Patch version bump

2.1.13

bin/cheat

@@ -38,7 +38,7 @@ from docopt import docopt
 
 if __name__ == '__main__':
     # parse the command-line options
-    options = docopt(__doc__, version='cheat 2.1.9')
+    options = docopt(__doc__, version='cheat 2.1.14')
 
     # list directories
     if options['--directories']:

cheat/cheatsheets/csplit

@@ -0,0 +1,5 @@
+# Split a file based on pattern
+csplit input.file '/PATTERN/'
+
+# Use prefix/suffix to improve resulting file names
+csplit -f 'prefix-' -b '%d.extension' input.file '/PATTERN/' '{*}'

cheat/cheatsheets/date

@@ -1,2 +1,5 @@
-# Printout date in format suitable for affixing to file names
+# Print date in format suitable for affixing to file names
 date +"%Y%m%d_%H%M%S"
+
+# Convert Unix timestamp to Date
+date -d @1440359821

cheat/cheatsheets/du

@@ -1,2 +1,5 @@
 # To sort directories/files by size
 du -sk *| sort -rn
+
+# To show cumulative humanreadable size
+du -sh

cheat/cheatsheets/ffmpeg

@@ -0,0 +1,12 @@
+# Print file metadata etc.
+ffmpeg -i path/to/file.ext
+
+# Convert all m4a files to mp3
+for f in *.m4a; do ffmpeg -i "$f" -acodec libmp3lame -ab 320k "${f%.m4a}.mp3"; done
+
+# Listen to 10 seconds of audio from a video file
+#
+# -ss : start time
+# -t  : seconds to cut
+# -autoexit : closes ffplay as soon as the audio finishes
+ffmpeg -ss 00:34:24.85 -t 10 -i path/to/file.mp4 -f mp3 pipe:play | ffplay -i pipe:play -autoexit

cheat/cheatsheets/git

@@ -1,4 +1,4 @@
-# To set your identify:
+# To set your identity:
 git config --global user.name "John Doe"
 git config --global user.email johndoe@example.com
 
@@ -17,9 +17,25 @@ git commit -m "Your commit message"
 # To edit previous commit message
 git commit --amend
 
+# Git commit in the past
+git commit --date="`date --date='2 day ago'`"
+git commit --date="Jun 13 18:30:25 IST 2015"
+# more recent versions of Git also support --date="2 days ago" directly
+
+# To change the date of an existing commit
+git filter-branch --env-filter \
+    'if [ $GIT_COMMIT = 119f9ecf58069b265ab22f1f97d2b648faf932e0 ]
+     then
+         export GIT_AUTHOR_DATE="Fri Jan 2 21:38:53 2009 -0800"
+         export GIT_COMMITTER_DATE="Sat May 19 01:01:01 2007 -0700"
+     fi'
+
 # To removed staged and working directory changes
 git reset --hard
 
+# To go 2 commits back
+git reset --hard HEAD~2
+
 # To remove untracked files
 git clean -f -d
 
@@ -35,6 +51,9 @@ git push git@github.com:username/project.git
 # To delete the branch "branch_name"
 git branch -D branch_name
 
+# To make an exisiting branch track a remote branch
+git branch -u upstream/foo
+
 # To see who commited which line in a file
 git blame filename
 
@@ -57,3 +76,31 @@ git log --pretty=email --patch-with-stat --reverse --full-index -- Admin\*.py >
 
 # Import commits from another repo
 git --git-dir=../some_other_repo/.git format-patch -k -1 --stdout <commit SHA> | git am -3 -k
+
+# View commits that will be pushed
+git log @{u}..
+
+# View changes that are new on a feature branch
+git log -p feature --not master
+git diff master...feature
+
+# Interactive rebase for the last 7 commits
+git rebase -i @~7
+
+# Diff files WITHOUT considering them a part of git
+# This can be used to diff files that are not in a git repo!
+git diff --no-index path/to/file/A path/to/file/B
+
+# To pull changes while overwriting any local commits
+git fetch --all
+git reset --hard origin/master
+
+# Update all your submodules
+git submodule update --init --recursive
+
+# Perform a shallow clone to only get latest commits
+# (helps save data when cloning large repos)
+git clone --depth 1 <remote-url>
+
+# To unshallow a clone
+git pull --unshallow

cheat/cheatsheets/grep

@@ -1,13 +1,13 @@
-# Basic:
+# Search a file for a pattern
 grep pattern file
 
-# case nonsensitive research:
-grep -i pattern file
+# Case insensitive search (with line numbers)
+grep -in pattern file
 
 # Recursively grep for string <pattern> in folder:
 grep -R pattern folder
 
-# Getting pattern from file (one by line):
+# Read search patterns from a file (one per line)
 grep -f pattern_file file
 
 # Find lines NOT containing pattern
@@ -17,7 +17,7 @@ grep -v pattern file
 grep "^00" file  #Match lines starting with 00
 grep -E "[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}" file  #Find IP add
 
-# Find all files who contain {pattern} in the directory {directory}.
+# Find all files which match {pattern} in {directory}
 # This will show: "file:line my research"
 grep -rnw 'directory' -e "pattern"
 

cheat/cheatsheets/ln

@@ -1,2 +1,5 @@
 # To create a symlink:
 ln -s path/to/the/target/directory name-of-symlink
+
+# Symlink, while overwriting existing destination files
+ln -sf /some/dir/exec /usr/bin/exec

cheat/cheatsheets/man

@@ -0,0 +1,5 @@
+# Convert a man page to pdf
+man -t bash | ps2pdf - bash.pdf
+
+# View the ascii chart
+man 7 ascii

cheat/cheatsheets/numfmt

@@ -0,0 +1,2 @@
+# Convert bytes to Human readable format
+numfmt --to=iec --suffix=B --padding=7 1048576

cheat/cheatsheets/ssh

@@ -28,3 +28,7 @@ ssh user@example.com -C -c blowfish -X
 
 # For more information, see:
 # http://unix.stackexchange.com/q/12755/44856
+
+# Copy files and folders through ssh from remote host to pwd with tar.gz compression
+# when there is no rsync command available
+ssh user@example.com "cd /var/www/Shared/; tar zcf - asset1 asset2" | tar zxf -

cheat/cheatsheets/vagrant

@@ -0,0 +1,33 @@
+# Initate Vagrant
+mkdir vag-vm; cd vag-vm
+vagrant init
+
+# Add a box to vagrant repo
+vagrant box add hashicorp/precise32
+
+# Add a box  Vagrant file
+config.vm.box = "hashicorp/precise32"
+
+# Add vm to public network as host
+config.vm.network "public_network"
+
+# Add provision script to vagrant file
+config.vm.provision :shell, path: "provision.sh"
+
+# Start vm 
+vagrant up
+
+# Connect to started instance
+vagrant ssh
+
+# Shutdown vm
+vagrant halt
+
+# Hibernate vm
+vagrant suspend
+
+# Set vm to initial state by cleaning all data
+vagrant destroy
+
+# Restart vm with new provision script
+vagran reload --provision

setup.py

@@ -3,7 +3,7 @@ import os
 
 setup(
     name         = 'cheat',
-    version      = '2.1.9',
+    version      = '2.1.14',
     author       = 'Chris Lane',
     author_email = 'chris@chris-allen-lane.com',
     license      = 'GPL3',