The following command will list all the open tcp and udp connections
netstat -anp --tcp --udp
The following command will list all the open tcp and udp connections
netstat -anp --tcp --udp
This command will list top 10 files and directories by size.
find / -printf '%s %p\n'| sort -nr | head -10
To find just the large files and skip the directories, run the following command
find / -type f -printf '%s %p\n'| sort -nr | head -10
To fine the large files of a certain type, run the following command
find / -type f -iname "*.gz" -printf '%s %p\n'| sort -nr | head -10
An alternate way of finding out the biggest files and folders is:
du -a / | sort -n -r | head -n 10
An inode is used for every file in the filesystem. If the system is running out of inodes that means there are some directories with a lot of files in them.
The following command will find the directories with most files.
find / -xdev -printf '%h\n' | sort | uniq -c | sort -k 1 -n
The following command list free inodes on all filesystems
df -hi
Empty an in-use nohup.out file
cat /dev/null >nohup.out
If the file is not in use, the following works in bash
> foo.log
The command above empties out the file foo.log
If sudo is needed, truncate can be used as well
sudo truncate -s 0 foo.log
-s is the size option. 0 in this example sets the size to 0 bytes