Linux, PHP, LAMP, The Web in a blog- Android – how to develop directly on a phone
- Android drawable default icons – they are free to use
- Android how to read and write files
- Uncompress on the fly when copying a file from a remove location with scp
- Setting up an encrypted volume on an external hard drive on CentOS
- Linux bash – tar tricks
- Implement Selenium tests
- Using a downloaded package without IDE in Java
- CSS selectors optimisation
- Ubuntu Linux on Acer Aspire AO751h
Category Archives: Linux Command Line
Uncompress on the fly when copying a file from a remove location with scp
Don’t use scp, do it with ssh: ssh backups@server “cat /home/backups/backup_2010-09-27.tar.gz”| tar zxvf – You can probably use something similar also for: Compress on the fly when copying a file from a remove location with scp
Linux bash – tar tricks
Change directory: tar xzvf /var/backups/dbserver/dbserver-backup*.tar.gz -C /var/backups/dbserver Specifing the destination file: tar –create -zvPh -f /tmp/backup.tar.gz /usr/local/bin /usr/local /etc/var/spool/cron /var/svn /home/*/.ssh /home/*/.bash*
Linux command Line – copy a file from remote to local
Copy a file from a remote location to a local directory (for example to burn a backup on DVD): scp backups@server1:backup20100105 local/path
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PHP function to get the most recurrent words in a file – it uses Linux command line
/** * Extracts the most recurrent one-word and two-word terms in a file * Filters out some common stop words and you can also pass extra ones * * @param string $filepath * @param int $minWordLength – the minimal word … Continue reading
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Linux Bash: Append and Prepend Strings to Files
I want to append the string “BYE” to the file test.txt echo “BYE” >> test.txt Now, I want to prepend the string “HI” to the file test.txt echo “HI”|cat – test.txt > /tmp/out && mv /tmp/out test.txt
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PHP – Execute Linux Commands
There are 4 functions: _ exec _ system _ passthru _ shell_exec They basically differ for the return. The best seems to be the last one, if you need the whole command output in your PHP script.
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SSH Without Password
Use Public/Private Keys for Authentication Using encrypted keys for authentication offers two main benefits. Firstly, it is convenient as you no longer need to enter a password (unless you encrypt your keys with password protection) if you use public/private keys. … Continue reading
List Which Ports Are Listening – Open Ports – Open Connections
This is the most reliable method because is actually scans the ports: nmap -sT -O localhost Other methods based on internal checks that give you also the information about the program using the ports: netstat -anp lsof -i
Building Scalable Web Sites – Scalability
A scalable system has got 3 simple characteristics: The system can accommodate increased usage The system can accomodate an increased dataset The system is maintainable It’s not about speed or complexity, those are other topics. For exampel, this is a … Continue reading
Posted in Linux, Linux Command Line, Microsoft, Web Development
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Linux: How To Count The Number Of Files Under a Directory
find . -type f | wc -l
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