Useful Linux Commands

This is a compilation of rather rare, useful Linux Commands.

mount remote folder using sshfs

sshfs example.com:/stuff /media/music
(unmount “fusermount -u /media/music”)

scan for wireless networks

iwlist eth1 scanning (replace eth1 with your interface)

backup mysql database and compress backup file

mysqldump -ppassword -uuser -phost database_name | gzip > backup_name.sql.gz

check disk space

df -h

display connection count by ip address

netstat -ntu | awk ‘{print $5}’ | cut -d: -f1 | sort | uniq -c | sort -nr

mount network share

sudo mount -t smbfs //san/ics /mnt/ics -o username=user,password=pass

find files modified recently

find . -mtime -1
(find all files in the current directory and subdirectories, modified within the last 24 hours)
find ~ -mmin -90
(find all files in the home directory, modified within the past 90 minutes)
find ~ -type f -mmin -90 | xargs ls -l
(same as above, but with extended output information)

find text within files and display file names only

find . | xargs grep ’string’ -sl
(-s is for summary and won’t display warning messages, -l is for list, so we get just the filename)

retrieve OS version and Kernel info

uname -a print all information
uname -r print kernel release
uname -v print kernel version and info

delete all .svn files and folders

find . -name .svn -print0 | xargs -0 rm -rf

MySQL auto repair, check and optimize all the tables on all databases running on a  server

mysqlcheck -u root -p password –auto-repair –check –optimize –all-databases

If you know some exotic but useful unix commands, we’d be happy to add them. Simply drop us a line: submit@itecsoftware.com