Commands tagged sql (6)

  • sqlite3 cmd to extract Firefox bookmarks from places.sqlite

    Found this useful query at http://id.motd.org/pivot/entry.php?id=22. The b.parent=2 in the command refers to the bookmarks folder to extract. See the source webpage for additional info.


    5
    sqlite3 ~/.mozilla/firefox/*default/places.sqlite "select a.url, a.title from moz_places a, moz_bookmarks b where a.id=b.fk and b.parent=2;"
    jrdbz · 2013-04-12 17:41:34 1
  • Create Encrypted WordPress MySQL Backup without any DB details, just the wp-config.php

    The coolest way I've found to backup a wordpress mysql database using encryption, and using local variables created directly from the wp-config.php file so that you don't have to type them- which would allow someone sniffing your terminal or viewing your shell history to see your info. I use a variation of this for my servers that have hundreds of wordpress installs and databases by using a find command for the wp-config.php file and passing that through xargs to my function. Show Sample Output


    4
    eval $(sed -n "s/^d[^D]*DB_\([NUPH]\)[ASO].*',[^']*'\([^']*\)'.*/_\1='\2'/p" wp-config.php) && mysqldump --opt --add-drop-table -u$_U -p$_P -h$_H $_N | gpg -er AskApache >`date +%m%d%y-%H%M.$_N.sqls`
    AskApache · 2009-08-18 07:03:08 0
  • Pretty print SQL query with python in one line

    You need to apt-get install python-sqlparse. This command simply formats a sql query and prints it out. It is very useful when you want to move a sql query from commandline to a shell script. Everything is done locally, so you don't need to worry about copying sql query to external websites. Show Sample Output


    1
    echo "select a, b, c from table where a = 3;"| python -c "import sys;import sqlparse;print sqlparse.format(sys.stdin.read(), reindent=True, keyword_case='upper')"
    hide1713 · 2014-02-21 23:17:15 0
  • Display sqlite results one column per line

    Similar output to using MySQL with the \G at the end of a Query. Displays one column per line. Other modes include: -column Query results will be displayed in a table like form, using whitespace characters to separate the columns and align the output. -html Query results will be output as simple HTML tables. -line Query results will be displayed with one value per line, rows separated by a blank line. Designed to be easily parsed by scripts or other programs -list Query results will be displayed with the separator (|, by default) character between each field value. The default. From inside the command line this can be also changed using the mode command: .mode MODE ?TABLE? Set output mode where MODE is one of: csv Comma-separated values column Left-aligned columns. (See .width) html HTML code insert SQL insert statements for TABLE line One value per line list Values delimited by .separator string tabs Tab-separated values tcl TCL list elements Show Sample Output


    0
    sqlite3 -line database.db
    pykler · 2010-10-09 16:10:19 0
  • Join command like SQL

    Join command combines lines from two files based on a common field. Show Sample Output


    0
    join employee.txt bonus.txt
    ankush108 · 2012-06-26 18:36:11 0
  • Export a postgresql query into csv file

    This command will "su" the execution of the command to the postgres user(implies that you are already logger as root), and export the result of the query to a file on the csv format. You'll need to adequate the fields and database information to one of your choice/need. Show Sample Output


    0
    # su -c "psql -d maillog -c \"copy (select date,sender,destination,subject from maillog where destination like '%domain.com%') to '/tmp/mails.csv' with csv;\" " postgres
    Risthel · 2013-02-13 13:03:17 0

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Backup with versioning
Apart from an exact copy of your recent contents, also keep all earlier versions of files and folders that were modified or deleted. Inspired by EVACopy http://evacopy.sourceforge.net

Set RGB gamma of secondary monitor
This command first determines whether a second screen is connected. If this is the case, it sets the screen's RGB gamma via xrandr. Useful for cheap or slightly defective monitors with a tint. In this example a yellowing/champagne color deviation is compensated for by decreasing the red and the green portion of the image.

Change newline to space in a file just using echo
Changing newline to spaces using just echo

Grabs a random image from "~/wallpapers" and sets as the background
don't bother spawning a bc process or counting the number of options, just pick a random one. 'sort -R' sorts randomly, so pick the top one.

Install a basic FreeBSD system
Install a basic FreeBSD system on a distant server. I use this to install FreeBSD on servers that can only boot a Linux rescue system. This sytem loads on ram when booted, so it is possible to install freely. You can even install on ZFS root !

Calculate days on which Friday the 13th occurs (inspired from the work of the user justsomeguy)
Friday is the 5th day of the week, monday is the 1st. Output may be affected by locale.

Write comments to your history.
A null operation with the name 'comment', allowing comments to be written to HISTFILE. Prepending '#' to a command will *not* write the command to the history file, although it will be available for the current session, thus '#' is not useful for keeping track of comments past the current session.

Find the annual salary of any White House staffer.
Query the Socrata Open Data API being used by the White House to find any employee's salary using curl, grep and awk. Change the value of the search parameter (example uses Axelrod) to the name of any White House staffer to see their annual salary.

Scan a gz file for non-printable characters and display each line number and line that contains them.
Scans the file once to build a list of line numbers that contain non-printable characters Scans the file again, passing those line numbers to sed as two commands to print the line number and the line itself. Also passes the output through a tr to replace the characters with a ?

Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

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