Mysql and Sqlite Commands

8/10/2019 Mysql and Sqlite Commands

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clear

exit

wc

Options can be

-c Display numer of characters.

-m Display numer of . -l Display numer of lines.

-w Display numer of words.

pwd

e.g. : DSTBoulder:dst02lp3:/content/iDI/stage/20/AssetReports$ pwd

who

who -T

who -H

who am i

whoami

file

e.g. : #file /etc/hosts

touch

rm

rm rf /Testing ----> Removes directory.

rm Bachi.txt -----> Removes the file.rm *.txt -----> Removes all the files extension with .txt.

vim or vi

cat

#cat Bachi.txt

chown

# ls l

# chown bachi Bachi.txt

# ls -l

ln

#ln Bachi.txt Bachi_ln_test.txt


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hostname :

hostname - show or set the systems host name

domainname - show or set the systems NIS/YP domain name

dnsdomainname - show the systems DNS domain name

nisdomainname - show or set systems NIS/YP domain name

ypdomainname - show or set the systems NIS/YP domain name

uname#dmesg | grep mem

#lsattr E l sys0 a realmem

#dmesg | grep cpu

#lsdev C | grep Proc

df

#df h

#df a

du:

Syntax: du [OPTION]... [FILE]...

du [OPTION]... --files0-from=F

#du h

last

Syntax:

last [-R] [-num] [ -n num ] [-adiowx] [ -f file ] [ -t YYYYMMDDHHMMSS ] [name...] [tty...]

lastb [-R] [-num] [ -n num ] [ -f file ] [-adiowx] [name...] [tty...]

#last

How to change the Shell type?

date

e.g.: date +%D

D - wholedate ,a-day name,y-year,h-monthname,m-month number,d-day of month,T-diaplays th

File Extraction Commands

Zip

Syntax : zip -9 -r desiredname.zip zipneedfile -------- it will keep the source file

or

zip -rm desiredname.zip zipneedfile -----------it will not keep the source file

unzip

Syntax : Unzip foldername.zip

User Administration Commands

useradd

e.g. useradd bhaskar

passwd

e.g. passwd bhaskar

groupadd

usermod


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chmod

chmod +X filename.sh

chmod 777 filename.txt

chmod 400 filename.txt

#chmod R 777 Testing ---> For directories

Mysql commands

mysql -u Enliven -p -h 192.168.1.5

Show databses

use databases name

Show tables

Select count(1) from tablename;

Sqlite commands

sqlite3 Enliven.db

.tables

Select count(1) from tablename;

delete from tablename

update Tablename set fieldname='value to update' where colunm name/value=XX;

EX:update AG_Schedule set NextStart='1983-02-01' where AggId=46;

.output filename.csv + select * from table name

Shell script commands

vi filename

Insert---I , after changing press "esc" next press shf+; and press .q/.wq (w fpr save)

chmod +x filename.sh

./filename.sh

cat filename


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crontab -e

* * * * * command to be executed

- - - - -

| | | | |

| | | | ----- Day of week (0 - 7) (Sunday=0 or 7)

| | | ------- Month (1 - 12)| | --------- Day of month (1 - 31)

| ----------- Hour (0 - 23)

------------- Minute (0 - 59)

Run backup cron job scriptf you wished to have a script named /root/backup.sh run every day at 3am,

your crontab entry would look like as follows. First, install your cronjob by running the

following command:

# crontab -e

Append the following entry:

0 3 * * * /root/backup.sh

ave and close the file.

More examples

To run /path/to/command five minutes after midnight, every day, enter:

5 0 * * * /path/to/command

Run /path/to/script.sh at 2:15pm on the first of every month, enter:

15 14 1 * * /path/to/script.sh

Run /scripts/phpscript.php at 10 pm on weekdays, enter:0 22 * * 1-5 /scripts/phpscript.php

Run /root/scripts/perl/perlscript.pl at 23 minutes after midnight, 2am, 4am ..., everyday,

enter:

23 0-23/2 * * * /root/scripts/perl/perlscript.pl

Run /path/to/unixcommand at 5 after 4 every Sunday, enter:

5 4 * * sun /path/to/unixcommand

How do I use operators?

An operator allows you to specifying multiple values in a field. There are three operators:

1. The asterisk ( ) : This operator specifies all possible values for a field. For example,

an asterisk in the hour time field would be equivalent to every hour or an asterisk in the

month field would be equivalent to every month.

2. The comma (): This operator specifies a list of values, for example: "1,5,10,15,20,

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3. The dash (-): This operator specifies a range of values, for example: "5-15" days ,

which is equivalent to typing "5,6,7,8,9,....,13,14,15" using the comma operator.

