Port php mysql scripts to php 7.0 from 5.x version

Recently I got a script or series of scripts that were written for PHP 5.6x and hence used mysql_connect which as you know by now does not work with PHP 7.0. Since there were number of scripts, I thought it would be waste of time to change them manually and wrote a script to fix them. If you have similar situation then probably this few lines could help you.

Since my scripts did not use all the functions so I did not put the sed commands for all of them but you get the idea 🙂

#!/bin/bash - 
#===============================================================================
#
#          FILE: fix_mysql.sh
# 
#         USAGE: ./fix_mysql.sh 
# 
#   DESCRIPTION: 
# 
#       OPTIONS: ---
#  REQUIREMENTS: ---
#          BUGS: ---
#         NOTES: ---
#        AUTHOR: Amit Agarwal (aka), 
#  ORGANIZATION: 
#       CREATED: 03/23/2018 16:35
# Last modified: Fri Mar 23, 2018  04:36PM
#      REVISION:  ---
#===============================================================================

set -o nounset                              # Treat unset variables as an error


### Run as 
#### find . -type f -name \*php -exec ~/fixmysql.sh {} \;

####

# mysql_affected_rows -> mysqli_affected_rows($link)
# mysql_close -> mysqli_close($link)
# mysql_data_seek -> mysqli_data_seek( $result, $offset)
# mysql_errno -> mysqli_errno( $link)
# mysql_error -> mysqli_error( $link)
# mysql_fetch_array -> mysqli_fetch_array( $result, $type)
# mysql_fetch_assoc -> mysqli_fetch_assoc( $result)
# mysql_fetch_lengths -> mysqli_fetch_lengths( $result )
# mysql_fetch_object -> mysqli_fetch_object( $result, $class, $params)
# mysql_fetch_row -> mysqli_fetch_row( $result)
# mysql_field_seek -> mysqli_field_seek( $result, $number)
# mysql_free_result -> mysqli_free_result(result)
# mysql_get_client_info -> mysqli_get_client_info( $link)
# mysql_get_host_info -> mysqli_get_host_info( $link)
# mysql_get_proto_info -> mysqli_get_proto_info( $link)
# mysql_get_server_info -> mysqli_get_server_info( $link)
# mysql_info -> mysqli_info( $link)
# mysql_insert_id -> mysqli_insert_id( $link)
# mysql_num_rows ->  mysqli_num_rows( $result)
# mysql_ping -> mysqli_ping( $link)
# mysql_query -> mysqli_query( $link, $query)
# mysql_real_escape_string -> mysqli_real_escape_string( $link)
# mysql_select_db - > mysqli_select_db( $link, $database)
# mysql_set_charset -> mysqli_set_charset( $link, $charset)
# mysql_stat -> mysqli_stat( $link)
# mysql_thread_id -> mysqli_thread_id( $link)
######


file=$1
sed -i 's/mysql_connect/mysqli_connect/g' $file
sed -i 's/mysql_query(/mysqli_query($con,/g' $file
sed -i 's/mysql_error/mysqli_error/g' $file
sed -i 's/mysql_select_db(/mysqli_select_db($con,/g' $file
sed -i 's/mysql_affected_rows/mysqli_affected_rows($con,/' $file
sed -i 's/mysql_escape_string(/mysqli_escape_string($con/' $file 
sed -i 's/mysql_real_escape_string(/mysqli_real_escape_string($con/' $file 
sed -i 's/mysql_fetch_array/mysqli_fetch_array/g' $file
sed -i 's/mysql_fetch_assoc/mysqli_fetch_assoc/g' $file
sed -i 's/mysql_fetch_row/mysqli_fetch_row/g' $file
sed -i 's/mysql_select_db/mysqli_select_db/g' $file

Monitor progress of coreutils commad like mv, cp etc

Monitor progress of coreutils commad like mv, cp etc

You can use command called “progress”. Other option is “pv” but that is little complicated so here is simpler option.

Progress – A Tiny Tool to Monitor Progress for (cp, mv, dd, tar, etc.) Commands in Linux

To install, you can do the following:

dnf install progress

Send history of current host to some other host over ssh

Sometimes I want to save the history of current host on another host. This is to ensure that I can use copy/paste on other host to run the commands. To this, I found a simple solution –

history| ssh <user>@<host> 'cat - > /tmp/history'

And on the new host, you can find the history in file “/tmp/history”, cool :). Now I can quick edit this file to create this as shell script as well if required. How cool is that.