Archive for Linux - page 3

How to take MySql dump (backups)~ Preserve bash history in multiple terminals~ How to take mysql dump~ Run one process (or more) into tmux~ Check DNS nameservers information about host addresses~ How to purge the cache of a page~ Checking the Validity Date of an SSL Certificate~ How to restart network interface~ How can I monitor the memory usage?~ Default max heap size~ How to convert the ^M linebreak to ‘normal’ linebreak in a file opened in vim?~ find difference between two text files with one item per line~ how to extract the first and the last x lines of a big file~ How to remove the ^M return character on Linux~ Find difference between two text files with one item per line~ How to check git changes~ How to list all users in ubuntu/linux~ Bash: Match a word in a string and return the word preceding it~ Delete all files in a folder which don’t match file extensions~ Check space in a disk~ wget – how to mirror only a section of a website~ Move files older than 30 days in current folder to~ How to generate a secure random password~ How to retrieve Perforce password.~ How to get your online secret key directly to your terminal without saving it.~ The request to Suspend this virtual machine failed because the corresponding VMware Tools script did not run successfully.~ BASH Rename all file in a directory~ How can I edit the welcome message when ssh start?~ Find text including subdirectories in ubuntu~ Install the JDK on Ubuntu server~ Copy files with progress bar on terminal~ Decrypt file encrypted with old/primary master key~ How to remove the private master key from your laptop.~ my minimum dot bashrc file~ Add and append text to a file~ Network Connections and network protocol statistics – netstat~ Bash: TAB completion to be case-insensitive~ Get a list of all the cron jobs on a Debian based system~ Why use 64bit?~ Fork bomb~ Sniffing network packages – tcpdump~ Update the timezone~ How to install Java 6 on Ubuntu 12.04~ Search for a specific string inside a directory matching the files’ name~ Re-build the keyboard setting~ Size of a directory~ New IP~ Search for a file in a specific folder matching a string~ Resolve UTF-8 issue in Linux Console~ Untar a file/folder~ Linux basic command: cat, replace, redirect stdout to a file~ SSH Public Key Based Authentication — Howto~
wget – how to mirror only a section of a website

wget – how to mirror only a section of a website

wget –mirror –page-requisites –adjust-extension –no-parent –convert-links –directory-prefix=sousers http://stackoverflow.com/users

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Move files older than 30 days in current folder to

Move files older than 30 days in current folder to

find . -mtime +30 -exec mv {} old/ \;

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How to generate a secure random password

How to generate a secure random password

I believe 50 char are good enough. head -c90 /dev/urandom | base64 | sed s/[^a-zA-Z0-9]//g | head -n 1 | cut -c 1-50

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How to retrieve Perforce password.

How to retrieve Perforce password.

Open the terminal and write echo $P4PASSWD

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How to get your online secret key directly to your terminal without saving it.

How to get your online secret key directly to your terminal without saving it.

wget -qO- http://your-secret-link.asc | gpg -d

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The request to Suspend this virtual machine failed because the corresponding VMware Tools script did not run successfully.

The request to Suspend this virtual machine failed because the corresponding VMware Tools script did not run successfully.

Edit /etc/vmware-tools/scripts/vmware/network @@ -78,13 +78,13 @@ run_network_script() [ "$script" != "error" ] || Panic "Cannot find system networking script." # Using SysV "service" if it exists, otherwise fall back to run the script directly – service=`which service 2>/dev/null` – if [ $? = 0 -a…

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BASH Rename all file in a directory

BASH Rename all file in a directory

for file in *.png;do mv "$file" "${file/_h.png/_half.png}"; done Another use case: foo=” ” # replace first blank only bar=${foo/ /.} # replace all blanks bar=${foo// /.}

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How can I edit the welcome message when ssh start?

How can I edit the welcome message when ssh start?

By default, /etc/motd is a link to /var/run/motd which gets reset every time you login. To make permanent changes you need to remove the link first then change the content of /etc/motd. sudo rm /etc/motd sudo nano /etc/motd

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Find text including subdirectories in ubuntu

Find text including subdirectories in ubuntu

grep -rl "string" /path find . -name "*.jar" | xargs grep Topic locate try.txt | xargs grep hello The methods serve different purposes. recursive search and replace old with new string, inside files $ grep -rl oldstring . |xargs sed -i -e 's/oldstring/newstring/' find ….

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Install the JDK on Ubuntu server

Install the JDK on Ubuntu server

Install the JDK Download he 32bit or 64bit Linux “compressed binary file” – it has a “.tar.gz” file extension i.e. “[java-version]-i586.tar.gz” for 32bit and “[java-version]-x64.tar.gz” for 64bit Uncompress it tar -xvf jdk-7u2-linux-i586.tar.gz (32bit) tar -xvf jdk-7u2-linux-x64.tar.gz (64bit) JDK 7 package is extracted into ./jdk.1.7.0_02 directory….

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