Skip to main content

Notes on csv handling with bash

 https://stackoverflow.com/questions/2535255/fastest-way-convert-tab-delimited-file-to-csv-in-linux


grep -n ^$ /path/to/file

^$ start end => mean blank line

import sys import csv tabin = csv.reader(sys.stdin, dialect=csv.excel_tab) commaout = csv.writer(sys.stdout, dialect=csv.excel) for row in tabin: commaout.writerow(row) Run it from a shell as follows: python script.py < input.tsv > output.csv



Comments

Popular posts from this blog

AWS Elasticache Memcached connection

https://docs.aws.amazon.com/AmazonElastiCache/latest/mem-ug/accessing-elasticache.html#access-from-outside-aws http://hourlyapps.blogspot.com/2010/06/examples-of-memcached-commands.html Access memcached https://docs.aws.amazon.com/AmazonElastiCache/latest/mem-ug/GettingStarted.AuthorizeAccess.html Zip include hidden file https://stackoverflow.com/questions/12493206/zip-including-hidden-files phpmemcachedadmin ~ phpMyAdmin or phpPgAdmin ... telnet mycachecluster.eaogs8.0001.usw2.cache.amazonaws.com 11211 stats items stats cachedump 27 100 https://docs.aws.amazon.com/AmazonElastiCache/latest/mem-ug/VPCs.EC.html https://lzone.de/cheat-sheet/memcached VPC ID Security Group ID (sg-...) Cluster: The identifier for the cluster memcached1 Creation Time: The time (UTC) when the cluster was created January 9, 2019 at 11:47:16 AM UTC+7 Configuration Endpoint: The configuration endpoint of the cluster memcached1.ahgofe.cfg.usw1.cache.amazonaws.com:11211 St...

Rocket.Chat DB schema

_raix_push_notifications avatars.chunks avatars.files instances meteor_accounts_loginServiceConfiguration meteor_oauth_pendingCredentials meteor_oauth_pendingRequestTokens migrations rocketchat__trash rocketchat_cron_history rocketchat_custom_emoji rocketchat_custom_sounds rocketchat_import rocketchat_integration_history rocketchat_integrations rocketchat_livechat_custom_field rocketchat_livechat_department rocketchat_livechat_department_agents rocketchat_livechat_external_message rocketchat_livechat_inquiry rocketchat_livechat_office_hour rocketchat_livechat_page_visited rocketchat_livechat_trigger rocketchat_message rocketchat_oauth_apps rocketchat_oembed_cache rocketchat_permissions rocketchat_raw_imports rocketchat_reports rocketchat_roles rocketchat_room rocketchat_settings rocketchat_smarsh_history rocketchat_statistics rocketchat_subscription rocketchat_uploads system.indexes users usersSessions https://rocket.chat/docs/developer-guides/sc...

Common Command

Mysql: Create database with default character set, encoding: create database DB_NAME default character set utf8 default collate  utf8_general_ci; import mysql -u root -p DB_NAME < dump.sql mysql -u root -p DB_NAME < dump.sql /Application/MAMP/Library/bin/mysql /Application/MAMP/Library/bin/mysqlimport MAMP (MAC OSX + Apache + Mysql + PHP) PostgreSQL Others Export: mysqldump -u root -p Tutorials > tut_backup.sql Dump a table in DB: $ mysqldump -u root -p Tutorials php_tutorials asp_tutorials > tut_backup.sql Link stackoverflow  how-do-you-mysqldump-specific-tables Dump many DB : mysqldump -u root -p --databases Tutorials Articles Comments > content_backup.sql mysql> GRANT ALL PRIVILEGES ON *.* TO 'monty'@'localhost' ->     IDENTIFIED BY 'some_pass' WITH GRANT OPTION; mysql> GRANT ALL PRIVILEGES ON *.* TO 'monty'@'%' ->     IDENTIFIED BY 'some_pass' WITH GRANT OPTION; mysql> GRANT ...