Commands by wires

Commands by wires (15)

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Show contents of all git objects in a git repo

This script finds all git objects and `git cat-file`'s their content. This is really just a helper function to play around with the internals of git repositories. See https://git-scm.com/book/en/v2/Git-Internals-Git-Objects of more info. Show Sample Output
This is sample output - yours may be different.
```
$ mkdir test1; cd test1; git init
$ echo hello | git hash-object --stdin -w
ce013625030ba8dba906f756967f9e9ca394464a

$ cd ..; git clone test1 test2; cd test2

# now we run the command and notice
# the objects have been cloned
$ find .git/objects/ -type f \| sed 's/\.git\/objects\/\///' | sed 's/\///g' | xargs -n1 -I% echo echo "%" \$$git cat-file -p "%"$ \0 | xargs -n1 -0 sh -c
4b825dc642cb6eb9a060e54bf8d69288fbee4904
ce013625030ba8dba906f756967f9e9ca394464a hello
```
1

find .git/objects/ -type f \| sed 's/\.git\/objects\/\///' | sed 's/\///g' | xargs -n1 -I% echo echo "%" \$$git cat-file -p "%"$ \0 | xargs -n1 -0 sh -c

wires · 2020-11-15 09:24:58 257
Get purescript externs

just some jq code... Show Sample Output
This is sample output - yours may be different.
```
{
  "kind": "ValueRef",
  "value": "notEq1"
}
{
  "kind": "TypeInstanceRef",
  "value": "eqBoolean"
}
```
0

cat externs.json | jq ".efExports | .[] | (keys|.[0]) as \$kind | {kind:\$kind,value:(.[\$kind] |.Ident?)}"

wires · 2017-04-01 13:55:53 29

exa

nothing fancy `ls` alternative `exa`, with most info printed and passed through less with the `-R` (raw) option, to preserve colour output https://github.com/ogham/exa You can add or remove `-@` to print extended attributes for files that have them. Show Sample Output

-1

exa -glhrSuU -s size --group-directories-first -@ | less -R

wires · 2016-02-27 17:19:43 84

Upgrade pip-installed python packages
This is sample output - yours may be different.
1

python -c "import pip; print(' '.join([x.project_name for x in pip.get_installed_distributions()]))" | xargs sudo pip install -U

wires · 2014-11-16 09:59:24 8

Upgrade all expired homebrew packages

You probably want to run `brew update` before you run this command Show Sample Output

brew outdated | cut -f1 | xargs brew upgrade

wires · 2014-11-16 09:51:50 10

Rip a video for archiving, from any site

Download video files from a bunch of sites (here is a list https://rg3.github.io/youtube-dl/supportedsites.html). The options say: base filename on title, ignores errors and continue partial downloads. Also, stores some metadata into a .json file plz. Paste youtube users and playlists for extra fun. Protip: git-annex loves these files Show Sample Output

youtube-dl -tci --write-info-json "https://www.youtube.com/watch?v=dQw4w9WgXcQ"

wires · 2014-10-13 21:18:34 19

Install every (not already installed) component of the Google Cloud SDK

Google Cloud SDK comes with a package manager `gcloud components` but it needs a bit of `sed` to work. Modify the "^| Not" bit to change the package selection. (The gcloud --format option is currently broken) Show Sample Output
This is sample output - yours may be different.
```
gcloud components update pkg-go pkg-java pkg-python app gae-python-launcher-mac gae-go gae-java gae-python
```
0

gcloud components list | grep "^| Not" | sed "s/|$.*$|$.*$|$.*$|/\2/" | xargs echo gcloud components update

wires · 2014-10-13 20:52:25 11
Simple colourized JSON formatting for BASH

Leave out pygmentize or `pip install pygments` first. Show Sample Output
This is sample output - yours may be different.
```
$ curl -s http://api.openweathermap.org/data/2.5/weather?q=Amsterdam,nl | pp

# this output is colourized
{
    "base": "cmc stations",
    "clouds": {
        "all": 20
    },
    "cod": 200,
    "coord": {
        "lat": 52.37,
        "lon": 4.89
    }
    /* ... */
}
```
5

alias pp='python -mjson.tool|pygmentize -l js'

wires · 2014-05-22 10:29:44 11
Colorized JSON pretty printing

Uses pygmentize and python to create indented and colorized JSON output Show Sample Output
This is sample output - yours may be different.
```
curl -s http://www.reddit.com/.json | pp
```
2

