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4 Commits
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afcda8120a | ||
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4c3c9a11a2 | ||
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a0f7751aa3 |
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@ -1,13 +0,0 @@
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# git common stuff
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## change remote url
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```bash
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git remote set-url origin <new url>
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```
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## remove permission change from git diff
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```bash
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git config core.filemode false
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```
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@ -2,6 +2,6 @@
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## Stashing 1 file
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```bash
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```
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git stash push [-m <message>] [--] [<pathspec>...]
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```
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@ -1,7 +0,0 @@
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# My Jujutsu aliases
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```toml
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[aliases]
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init = ["git", "init", "--colocate"]
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cma = ["commit", "-m"]
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```
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@ -2,12 +2,12 @@
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## touch nginx config
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```bash
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```
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sudo certbot --nginx
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```
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## certificate only
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```bash
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```
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sudo certbot certonly --nginx
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```
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@ -1,41 +0,0 @@
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# Process interaction snippets
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## Find process occupying port
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```bash
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ss -lptn 'sport = :5173'
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```
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### Output example:
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```bash
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State Recv-Q Send-Q Local Address:Port Peer Address:Port Process
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LISTEN 0 511 [::1]:5173 [::]:* users:(("node",pid=29634,fd=32))
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```
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## Kill process
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```bash
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sudo kill -[signal] [PID]
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```
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### Example:
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```bash
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sudo kill -9 29634
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```
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### Signals:
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- **SIGTERM (Signal 15).** This signal asks for a process to terminate. The process can capture this signal, perform cleanup operations, and then exit. By default, the kill command sends SIGTERM if no other signal is specified.
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- **SIGKILL (Signal 9).** It forcefully kills a process. The process cannot capture or ignore this signal, which results in an immediate termination. It should be used as a last resort when a process doesn’t respond to SIGTERM.
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- **SIGINT (Signal 2).** This is typically sent when you press Ctrl + C in the terminal. It interrupts a process and is usually used to stop a process running in the foreground.
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- **SIGHUP (Signal 1).** Sent to a process when its controlling terminal is closed and often used to reload configuration files.
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- **SIGQUIT (Signal 3).** Causes a process to terminate and produce a core dump file for debugging.
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- **SIGSTOP (Signal 19).** Pauses a process without killing it, similar to pressing Ctrl + Z in the terminal.
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- **SIGCONT (Signal 18).** Continues a process that was stopped by SIGSTOP or Ctrl + Z.
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@ -2,7 +2,7 @@
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## By table
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```SQL
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```
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SELECT
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TABLE_NAME,COLUMN_NAME,CONSTRAINT_NAME, REFERENCED_TABLE_NAME,REFERENCED_COLUMN_NAME
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FROM
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@ -14,7 +14,7 @@ WHERE
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## By table column
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```SQL
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```
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SELECT
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TABLE_NAME,COLUMN_NAME,CONSTRAINT_NAME, REFERENCED_TABLE_NAME,REFERENCED_COLUMN_NAME
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FROM
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@ -2,13 +2,13 @@
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## Method 1
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```SQL
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```
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SHOW open tables WHERE In_use > 0;
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```
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## Method 2
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```SQL
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```
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SELECT
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OBJECT_SCHEMA,
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OBJECT_NAME,
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@ -24,6 +24,6 @@ GROUP BY
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## Process list
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```SQL
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```
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SHOW PROCESSLIST;
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```
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@ -2,26 +2,26 @@
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## Show users with hosts
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```SQL
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```
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SELECT User, Host FROM mysql.user;
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```
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## Check user privileges
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```SQL
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```
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SHOW GRANTS FOR 'someuser'@'somehost.somedomain';
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```
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## Create user
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```SQL
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```
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CREATE USER 'some_user'@'somehost.somedomain' IDENTIFIED BY 'some_password';
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FLUSH PRIVILEGES;
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```
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## Delete user
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```SQL
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```
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DROP USER 'some_user'@'somehost.somedomain';
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FLUSH PRIVILEGES;
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```
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@ -30,34 +30,34 @@ FLUSH PRIVILEGES;
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### Grant all privileges
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```SQL
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```
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GRANT ALL PRIVILEGES ON *.* TO 'some_user'@'somehost.somedomain' WITH GRANT OPTION;
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FLUSH PRIVILEGES;
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```
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### Grant privilege on database 'some_db'
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```SQL
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```
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GRANT SELECT ON `some_db`.* TO 'some_user'@'somehost.somedomain';
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FLUSH PRIVILEGES;
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```
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### Grant privilege on table 'some_db'.'some_table'
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```SQL
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```
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GRANT SELECT ON `some_db`.'some_table' TO 'some_user'@'somehost.somedomain';
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FLUSH PRIVILEGES;
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```
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### Grant privilege to select and update some columns on table 'some_db'.'some_table'
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```SQL
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```
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GRANT SELECT (id, some_column), UPDATE (some_column) ON `some_db`.`some_table` TO 'some_user'@'somehost.somedomain';
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```
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### Grant with inheritance
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```SQL
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```
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GRANT SELECT, INSERT, UPDATE, DELETE ON `some_db`.* TO 'some_user'@'somehost' WITH GRANT OPTION;
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FLUSH PRIVILEGES;
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```
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@ -68,34 +68,34 @@ FLUSH PRIVILEGES;
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### Revoke privilege to select from database 'somedb'
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```SQL
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```
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REVOKE SELECT ON `somedb`.* FROM 'someuser'@'somehost';
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FLUSH PRIVILEGES;
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```
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### Revoke all privileges from user
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```SQL
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```
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ALL PRIVILEGES ON *.* FROM 'someuser'@'somehost';
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FLUSH PRIVILEGES;
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```
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### Revoke all privileges to database 'somedb' from user
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```SQL
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```
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ALL PRIVILEGES ON `somedb`.* FROM 'someuser'@'somehost';
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FLUSH PRIVILEGES;
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```
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### Revoke all privileges from user
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```SQL
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```
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REVOKE ALL PRIVILEGES, GRANT OPTION FROM 'someuser'@'somehost';
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FLUSH PRIVILEGES;
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```
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## Change password
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```SQL
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```
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ALTER USER 'test_user'@'localhost' IDENTIFIED BY 'new_password';
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```
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20
Readme.md
20
Readme.md
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@ -4,15 +4,11 @@ This is a repository with useful snippets of various kinds of code
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## Structure
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- [Git](./src/branch/master/Git/)
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- - [stash](./src/branch/master/Git/stash.md)
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- - [common](./src/branch/master/Git/common.md)
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- [Jujutsu](./src/branch/master/Jujutsu/)
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- - [aliases](./src/branch/master/Jujutsu/aliases.md)
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- [Linux](./src/branch/master/Linux/)
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- - [certbot_nginx](./src/branch/master/Linux/certbot_nginx.md)
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- - [processes](./src/branch/master/Linux/processes.md)
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- [MySQL](./src/branch/master/MySQL)
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- - [all_foreign_keys_to_table_or_column](./src/branch/master/MySQL/all_foreign_keys_to_table_or_column.md)
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- - [identify_lock](./src/branch/master/MySQL/identify_lock.md)
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- - [users](./src/branch/master/MySQL/users.md)
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- [Git](./Git/)
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- - [stash](./Git/stash.md)
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- [Linux](./Linux/)
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- - [certbot_nginx](./Linux/certbot_nginx.md)
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- [MySQL](./MySQL/)
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- - [all_foreign_keys_to_table_or_column](./MySQL/all_foreign_keys_to_table_or_column.md)
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- - [identify_lock](./MySQL/identify_lock.md)
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- - [users](./MySQL/users.md)
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