Commands by coolman (1)

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Create a backup of the file.
It will create a backup of the filename. The advantage is that if you list the folder the backups will be sorted by date. The command works on any unix in bash.

calulate established tcp connection of local machine
If you want prepend/append text just wrap in echo: $echo Connected: `netstat -an|grep -ci "tcp.*established"`

mysql DB size

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

locating packages held back, such as with "aptitude hold "
locating packages held back, such as with "aptitude hold "

mirrors directory to a ftp server
http://lftp.yar.ru/

Write comments to your history.
A null operation with the name 'comment', allowing comments to be written to HISTFILE. Prepending '#' to a command will *not* write the command to the history file, although it will be available for the current session, thus '#' is not useful for keeping track of comments past the current session.

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

Dump and bz2compress a mysql db
To also move the db backup to another location you could pass the output to the dd command instead of a file $mysqldump -u user -h host -ppwd -B dbname | bzip2 -zc9 | dd ssh usr@server "dd of=db_dump"

Rename files in batch


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