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https://github.com/Erreur32/cheat.git
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255 lines
6.5 KiB
Python
255 lines
6.5 KiB
Python
#!/usr/bin/env python
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cheatsheets = {
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# @todo:
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# - adb
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# - at
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# - dd
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# - df
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# - du
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# - fdisk
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# - fstab
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# - mount
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# - mongodump
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# - mongoimport
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# - nc
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# - rsync
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# - useradd / adduser
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# - xargs
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########## apt-cache ##########################################################
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'apt-cache' : '''
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To search for apt packages:
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apt-cache search "whatever"
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''',
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########## bash ###############################################################
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'bash' : '''
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To implement a for loop:
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for file in `ls .`;
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do echo 'file';
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echo 'found';
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done
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@todo: if (esp. file/directory)
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''',
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########## convert ###########################################################
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'convert' : '''
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To resize an image to a fixed width and proportional height:
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convert original-image.jpg -resize 100x converted-image.jpg
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To resize an image to a fixed height and proportional width:
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convert original-image.jpg -resize x100 converted-image.jpg
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To resize an image to a fixed width and height:
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convert original-image.jpg -resize 100x100 converted-image.jpg
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To resize an image and simultaneously change its file type:
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convert original-image.jpg -resize 100x converted-image.png
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To resize all of the images within a directory:
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To implement a for loop:
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for file in `ls original/image/path/`;
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do new_path=${file%.*};
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new_file=`basename $new_path`;
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convert $file -resize 150 conerted/image/path/$new_file.png;
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done
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''',
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########## dd ################################################################
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'dd' : '''
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@todo
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''',
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########## dhclient ##########################################################
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'dhclient' : '''
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To release the current IP address:
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sudo dhclient -r
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To obtain a new IP address:
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sudo dhclient
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Running the above in sequence is a common way of refreshing an IP.
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''',
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########## find ##############################################################
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'find' : '''
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To find files by extension (ex: .jpg):
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find . -iname "*.jpg"
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To find directories:
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find . -type d
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To find files:
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find . -type f
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To find files by octal permission:
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find . -type f -perm 777
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To find files with setuid bit set:
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find . -xdev \( -perm -4000 \) -type f -print0 | xargs -0 ls -l
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''',
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########## git ###############################################################
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'git' : '''
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To set your identify:
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git config --global user.name "John Doe"
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git config --global user.email johndoe@example.com
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To enable color:
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git config --global color.ui true
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''',
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########## ln ################################################################
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'ln' : '''
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To create a symlink:
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ln -s path/to/the/target/directory name-of-symlink
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''',
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########## mysqldump #########################################################
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'mysqldump' : '''
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To dump a database to a file:
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mysqldump -uusername -ppassword the-database > db.sql
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To dump a database to a .tgz file:
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mysqldump -uusername -ppassword the-database | gzip -9 > db.sql
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To dump all databases to a file:
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mysqldump -uusername -ppassword --all-databases > all-databases.sql
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''',
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########## netstat ###########################################################
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'netstat' : '''
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To view which users/processes are listening to which ports:
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sudo netstat -lnptu
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''',
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########## notify-send #######################################################
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'notify-send' : '''
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To send a desktop notification via dbus:
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notify-send -i 'icon-file/name' -a 'application_name' 'summary' 'body of message'
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The -i and -a flags can be omitted if unneeded.
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''',
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########## sed ################################################################
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'sed' : '''
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To replace all occurrences of "day" with "night" and write to stdout:
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sed s/day/night file.txt
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To replace all occurrences of "day" with "night" within file.txt:
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sed s/day/night file.txt > file.txt
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To replace all occurrences of "day" with "night" on stdin:
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echo 'It is daytime' | sed s/day/night/
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''',
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########## shred ##############################################################
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'shred' : '''
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To shred a file (5 passes) and verbose output:
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shred -n 5 -v file.txt
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To shred a file (5 passes) and a final overwrite of zeroes:
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shred -n 5 -vz file.txt
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To do the above, and then truncate and rm the file:
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shred -n 5 -vzu file.txt
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To shred a partition:
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shred -n 5 -vz /dev/sda
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Remember that shred may not behave as expected on journaled file systems if file data is being journaled.
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''',
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########## split #############################################################
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'split' : '''
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To split a large text file into smaller files of 1000 lines each:
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split file.txt -l 1000
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To split a large binary file into smaller files of 10M each:
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split file.txt -b 10M
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To consolidate split files into a single file:
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cat x* > file.txt
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''',
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########## sockstat ##########################################################
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'sockstat' : '''
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To view which users/processes are listening to which ports:
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sudo sockstat -l
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''',
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########## ssh ###############################################################
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'ssh' : '''
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To execute a command on a remote server:
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ssh -t user@example.com 'the-remote-command'
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To tunnel an x session over SSH:
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ssh -X user@example.com
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To launch a specific x application over SSH:
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ssh -X -t user@example.com 'chromium-browser'
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For more information, see:
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http://unix.stackexchange.com/q/12755/44856
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''',
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########## ssh-copy-id ########################################################
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'ssh-copy-id' : '''
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To copy a key to a remote host:
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ssh-copy-id username@host
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To copy a key to a remote host on a non-standard port:
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ssh-copy-id username@host -p 2222
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''',
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########## ssh-keygen ########################################################
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'ssh-keygen' : '''
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To generate an SSH key:
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ssh-keygen -t rsa
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To generate a 4096-bit SSH key:
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ssh-keygen -t rsa -b 4096
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To copy a key to a remote host:
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ssh-copy-id username@host
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To copy a key to a remote host on a non-standard port:
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ssh-copy-id username@host -p 2222
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''',
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########## stdout #############################################################
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'stdout' : '''
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To redirect stderr to stdout:
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some-command 2>&1
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To redirect stderr to a file
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some-command 2> errors.txt
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''',
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########## tar ###############################################################
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'tar' : '''
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To extract an uncompressed archive:
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tar -xvf /path/to/foo.tar
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To extract a .gz archive:
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tar -xzvf /path/to/foo.tgz
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To create a .gz archive:
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tar -czvf /path/to/foo.tgz /path/to/foo/
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To extract a .bz2 archive:
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tar -xjvf /path/to/foo.tgz
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To create a .bz2 archive:
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tar -cjvf /path/to/foo.tgz /path/to/foo/
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''',
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}
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# Cheatsheets can be aliased under a different keyphrase like this:
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cheatsheets['dbus'] = cheatsheets['notify-send']
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cheatsheets['imagick'] = cheatsheets['convert']
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cheatsheets['redirection'] = cheatsheets['stdout']
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