4. The separator (/): This operator specifies a step value, for example: "0-23/" can be

used in the hours field to specify command execution every other hour. Steps are also

permitted after an asterisk, so if you want to say every two hours, just use */2.

How do I disable email output?By default the output of a command or a script (if any produced), will be email to your

local email account. To stop receiving email output from crontab you need to append

>/dev/null 2>&1. For example:

0 3 * * * /root/backup.sh >/dev/null 2>&1

To mail output to particular email account let us say [email protected] you need to define

MAILTO variable as follows:

MAILTO="[email protected]"

0 3 * * * /root/backup.sh >/dev/null 2>&1

See "Disable The Mail Alert By Crontab Command" for more information.

Task: List all your cron jobsType the following command:

# crontab -l

# crontab -u username -l

To remove or erase all crontab jobs use the following command:

# Delete the current cron jobs #

crontab -r

## Delete job for specific user. Must be run as root user ##crontab -r -u username
http://www.cyberciti.biz/faq/disable-the-mail-alert-by-crontab-command/http://www.cyberciti.biz/faq/disable-the-mail-alert-by-crontab-command/


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changing directory

list of long files

list of files

list in long formatall files including those which begin with dot

list the inode number in the first column

recursively list all directories and subdirectories

Sort files by access time.

with time

Shows the names of directories and not their contents

Indicates human readable. This mentions file sizes in kilobytes, megabytes, or

gigabytes, instead of just bytes, which is the default setting. Use this option with the

l option only.

Sorts files by file size. This option is useful only when used together with the option l

with count

for giving premissions

To Change working directory.

Syntax : cd >

cd

Copy files and directories

for secure copy

Rename SOURCE to DEST, or move SOURCE to DIRECTORY/fileSyntax : mv >

Displays manual entries online.(To get help of the commands.)

Syantax : man

To search any word in man page use / and string name.

n for checking next search and N for previous search.

To quit press :q.


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Clears the terminal screen

Terminate the process, returning returnCode to the system as the exit status. If

returnCode isn't specified then it defaults to 0.

Counts the number of lines, words, bytes, or characters in a file.

Syntax : wc [ -c | -m ] [ -l ] [ -w ] [ File ... ]

To see the current working directory

It shows who is logged in the same machine

Determine file type.

Creates a new file with zero size or update the timestamp of an existing file.

Removes (unlinks) files or directories

Syntax : rm

Options can be

-i interactively asks for confirming the deletion of files. It is useful in

avoiding accidental erasure of the file

-r option provides a convenient way to erase a directory even if it is not

empty

-f option will forcefully remove a file to which we dont have a writepermission.

Vi IMproved, a programmers text editor

#vi Bachi.txt

Then you can enter Insert key or i. Now you are able to type text into that file(Bachi.txt).

Once it finish press Esc button and type : and type wq .

Now check with ls l command

Concatenate files and print on the standard output

Change file owner and group

Make links between files


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Print system informationTo find Physiacl RAM(Linux)

To find Physiacl RAM(AIX)

To find the Number of CPUs(Linux)

To find the Number of CPUs(AIX)

Report file system disk space usage.

Syntax: df *OPTION+... *FILE+

Estimate file space usage.

Show listing of last logged in users.

Displays or sets the date or time.

Syntax : date +[option]

e time,H-hour,M-minuts

zip, zipcloak, zipnote, zipsplit - package and compress (archive) files

e.g.: zip -9 -r BhaskarReddy.zip BhaskarReddy

zip -rm Bhaskar.zip BhaskarReddy

Unzip - list, test and extract compressed files in a ZIP archive.

e.g. : unzip BhaskarReddy.zip

Creates a new user account

Changes a user's password

Note: # Indicates root user

& Indicates normal user

create a new group

Changes user attributes


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Displays group membership.

Removes a user account.

Switches the user between users and root. (Changes the user ID associated with a session.)

Displays the system identifications of a specified user.

Displays a compact list of the users currently logged on the system.

Note: See first it displays only one user name called root, afther that I logged with bhaskar user in

other terminal, then it shows two users.Opens a line of communication to send messages to other users on the system in real time.

Syantax: # write

Writes a message to all users that are logged in.

Syntax

wall [ -a ] [ -g Group ][ Message ]

for secure copy

move

view

check processers

kill the processescheck the space

for size of that file

making director

inserting and save that file

for moving to last line after view

remove the file

remove all files

remove for ever

to show the date

for secure copy

for tar that file

count of lines,words,charecters in that file

count of lines in that file

count of charecters in that file

count of words in that file

Display numer of .


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Change permission of the file

777 ----> Change permission of the file, make it to executable by all(Owner, Group and Others).

