Free Tutorials, Screencasts, Demos – Usage.cc

lftp

usage — Wed, 24 Aug 2016 14:31:56 +0000

lftp this is an amazing program that allows you to download or upload a site.

How to download a site supporting SFTP account using lftp.

lftp -u 'some_user' --password='some_pass' sftp://some_host:2222 -e 'set ssl:verify-certificate no; set sftp:auto-confirm yes;set ftp:list-options -a; set ftp:ssl-allow no; mirror -vvv /remote_dir/ local_target_dir/; bye'

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How to Create Swap Partition in Linux

usage — Tue, 05 Apr 2016 09:10:30 +0000

How to Create Swap Partition in Linux

# dd if=/dev/zero of=/swap.dat bs=1024 count=512K
# mkswap /swap.dat
# swapon /swap.dat

Result

524288+0 records in524288+0 records out
536870912 bytes (537 MB) copied, 3.17728 s, 169 MB/s

Edit the /etc/fstab, and the following entry.

/swap.dat      none    swap    sw      0       0

Source:

http://www.webtrafficexchange.com/solved-mysql-crash-fatal-error-cannot-allocate-memory-buffer-pool
count= was supposed to be K, but in the article it's in MB

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df

usage — Sun, 27 Mar 2016 20:24:48 +0000

Show free disk space

df -h

Show how many inodes are available

df -i

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md5deep – How to Calculate MD5 checksum of a Directory

usage — Wed, 17 Dec 2014 23:07:00 +0000

md5deep -rl /folder > /another/path/md5-list.txt

http://www.linuxquestions.org/questions/linux-software-2/how-to-create-md5sum-for-a-directory-689242/

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mytop

usage — Sun, 05 Oct 2014 21:41:20 +0000

Mytop is one of my classic open source and free console-based (non-gui) monitoring tool for MySQL database was written by Jereme Zawodny using Per.

mytop -u root --prompt -dyour db

You’ll be asked to enter a password

related: http://www.tecmint.com/mytop-mysql-database-monitoring-in-rhel-centos-fedora/

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truncate

usage — Thu, 07 Aug 2014 15:18:21 +0000

How to reduce file size by truncating it

truncate -s 0 {filename.txt}

src: http://www.cyberciti.biz/faq/truncate-large-text-file-in-unix-linux/

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find

usage — Sun, 26 Jan 2014 03:25:26 +0000

How to find files larger than 25MB in linux

find / -type f -size +25000k -exec ls -lh {} \; | awk ‘{ print $9 “: ” $5 }’

Credit:
http://www.cyberciti.biz/faq/find-large-files-linux/
http://www.cyberciti.biz/faq/how-do-i-find-the-largest-filesdirectories-on-a-linuxunixbsd-filesystem/

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zip

usage — Mon, 20 Jan 2014 03:57:51 +0000

How to create a zip archive

zip -r9 content.zip folder_to_zip/

-r is for recursive
-9 is for maximum compression

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gzip

usage — Mon, 20 Jan 2014 03:56:06 +0000

How to gz compress a file without deleting the original.

gzip < file > file.gz



credit: http://unix.stackexchange.com/questions/46786/how-to-tell-gzip-to-keep-original-file

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process memory usage

usage — Mon, 18 Mar 2013 05:50:42 +0000

ps -e -o pid,vsz,comm= | sort -n -k 2

http://superuser.com/questions/398862/linux-find-out-what-process-is-using-all-the-ram

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