list files in a directory (with details)
ls -la
directory usage (show memory usage of a dir recursively, in MB)
du -s
copy one directory to another
cp /home/userone/myproject /home/user1/mybackup
copy one directory to another and always overwrite
yes | cp -rf /etc/myproject /etc/mybackup
create multiple directories in one go
mkdir -p /etc/{public,private,log,backup}
find all zip files and print their path on screen
find . -name “*.zip” -print
zip a complete directory into a zip file
zip -r archivefile1 .
import a mysql db from gzip in one go
gunzip < file.gz | mysql -u root -p dbname
export a mysql db to gzip file in one go
mysqldump –opt -uUSER -pPASSWORD DATABASE | gzip > /server/path/database.sql.gz
get latest wordpress version from SVN into current folder (don’t omit the period “.” at the end)
svn export http://core.svn.wordpress.org/tags/3.4.2 .
find running process and kill it (don’t try to shut off ps or bash)
ps
kill -9 [pid]
show free memory in MB
free -m
show file usage per filesystem in GB
df -h
show all running processes (press ctrl + c to get out of it)
top
make folder (and subfolders) public/writeable by all
sudo chmod -R 777 *
edit a file without going crazy
nano /etc/myfilename.cfg
This list will be continued as new common commands are found and used.