boris

cat file_with_numbers.txt | awk '{a=+$1}END{print a}'

boris

hadoop fs -count /path/to/shit | awk '{print $6 / $1 *100 }'

boris

puts "hello world".capitalize

boris

#!/bin/bash

if test "$RS_REBOOT" = "true" ; then
  echo "Skip Example script on reboot."
  logger -t BaseServerConfigScript "Skipping  on reboot."
  exit 0
fi

rm -rf /some/path
s3cmd get s3://path/to/your/data

boris

DEFAULT_INPUT_POLICY="DROP"
DEFAULT_OUTPUT_POLICY="DROP"

boris

sudo ufw enable
sudo ufw allow httpd
sudo ufw allow ftp
sudo ufw allow proto tcp from 1172.16.0.0 to port 25
sudo ufw allow proto tcp from 200.83.5.145 to port 22

boris

mysql> show fields from custom_fields;
ERROR 1034 (HY000): Incorrect key file for table 'custom_fields'; 
try to repair it

boris

mysql> check table custom_fields;
+----------------------------+-------+----------+----------------------------------------------------------------+
| Table                      | Op    | Msg_type | Msg_text                                                       |
+----------------------------+-------+----------+----------------------------------------------------------------+
| code_redmine.custom_fields | check | Error    | Incorrect key file for table 'custom_fields'; try to repair it |
| code_redmine.custom_fields | check | error    | Corrupt                                                        |
+----------------------------+-------+----------+----------------------------------------------------------------+
2 rows in set (0.00 sec)

boris

me@my-server:~# myisamchk -r /var/lib/mysql/redmine/custom_fields.MYI 
- recovering (with sort) MyISAM-table '/var/lib/mysql/redmine/custom_fields.MYI'
Data records: 5
- Fixing index 1
- Fixing index 2

boris

mysql> show fields from custom_fields;
+-----------------+--------------+------+-----+---------+----------------+
| Field           | Type         | Null | Key | Default | Extra          |
+-----------------+--------------+------+-----+---------+----------------+
| id              | int(11)      | NO   | PRI | NULL    | auto_increment |
| type            | varchar(30)  | NO   |     |         |                |
| name            | varchar(30)  | NO   |     |         |                |
| field_format    | varchar(30)  | NO   |     |         |                |
| possible_values | text         | YES  |     | NULL    |                |
| regexp          | varchar(255) | YES  |     |         |                |