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# default nice value seems fine in my case; ionice has no default, using class 3 for idle IO time
ionice -c 3 nice tar ~/the-webapp-20150106.tgz /opt/the-webapp

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kill -0 $(ps -eo pid,command | grep nginx | grep master | awk  -F ' ' '{print $1}')

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Install MS Office 2010 Pro 32 bit on LinuxMint 17 (Ubuntu 14.04)

install prerequisite winbind

sudo apt-get install winbind

create prefix

WINEPREFIX=/home/<username>/.wine-<myprefix> WINEARCH=win32 wine 'wineboot'

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exec su -l $USER

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# trick is to match on a non-printing character (^ is beginning of line) OR your pattern.
# this way all lines match but only your pattern containing printable characters will be highlighted
# using ^ requires Extended-Regexp option (-E)
grep -E '^|pattern' file.log

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echo "syntax for base conversion in bash is: \$((\$BASE#\$VALUE))"
echo

echo "Decimal value of Hexadecimal 2B: \$((16#2B))"
echo $((16#2B))
echo

echo "Decimal value of binary 0110: \$((2#0110))"
echo $((2#0110))
echo

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echo "\$# is the number of arguments"
echo "$# arguments"
echo

echo "\$* is list of arguments joined into a string"
echo $*
echo

echo "\$@ is a sequence of strings, well suited to a for loop"
echo $@

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#!/usr/bin/env php
<?php

/* convert Multi Site Manager (MSM) ExpressionEngine (EE) database to single site database.
 * used to split a site to own EE instance without MSM.
 * Deletes all sites other than site_id specified then changes specified sites id to 1.
 * Ignores site_id 0, although I don't rememeber why.
 * I ran it from Linux command line, no idea if it will run the same on Window or Mac.
 */

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#!/usr/bin/env bash

# transfer mysql database to different server with a new name
# such as production database to test database

read -p "source host:" SRC_HOST
read -p "user for host $SRC_HOST:" SRC_USER
read -p "password for $SRC_USER@$SRC_HOST:" -s SRC_PW; echo
read -p "source database name:" SRC_DB
read -p "target host:" TGT_HOST

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# set hostname to lower in /etc/hosts file
sed -i "s/$(hostname)/$(hostname | tr '[:upper:]' '[:lower:]')/" /etc/hosts
# set runtime hostname to lowercase
hostname $(hostname | tr '[:upper:]' '[:lower:]')
# save lowercase hostname to /etc/hostname file
hostname > /etc/hostname