400 ----> Change the permission of the file only Owner can read

for connecting to database

for viewing the databses

for using that databse

for viewing the tables

for knowing the count

for connecting to database

for viewing the tables

for knowing the count

for delete the contain that table

update

taking data from table as a csv file

view/creat file

inserting and save that file

giving premissions

run the sheel script

for output


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giving cronjob

website:http://www.cyberciti.biz/faq/how-do-i-add-jobs-to-cron-under-linux-or-unix-oses/


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build and release


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1)Permissions

2) Number of links

3)Owner

4)Group Owner

5)Size of the File in Bytes

6)Date and Time of created

7)File name


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1File Management

Name

ls

pwd

cd

filecp

cp

mv

mv

rm

rm

less

mkdir

quota

2Tar Archives

Name

tar

tar

gzip

gunzip

tar

tar

3Getting Help

Name

man

info

apropos

whatis

4User Accounts

Namewho

who am i

finger

groups

whois

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5Documents

Name

wc

ispell

head

tail

6Processes

Name

ps

ps

kill

top


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Purpose

Lists files in the current directory

Prints the current working directory

Changes the current directory

Describes the contents of a fileCopies files

Copies directories

Moves files

Renames files

Removes (deletes) files

Removes (deletes) directories

Views the contents of files

Makes new directories

Tells you how much disk quota you are using and how much you have left

Purpose

Bundles many files together into one file called a tarfile

Extracts files from a tarfile

Compresses files to save space

Uncompresses files

Stores many files into a tarfile and compresses them

Extracts compressed tarfiles

Purpose

Displays manuals for programs

Displays info-pages for programs, an alternative manual system

Searches for a command by keyword

Gives a summary of a program

PurposeTells you who's logged into the system

Tells you about yourself

Prints out information about user accounts

Lists what groups a user belongs to

Searches for Users by surname

Shows the last N logins


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Purpose

Counts words in a document

Spell checks a document

Displays the first few lines of a file

Displays the last few lines of a file

Purpose

lists all the processes running for that login

lists all processes running for all logins of a user

stops a process from running

Lists the largest processes running


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Example

ls

pwd

cd foo/

file foocp a b

cp -r foo bar

mv a ./foo/

mv a b

rm foo

rm -r foo/

less foo

mkdir foo

quota -v

Example

tar -cf files.tar foo bar baz

tar -xf files.tar

gzip foo

gzunzip foo.gz

tar -czf files.tar.gz foo bar baz

tar -xzf files.tar.gz

Example

man ls

info ls

apropos keyword

whatis ls

Examplewho

who am i

finger -l username

groups username

whois smith

last


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Example

wc foo

ispell foo

head foo

tail foo

Example

ps

ps -U username

kill 17829

top -n 10


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Explanation

changes to the directory foo

prints a message about what type of file foo iscreates a copy of file à' called `b'

Copies the directory foo to the directory bar, copies all files and directories inside it too.

moves file à' into the directory foo

moves the file à' to be called `b'

deletes the file called foo

deletes the directory called foo

opens the file foo in less. Use space for next page, bfor back a page, qto quit.

creates a new directory inside the current one called foo

Explanation

Creates a tarfile called files.tar that contains the files foo, bar and baz.

Extracts all the files from files.tar into the current directory.

Zip's the contents of the file foo, removing the original file and replacing it with a file called foo.gz.

Unzips the file foo.gz, renaming the uncompressed version foo and removing the original zipped file.

Creates a tarfile called files.tar.gz and stores the files foo, bar and baz in it. It also passes the tarfile throu

Uncompresses files.tar.gz to files.tar then extracts all the files from it into the current directory.

Explanation

shows the manual for the ls command

shows the info page

Displays a list of documentation relating to keyword for example networking or files.

Gives a description of what the ls program is for.

Explanation

prints out information about the user called username.

Prints out the group names that the user username belongs to.

prints out the usernames and real-names of all users who's surname is smith


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Explanation

outputs three numbers relating to file foo, number of lines, number of words and number of

characters.

spell checks the document called foo, creates a backup file called foo.bak first.

Prints out the first 10 lines of the file called foo.

Prints out the last 10 lines of the file foo.

Explanation

displays all the processes of user username, this can be your own username.

Kills the process with the PID 17829. Process Identification Numbers are found with ps.

Prints out the top 10 processes and a lot of information about the system.


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Commands

For copying/print same pattern records in file

Command

awk '/PATTERN/ {for(i=1; i "same.csv"}' member_information_2014-03-10.csv

awk -F"\t" '{ print$36,$37 }' member_information_2014-03-10.csv > date.csv

45 22 * * * /data/Installations/Enliven/Cronjobs/CollectionFiles.sh