Commands by lingo

Commands by lingo (11)

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Remove color codes (special characters) with sed
This is sample output - yours may be different.
-1

cat input.txt | sed 's/\\\033[^a-zA-Z]*.//g'

lingo · 2011-08-02 05:27:36 5
Fetch all GPG keys that are currently missing in your keyring

For instance, if people have signed your key, this will fetch the signers' keys.
This is sample output - yours may be different.
1

gpg --list-sigs | sed -rn '/User ID not found/s/^sig.+([a-FA-F0-9]{8}).*/\1/p' | xargs -i_ gpg --keyserver-options no-auto-key-retrieve --recv-keys _

lingo · 2011-07-22 16:31:25 6
(Git) Revert files with changed mode, not content

I sometimes (due to mismanagement!) end up with files in a git repo which have had their modes changed, but not their content. This one-liner lets me revert the mode changes, while leaving changed-content files be, so I can commit just the actual changes made.
This is sample output - yours may be different.
5

git diff --numstat | awk '{if ($1 == "0" && $2 == "0") print $3}' | xargs git checkout HEAD

lingo · 2009-09-17 22:12:50 11
Show changed files, ignoring permission, date and whitespace changes

Only shows files with actual changes to text (excluding whitespace). Useful if you've messed up permissions or transferred in files from windows or something like that, so that you can get a list of changed files, and clean up the rest.
This is sample output - yours may be different.
1

git diff --numstat -w --no-abbrev | perl -a -ne '$F[0] != 0 && $F[1] !=0 && print $F[2] . "\n";'

lingo · 2009-08-19 05:07:58 9
Show (only) list of files changed by commit

Lists ONLY the files changed by the given HASH/HEAD/list of hashes, etc. The message, commit ID, author, etc. is not included
This is sample output - yours may be different.
2

git show --relative --pretty=format:'' --name-only HASH

lingo · 2009-08-14 03:36:03 3
Add prefix onto filenames

Best to try first with -n flag, to preview
This is sample output - yours may be different.
12

rename 's/^/prefix/' *

lingo · 2009-08-14 03:26:45 18
Go to parent directory of filename edited in last command

Uses the last argument of the last executed command, and gets the directory name from it. Use $!:t for the filename alone, without the dirname. Show Sample Output
This is sample output - yours may be different.
```
user@host:/home$ vim /path/to/file.txt
user@host:/home$ cd !$:h
user@host:/path/to$ 
```
25

cd !$:h

lingo · 2009-08-07 00:37:08 17
Backup all MySQL Databases to individual files
This is sample output - yours may be different.
34

for I in $(mysql -e 'show databases' -s --skip-column-names); do mysqldump $I | gzip > "$I.sql.gz"; done

lingo · 2009-08-07 00:25:23 41
Copy files from list with hierarchy

If you want certain files out of a directory hierarchy, this will copy just the listed files, but will create the directory hierarchy in the new location ($DIR/)
This is sample output - yours may be different.
0

cat files.txt | xargs tar -cv | tar -x -c $DIR/

lingo · 2009-08-06 22:55:21 6
Simple list of apache2 virtualhosts

Simply shows virtualhosts enabled, root access not needed (assuming apache2ctl is non-root executable).
This is sample output - yours may be different.
0

/usr/sbin/apache2ctl -S

lingo · 2009-07-21 10:52:49 4
List apache2 virtualhosts

Lists virtualhosts currently enabled for apache2, showing the ServerName:port, conf file and DocumentRoot
This is sample output - yours may be different.
4

/usr/sbin/apache2ctl -S 2>&1 | perl -ne 'm@.*port\s+([0-9]+)\s+\w+\s+(\S+)\s+\((.+):.*@ && do { print "$2:$1\n\t$3\n"; $root = qx{grep DocumentRoot $3}; $root =~ s/^\s+//; print "\t$root\n" };'

lingo · 2009-07-21 10:51:30 3

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Calculate the distance between two geographic coordinates points (latitude longitude)

The Haversine formula determines the great-circle distance between two points on a sphere given their longitudes and latitudes.

The scene in the Shining (Stanley Kubrick)

Let's take a rest. How about watch a horror? The Shining http://en.wikipedia.org/wiki/The_Shining_(film)

Get AWS temporary credentials ready to export based on a MFA virtual appliance

You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

List the biggest accessible files/dirs in current directory, sorted

Recursive Ownership Change

Changing files ownership in a directory recursivley from a user to another

Finding the number of cpu's

Show most common words in filenames

I'm sure there's a more elegant sed version for the tr + grep section.

sends your internal IP by email

This is useful if you have need to do port forwarding and your router doesn't assign static IPs, you can add it to a script in a cron job that checks if you IP as recently changed or with a trigger script. This was tested on Mac OSX.

Open (in vim) all modified files in a git repository

The option --porcelain makes the output of git easier to parse. This one-liner may not work if there is a space in the modified file name.

Save your terminal commands in bash history in real time

Use this command if you want your terminal commands be saved in your history file in real time instead of waiting until the terminal is closed

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