Merge pull request #120 from terminalforlife/master

Add New Files & Examples

sheets/_perl/1line

@@ -380,7 +380,7 @@ perl -ne 'push @a, $_; @a = @a[@a-10..$#a]; END { print @a }'
 perl -ne '/regex/ && print'
 
 # Print only lines that do not match a regular expression
-perl -ne '!/regex/ && print'
+perl -ne '/regex/ || print'
 
 # Print the line before a line that matches a regular expression
 perl -ne '/regex/ && $last && print $last; $last = $_'

sheets/bash

@@ -38,7 +38,7 @@ echo ${PIPESTATUS[0]}  # replace 0 with N
 ( set -o noclobber; echo > my.lock ) || echo 'Failed to create lock file'
 
 # Fork bomb. Do not run this! Has the potential to wreak havoc. It repeatedly
-# and quickly spawns a bazillion processes until the system eventually locks up.
+# and quickly spawns a lot of processes until the system eventually locks up.
 :(){ :|:& };:
 # An alternative, easier-to-understand version without the obfuscation:
 func(){ func | func & }; func
@@ -47,8 +47,8 @@ func(){ func | func & }; func
 #
 #   DANGER! Don't execute!
 #
-# Luckily, most modern setups have `--preserve-root` on by default, so this will be
-# null and void, but even so, not even remotely worth the risk!
+# Luckily, most modern setups have `--preserve-root` on by default, so this
+# will be null and void, but even so, not even remotely worth the risk!
 [ $[ $RANDOM % 6 ] == 0 ] && rm -rf /* || echo Click #Roulette
 
 # A for loop one-liner.
@@ -64,19 +64,20 @@ fi
 # Test for a `PATH` executable existing as a file, but note that aliases and
 # functions will also output and result in a `0` exit status.
 command -v ${program} >/dev/null 2>&1 || error "${program} not installed"
-# However, that is a solution commonly found in a script using the Bourne shell, so
-# in this case, an alternative, Bash-like, and more accurate version could be:
+# However, that is a solution commonly found in a script using the Bourne
+# shell, so in this case, an alternative, Bash-like, and more accurate version
+# could be:
 if ! type -fP bash > /dev/null 2>&1; then
     printf "ERROR: Dependency 'bash' not met." >&2
     exit 1
 fi
 
-# Send both STDOUT and STDERR from COMMAND to FILE. The `2>&1` must go at the end.
+# Send both STDOUT and STDERR from COMMAND to FILE.
 COMMAND > FILE 2>&1
 # Send STDOUT and STDERR from COMMAND to `/dev/null`, where data goes to die.
 COMMAND > /dev/null 2>&1
 # Pipe the STDOUT and STDERR from COMMAND_1 to COMMAND_2.
 COMMAND_1 |& COMMAND_2
 
-# Verbosely convert whitespaces (` `) to underscores (`_`) in the names of files.
+# Verbosely convert whitespaces (` `) to underscores (`_`) in file names.
 for name in *\ *; do mv -vn "$name" "${name// /_}"; done

sheets/links2

@@ -0,0 +1,32 @@
+# links2
+# Lynx-like alternative character mode WWW browser
+# Note that some distributions of Linux package links2(1) as simply `links`.
+
+# Launch and browse immediately to the provided web address.
+links2 duckduckgo.co.uk
+
+# Dump the formatted result (not source) of a given page to STDOUT.
+links2 -dump duckduckgo.co.uk
+
+# When the `-dump` option is used, the user can also provide the `-width`
+# option, in order to specify the desired maximum line length, in characters.
+links2 -dump -width 80 duckduckgo.co.uk
+
+# Spoof the UA (UserAgent) which can help you visit various sites which might
+# restrict access from a non-standard browser, such as Firefox. In this case, -
+# we're faking a Mozilla Firefox 5.0 browser.
+links2 -http.fake-user-agent 'Mozilla/5.0' duckduckgo.co.uk
+
+# Have links2(1) request not to be tracked (as if anyone respects this!?). The
+# `1` is a boolean integer, indicating to enable the aforetyped option. This
+# option is by default disabled, according the August 2006 man page.
+links2 -http.do-not-track 1 duckduckgo.co.uk
+
+# Perhaps one of the most useful flags links2(1) supports enables numbered
+# links, allowing the user to simply type in the number followed by Enter or
+# Return, allowing for easier and quicker browsing.
+links2 -html-numbered-links 1 duckduckgo.co.uk
+
+# A Shell function which can be used to quickly access and search with DDG. For
+# example, the user might wish to learn about Perl, so enter: l2 Perl
+l2(){ links2 http://duckduckgo.com/?q="$*"; }

sheets/scp

@@ -0,0 +1,15 @@
+# scp
+# Secure copy (remote file copy program)
+
+# Secury copies files from remote ADDR's APTH to the current-working-directory.
+# By default here, port 22 is used, or whichever port is otherwise configured.
+scp ADDR:PATH ./
+
+# Using aliases (not Bash aliases) work with scp(1) as well. In this example, -
+# the PATH1 of the first remote source defined as ALIAS1 is sent to PATH2 of
+# the remote destination defined as ALIAS2.
+scp ALIAS1:PATH1 ALIAS2:PATH2
+
+# You can use the `-P` flag -- uppercase, unlike ssh(1) -- to determine the
+# PORT, in-case it's non-standard (not 22) or not defined within an alias.
+scp -P PORT ADDR:PATH ./

sheets/sensors

@@ -0,0 +1,13 @@
+# sensors
+# Print sensors information
+
+# By default, if possible, sensors(1) will provide temperature information in
+# Celsius. Using the `-f` option, Fahrenheit can instead be used.
+sensors -f
+
+# Display sensor information in raw output, suitable for parsing.
+sensors -u
+
+# Using sensors(1) and Perl, output only the CPU's fan speed (RPM). May not
+# work on all system's software and/or hardcore configurations.
+sensors | perl -ne '/^cpu_fan/ && print((split(" "))[1])'