Archive for Linux - page 5

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~
Sniffing network packages – tcpdump

Sniffing network packages – tcpdump

Sniffing packages is extremely useful when debugging any network related traffic. Some of you are using a graphical client such as Wireshark, which is very nice when you’re debugging on your own computer. However this is inconvenient (and outright a pain to use) if you’re…

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Update the timezone

Update the timezone

dpkg-reconfigure tzdata sudo ntpdate ntp.ubuntu.com

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How to install Java 6 on Ubuntu 12.04

How to install Java 6 on Ubuntu 12.04

In Ubuntu: (as root) % mkdir /usr/lib/jvm % cd /usr/lib/jvm % cp /data/download/jdk-6u33-linux-x64.bin . % chmod a+x jdk-6u33-linux-x64.bin % ./jdk-6u33-linux-x64.bin % mv jdk1.6.0_33/ sun-java6-jdk % update-alternatives –install "/usr/bin/java" "java" "/usr/lib/jvm/sun-java6-jdk/bin/java" 1 % update-alternatives –install "/usr/bin/javac" "javac" "/usr/lib/jvm/sun-java6-jdk/bin/javac" 1 % update-alternatives –install "/usr/bin/javaws" "javaws" "/usr/lib/jvm/sun-java6-jdk/bin/javaws" 1…

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Search for a specific string inside a directory matching the files’ name

Search for a specific string inside a directory matching the files’ name

find . -name "articleTypes.xml" | xargs grep -n -i -e 'tidy' or find . -name "apple.txt" -exec grep -H -n -i -e "tidy" \{} \; Search from the root all the files called ‘articleTypes.xml’ which contain the word ‘tiny’ and show in what line it…

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Re-build the keyboard setting

Re-build the keyboard setting

sudo dpkg-reconfigure console-setup

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Size of a directory

Size of a directory

du -h | tail -n 1 du -h

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New IP

New IP

sudo dhclient

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Search for a file in a specific folder matching a string

Search for a file in a specific folder matching a string

for file in *.jar; do echo “working on $file”; jar -tvf $file | egrep -i *.gif; done

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Resolve UTF-8 issue in Linux Console

Resolve UTF-8 issue in Linux Console

Add the following line to your .profile: export LC_CTYPE=en_US.UTF-8

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Untar a file/folder

Untar a file/folder

tar -zxvf filename tar -C /myFolder -zxfv filename.tar.gz

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