alert('Unicode at sign: \u0040');
invoked using onclick.
To get the exit status (aka return code|type) of a program to the bash shell just type: echo $? (http://www.tldp.org/LDP/abs/html/exit-status.html)
Default Emacs Mode: Ctrl+U/K Clear from beginning/cursor to cursor/end Ctrl+A/E Go to beginning/end of line Esc f/b Go forward/back one word Esc backspace/d Delete word from cursor backward/forward source file read and execute file, file doesn't have to be executable
#!/usr/bin/perl -w
use MIME::Base64;
# $outFile = '>test.gif';
open( DATA, $ARGV[0] ) or die "ERROR opening file!";
#open( OUTFILE, $outFile ) or die "ERROR creating file " . $outFile . "!";
while ( <DATA> ) {
$decoded = decode_base64( $_ );
print $decoded;
# print OUTFILE $decoded; # Use to write to OUTFILE
# instead of STDOUT
}
close DATA;
$ gcc -c (doesn't link - It's "compile, then link" not "link, then compile" Geeze! $ gcc hello.cpp -o hello (Fails on OS X Tiger w/gcc 4.0 with the message: /usr/bin/ld: Undefined symbols: std::ios_base::Init::Init() std::ios_base::Init::~Init() std::cout ...etc.. But this works: $ g++ hello.cpp -o hello ...and here's the Microsoft Way... cl /EHsc /GR hello.cpp /* Static checking and analysis will find potential problems that -Wall and -Wextra (-Wmost Apple-only) won't. For Example: (from: http://developer.apple.com/tools/xcode/staticanalysis.html) */#include <stdio.h> int addTen(int n); int main(void) { float x = addTen(11.95f); printf("%f\n", x); return 0; } int addTen(int n) { return n + 10; }
A modern hello world!:#include <iostream> using namespace std; int main() { cout << "Hello, World!" << endl; return 0; }
PERL, sort, uniq: FIND OUT NUMBER OF ROWS THAT REPEAT: ------------------------------------------------------- $ perl -pe 's/[^0-9A-Z\n]//gi' dup_test | sort | uniq -id $ perl -pe 's/[^0-9\n]//g' dup_test ** /g for global is key because w/o it only one substitution per line is made ** ** MS Word/HTML table parser may work now with this revelation ** $ perl -pe 's/ \D//g' dup_test | sort | uniq -c 4 123 1 444 1 456
wget -r -l 2 -k http://somesite.com (-k converts downloaded files so their links are locally-usable) (-r -l 2 causes recursion two levels deep)
ADDR/add \n: Use this on cmd line to parse out only field 1 where it begins with five 0's: ------------ gawk '/^00000/ {print $1}' input.txt > output.txt gawk '/^$/ {print \n $0}else{print $0}' input.txt > output.txt gawk '/\$/{print "\n"$0} $0 !~ /\$/ {print $0}' input.txt > output.txt Not Equal/Not Contains (:2): ----------------------- gawk '$0!~/:2/{print $0}' INPUT_FILE.txt > OUTPUT_FILE.txt CREATE LINKS TO PARTICULAR FILES IN A DIR: ------------------------------------------ $ gawk -F- '{print "<tr><td>" $2 "<td><a href=\"file://W:/some_dir/" $1 "/" $2 "/" substr($0, 1, 20) "\" target=\"pf\">" substr($3, 1, 6) "</a><td>" substr($3,12)}' OUTPUT_FILE_MORE_THAN_2_PGS.txt > HTML_w_more_than_2_pgs.html SQL INSERTS FROM FILE SIZE: --------------------------- First do a: ls > file_list: Then: ls -l | gawk '{print "update some_table set size = " $5 " where pk_file = \x027" substr($9, 1, 4) "\x027 and some_customer = \x027CUST_ID\x027 ;\r"}' Remove Blank lines from a text file : ------------------------------------- Use Cygwin gawk or maybe even Solaris awk?: gawk 'length($0) > 0 {print $0}' file_with_blanks > new_file_wo_blanks Renaming Files/Padding Zeroes: ------------------------------ Output to batch file to check output and then run from cmd: ls -1 | gawk 'length($0) == 8 {print "ren " $0 " 0" $0 "\r"}' > rename.bat or Run immediately: ls -1 | gawk 'length($0) == 8 {system("mv " $0 " 0" $0)}' MISC: ----- gawk -F{ '{print $8}' file > file_gawked.txt (field separator is "{") gawk 'FIELDWIDTHS= 35 {print $1}' file.txt To add ' aphostrophe's/single quotes to use in IN ('SQL') lists: gawk '{print "\x27" $0 "\x27," "\r"}' in.txt > out.txt -OR- use TextPad macro. Rename files in a directory (cut off the first 38 chars in the name): ls -1 | gawk '{print "mv \x22" $0 "\x22 \x22" substr($0, 38) "\x22"}' > mvIT NOTES: \x22 = hex code for " Analyize Netgear Home Router Logs: gawk -F] '/192.168.0.2/ {print $1}' 0*.log > all_logs.txt gawk -F. ' {print gensub("\\[ALLOW:",x,1,$(NF - 1)) }' all_logs.txt | sort | uniq -c | sort > all_logs_final.txt gawk '{if ($0 !~ /^\[ALLOW/) print $0}' 0*.log | sort | uniq | less
