Merge pull request #1 from chrisallenlane/master

learning amigo
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ALJI Mohamed 2017-12-14 16:09:24 +01:00 committed by GitHub
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13 changed files with 78 additions and 3 deletions

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@ -42,7 +42,7 @@ from docopt import docopt
if __name__ == '__main__': if __name__ == '__main__':
# parse the command-line options # parse the command-line options
options = docopt(__doc__, version='cheat 2.2.1') options = docopt(__doc__, version='cheat 2.2.2')
# list directories # list directories
if options['--directories']: if options['--directories']:

5
cheat/cheatsheets/alias Normal file
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@ -0,0 +1,5 @@
# Show a list of your current shell aliases
alias
# Map `ll` to `ls -l` (Can be used per session or put inside a shell config file)
alias ll='ls -l'

8
cheat/cheatsheets/cat Normal file
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@ -0,0 +1,8 @@
# Display the contents of a file
cat /path/to/foo
# Display contents with line numbers
cat -n /path/to/foo
# Display contents with line numbers (blank lines excluded)
cat -b /path/to/foo

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cheat/cheatsheets/cp Normal file
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@ -0,0 +1,11 @@
# Create a copy of a file
cp ~/Desktop/foo.txt ~/Downloads/foo.txt
# Create a copy of a directory
cp -r ~/Desktop/cruise_pics/ ~/Pictures/
# Create a copy but ask to overwrite if the destination file already exists
cp -i ~/Desktop/foo.txt ~/Documents/foo.txt
# Create a backup file with date
cp foo.txt{,."$(date +%Y%m%d-%H%M%S)"}

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@ -36,3 +36,6 @@ curl --limit-rate 1000B -O http://path.to.the/file
# Get your global IP # Get your global IP
curl httpbin.org/ip curl httpbin.org/ip
# Get only the HTTP status code
curl -o /dev/null -w '%{http_code}\n' -s -I URL

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@ -1,7 +1,7 @@
# Read from {/dev/urandom} 2*512 Bytes and put it into {/tmp/test.txt} # Read from {/dev/urandom} 2*512 Bytes and put it into {/tmp/test.txt}
# Note: At the first iteration, we read 512 Bytes. # Note: At the first iteration, we read 512 Bytes.
# Note: At the second iteration, we read 512 Bytes. # Note: At the second iteration, we read 512 Bytes.
dd if=/dev/urandom of=/tmp/test.txt count=512 bs=2 dd if=/dev/urandom of=/tmp/test.txt count=2 bs=512
# Watch the progress of 'dd' # Watch the progress of 'dd'
dd if=/dev/zero of=/dev/null bs=4KB &; export dd_pid=`pgrep '^dd'`; while [[ -d /proc/$dd_pid ]]; do kill -USR1 $dd_pid && sleep 1 && clear; done dd if=/dev/zero of=/dev/null bs=4KB &; export dd_pid=`pgrep '^dd'`; while [[ -d /proc/$dd_pid ]]; do kill -USR1 $dd_pid && sleep 1 && clear; done

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cheat/cheatsheets/export Normal file
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@ -0,0 +1,5 @@
# Calling export with no arguments will show current shell attributes
export
# Create new environment variable
export VARNAME="value"

5
cheat/cheatsheets/kill Normal file
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@ -0,0 +1,5 @@
# Kill a process gracefully
kill -15 <process id>
# Kill a process forcefully
kill -9 <process id>

14
cheat/cheatsheets/mv Normal file
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@ -0,0 +1,14 @@
# Move a file from one place to another
mv ~/Desktop/foo.txt ~/Documents/foo.txt
# Move a file from one place to another and automatically overwrite if the destination file exists
# (This will override any previous -i or -n args)
mv -f ~/Desktop/foo.txt ~/Documents/foo.txt
# Move a file from one place to another but ask before overwriting an existing file
# (This will override any previous -f or -n args)
mv -i ~/Desktop/foo.txt ~/Documents/foo.txt
# Move a file from one place to another but never overwrite anything
# (This will override any previous -f or -i args)
mv -n ~/Desktop/foo.txt ~/Documents/foo.txt

2
cheat/cheatsheets/pwd Normal file
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@ -0,0 +1,2 @@
# Show the absolute path of your current working directory on the filesystem
pwd

18
cheat/cheatsheets/wc Normal file
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@ -0,0 +1,18 @@
# Count the number of words (file or STDIN)
wc -w /path/to/foo.txt
cat /path/to/foo.txt | wc -w
# Count the number of lines (file or STDIN)
wc -l /path/to/foo.txt
cat /path/to/foo.txt | wc -l
# Count the number of bytes (file or STDIN)
wc -c /path/to/foo.txt
cat /path/to/foo.txt | wc -c
# Count files and directories at a given location
ls -l | wc -l
# If you ever use `wc` in a shell script and need to compare the output with an int you can
# clean the output (wc returns extra characters around the integer) by using xargs:
ls -l | wc -l | xargs

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@ -10,3 +10,7 @@ find -name *.pdf | xargs -I{} rm -rf '{}'
# -n1 => One file by one file. ( -n2 => 2 files by 2 files ) # -n1 => One file by one file. ( -n2 => 2 files by 2 files )
find -name *.pdf | xargs -I{} -n1 echo '&{}=' find -name *.pdf | xargs -I{} -n1 echo '&{}='
# If find returns no result, do not run rm
# This option is a GNU extension.
find -name "*.pdf" | xargs --no-run-if-empty rm

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@ -3,7 +3,7 @@ import os
setup( setup(
name = 'cheat', name = 'cheat',
version = '2.2.1', version = '2.2.2',
author = 'Chris Lane', author = 'Chris Lane',
author_email = 'chris@chris-allen-lane.com', author_email = 'chris@chris-allen-lane.com',
license = 'GPL3', license = 'GPL3',