for Linux/Unix: http://www.commandlinefu.com/commands/view/651/getting-the-ip-address-of-eth0

Perform sed substitution on all but the last line of input

In this simple example the command will add a comma to the end of every line except the last. I found this really useful when programatically constructing sql scripts. See sample output for example.

Get current Xorg resolution via xrandr

Not sure if it works the same on any shell.

NICs, IPs, and Mac

Needed to get the Mac of various devices on a solaris box, but didn't have root. This command used awk to display the Network device, the IP, and the MAC a line at a time.

backup all your commandlinefu.com favourites to a plaintext file

Usage: clfavs username password num_favourite_commands file_in_which_to_backup

Terminal Keyboard Shortcut list

This command will give you a list of available keyboard shortcuts according to stty.

Edit 2 or more files in vim using vim -d

Is this not the same

Download and extract a *tar.gz file with curl.

copy partition table from /dev/sda to /dev/sdb

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Commands by zude (5)

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