Windows | Unix | Description |
---|---|---|
makecab | gzip, bzip2, compress | file compression |
cls | clear | clear terminal window |
ntsd -pn "someProgram.exe" -c "q" or ntsd -p PID -c "q" or PsKill or taskkill (WinXP Pro) | kill [-9]PID | end a process |
****** COOL CYGWIN PACKAGES/UTILITIES/COMMANDS ****** clamscan -i -v filename runs the Clam Antivirus Scanner (clamav) from the commandline. It found viruses in Mozilla Mail files which AVG Antivirus missed: Trojan.Dropper.JS.Zerolin-6 and HTML.Phishing.Bank-1 update clamav using "freshclam" iconv - convert file encodings (e.g. ISO-8859-1 (Latin) to UTF-8) (or tryfile -i filename
orkonwert
(debian pkg)) od - octal (and other types) dump split - split large files, use cat to put them back together $ cat hug* > another-hug.jpg use diff to make sure there's no difference (http://www.linuxworld.com/go.cgi?id=742494) *************************** swig - the Simplified Wrapper and Interface Generator, is a tool for easing the interfacing of C/C++ libraries to scripting languages. Profiler in cygwin -- in bintools? - gprof How can I find out which dlls are needed by an executable? `objdump -p' provides this information, but is rather verbose. `cygcheck' will do this much more concisely, and operates recursively, provided the command is in your path. From: cygwin.com/bugs.html - "Another common problme is attempting to modify the contents of a C "string". On Cygwin (and many UNIXes) strings are stored in read-only memory. So, it is not possible to modify them. You can change this behavior with the gcc option -fwritable-strings but we suggest that it is better to change your program. [2003-02] From Cygwin mailing list: Parsing XML to HTML: from a script... xsltproc --output /tmp/db2html.html styesheet.xsl "$@" .... Typing 'export' w/ no var name prints out all the vars gdb does not have a GUI - type 'insight' instead Upgraded by running latest Cygwin 1.5.7 (?) - a big change from the previous verion I had installed (1.3.19?) since 64-bit file I/O is implemented, also got source of zip (PKZIP compatible) (downloaded from 198.9.9.17:21 aka squid.nas.nasa.gov) ELFIO - make Linux ELF binary formatted files DEVELOPMENT / LANGUAGES: clisp: ANSI Common Lisp hexedit: hex editor libusb-win32: USB Programming Library libgc: Boehm-Demers-Weiser conservative gc for C/C++ popt: library for parsing cmdline parameters python: interactive OO language nasm 0.98.38-1: The Netwide Assembler (to compile Mozilla?) (not installed) pdksh 5.2.14-3 perl 5.8.2-1 and perl-libwin32: Perl extensions for using Win32 API postgresql 7.4.1-3 speex/libspeex1/speex-devel: OpenSource, patent-free speech codec ruby: interpreted, OO language rpm, dpkg tcm: Toolkit for Conceptual Modeling (TCM) WordNet: online lexical reference system xdelta/libxdelta2: computes changes between binary files (runtime) FUN: ctetris: console version of Tetris GRAPHICS: aalib/libaa1: ASCII Art Library / runtime exif/libexif: display EXIF info on the commandline jasper: JPEG-2000 library libjpeg62/libjpeg6b: manipulate JPEG files libpng/10/12: manipulate PNG files libwmf: reads vector image in Windows Metafile Format (WMF) xgraph: Xgraph MATH: bc/gmp - arbitrary precision calculator/library - can show many, many digits after the decimal place of e, pi, etc: start bc with the -l option to preload the math library. scale = ?? (where ?? is the limit in C of a 32-bit integer?) e (1) (for natural e) singular - is a Computer Algebra System for polynomial computations with special emphasis on the needs of commutative algebra, algebraic geometry, and singularity theory. NETWORKING: inetutils 1.3.2-25: Common networking utilities and servers netcat xinetd: The extended Internet services daemon UTILITIES: cygstart iexplore www.google.com launch windows programs rebase 2.2-3 sharutils 4.2.1-3: The GNU shar utilities including uuencode/uudecode upx: a free, portable, extendable, high-perf. executable packager wtf: Translates acronyms and filename suffixes catdoc has been added to the cygwin distribution. It features 4 binaries, catdoc, xls2csv, catppt and wordview to list the content of MS-Word, Excel and Powerpoint files. http://www.45.free.net/~vitus/software/catdoc/