alias pp='python -mjson.tool | pygmentize -l javascript'

wires · 2012-10-16 13:55:38 22
throttle bandwidth with cstream

this bzips a folder and transfers it over the network to "host" at 777k bit/s. cstream can do a lot more, have a look http://www.cons.org/cracauer/cstream.html#usage for example: echo w00t, i'm 733+ | cstream -b1 -t2 hehe :)
This is sample output - yours may be different.
24

tar -cj /backup | cstream -t 777k | ssh host 'tar -xj -C /backup'

wires · 2009-07-02 10:05:53 35
find the 10 latest (modified) files

order the files by modification (thanks stanishjohnd) time, one file per output line and filter first 10
This is sample output - yours may be different.
7

ls -1t | head -n10

wires · 2009-06-23 12:15:12 9
import gpg key from the web

imports a public key from the web. I know this by head.. but useful nevertheless Show Sample Output
This is sample output - yours may be different.
```
gpg: key 00ED7604: "Jelle Herold (wires) <jelle@defekt.nl>" not changed
gpg: Total number processed: 1
gpg:              unchanged: 1
```
2

curl -s http://defekt.nl/~jelle/pubkey.asc | gpg --import

wires · 2009-06-18 11:26:03 9
detach remote console for long running operations

Starts midnightcommander and allows you to detach the console; use ctrl-\ to detach Then at a later time you can reconnect using dtach -a /tmp/wires-mc In my experience dtach works much better for programs like irssi, mutt, mc, aptitude than screen does.
This is sample output - yours may be different.
5

dtach -c /tmp/wires-mc mc

wires · 2009-06-17 22:18:25 12
extract email adresses from some file (or any other pattern)

find all email addresses in a file, printing each match. Addresses do not have to be alone on a line etc. For example you can grab them from HTML-formatted emails or CSV files, etc. Use a combination of ...|sort|uniq$ to filter them. Show Sample Output
This is sample output - yours may be different.
```
foo@bar.com
banana@coconutz.eu
```
3

grep -Eio '([[:alnum:]_.]+@[[:alnum:]_]+?\.[[:alpha:].]{2,6})' file.html

wires · 2009-06-16 20:19:47 10
Another way to calculate sum size of all files matching a pattern

Here the pattern is '*.jar', you could pass in any pattern. Another, maybe nicer way to do this is http://www.commandlinefu.com/commands/view/1921/summarise-the-size-of-all-files-matching-a-simple-regex You could replace sed with tr Show Sample Output
This is sample output - yours may be different.
```
44
```
3

find . -iname '*.jar' | xargs du -ks | cut -f1 | xargs echo | sed "s/ /+/g" | bc

wires · 2009-06-08 14:29:56 6

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

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Email yourself after a job is done

This is a two part command that comes in really handy if you're running commands that take longer than you're willing to wait. The commands are separated by the semicolon(;) The first command is whatever you're attempting to do. The second commands emails you after the job completes.

Uptime in minute

Want to run scripts/programs in the system after starting X minute [ For letting the system to free ]? This will give uptime in minute.

Kill any lingering ssh processes

Also ignoring "sshd" server is necessary since you should not kill ssh server processes.

See system users

Paste hardware list (hwls) in html format into pastehtml.com directly from console and return URI.

In this Linux box i need to become root to get the complete hardware list, so either become root before or call it with sudo as i did, your choice.

Annotate tail -f with timestamps

Update zone file Serial numbers

Will edit *.db files in the same directory with todays date. Useful for doing a mass update to domains on a nameserver, adding spf records, etc. Looks for a string starting with 200 or 201 followed by 7 numbers, and replaces with todays date. This won't overwrite Ip's but i would still do some double checking after running this. Make sure your server's date is correct, otherwise insert your own serial number. $rndc reload should usually follow this command.

Search some text from all files inside a directory

back ssh from firewalled hosts

host B (you) redirects a modem port (62220) to his local ssh. host A is a remote machine (the ones that issues the ssh cmd). once connected port 5497 is in listening mode on host B. host B just do a ssh 127.0.0.1 -p 5497 -l user and reaches the remote host'ssh. This can be used also for vnc and so on.

Touch a file using a timestamp embedded in the file name.

tstouch takes two arguments: a filename containing a timestamp, and an extended regular expression with the parenthesized section matching a timestamp of the form YYYYMMDDhhmm or YYYYMMDDhhmm.ss. It then touches the file with that timestamp.

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