Download to read offline
![@MC
GSSOVVVEQDDARCNQFG@MCANNJBNMEHFSTMHMF
JDQMDK
KHLHSRGSLK
GSSORDQUDQE@TKSBNLPTDRSHNMREQDDARC
ODQENQL@MBD
STMHMF
RXRBSKR
KN@CDQ
BNME
JDQMDK
c3XRSDLc
Theprogramsimplecpp.cpp
#includeIPv4.h
#includeiostream
#includestring
usingnamespacestd;
intmain(intargc,char*argv[]){
stringipstr;//definevariables
unsignedlongipint=1347861486;//TheIPinintegerform
GenericUtils::IPv4iputils;//createanobjectoftheclass
ipstr=iputils.IPint_to_IPquad(ipint);//calltheclassmember
coutipint=ipstrendl;//printtheresult
return0;
}
#NLOHKD@MCDWDBTSDVHSG
#g++-cIPv4.cppsimplecpp.cpp#Compileinobjects
#g++IPv4.osimplecpp.o-osimplecpp.exe#Linktheobjectstofinalexecutable
#./simplecpp.exe
1347861486=80.86.187.238
5RDlddSNBGDBJVGHBGKHAQ@QHDR@QDTRDCAXSGDDWDBTS@AKD@MCVGDQDSGDX@QDKNB@SDC!KRNTRDC
SNBGDBJHE@RG@QDCKHAQ@QXHRLHRRHMFNQHESGDDWDBTS@AKDHRRS@SHB
#ldd/sbin/ifconfig#listdynamicobjectdependencies
#arrcsstaticlib.a*.o#createstaticarchive
#artstaticlib.a#printtheobjectslistfromthearchive
#arx/usr/lib/libc.aversion.o#extractanobjectfilefromthearchive
#nmversion.o#showfunctionmembersprovidedbyobject
22.5SimpleMakefile
4GDLHMHL@K-@JDEHKDENQSGDLTKSH
RNTQBDOQNFQ@LHRRGNVMADKNV4GDKHMDRVHSGHMRSQTBSHNMRmust
beginwithatab4GDA@BJRK@RGB@MADTRDCSNBTSKNMFKHMDR
CC=g++
CFLAGS=-O
OBJS=IPv4.osimplecpp.o
simplecpp:${OBJS}
${CC}-osimplecpp${CFLAGS}${OBJS}
clean:
rm-f${TARGET}${OBJS}
23ONLINEHELP
23.1Documentation
,HMTW$NBTLDMS@SHNMDMSKCONQF
,HMTW-@M0@FDRVVVKHMTWL@MO@FDRBNL
,HMTWBNLL@MCRCHQDBSNQXVVVNQDHKKXMDSBNLKHMTWBLC
,HMTWCNBL@MGNVSNRKHMTWCHDMDS
QDD3$(@MCANNJVVVEQDDARCNQFG@MCANNJ
QDD3$-@M0@FDRVVVEQDDARCNQFBFHL@MBFH
QDD3$TRDQVHJHVVVEQDDARCVHJHMDS
3NK@QHR-@M0@FDRCNBRRTMBNL@OOCNBRBNKK
23.2OtherUnix/Linuxreferences
2NRDSS@3SNMDENQ5MHWAG@LHBNLQNRDSS@GSLK@5MHWBNLL@MCSQ@MRK@SNQ
5MHWFTHCDBQNRRQDEDQDMBDTMHWFTHCDMDSTMHWFTHCDRGSLK
,HMTWBNLL@MCRKHMDKHRSVVVKHMTWBLCNQF
c/MKHMD(DKOc](https://image.slidesharecdn.com/unixtoolboxbook3464-130808201809-phpapp01/75/unixtoolbox-book-16-2048.jpg)
![@CC
SGDNOSHNMNO_CLEAN=YESSNSGDL@JDBNLL@MCSN@UNHCBKD@MHMFSGDNAIDBSR@KQD@CXATHKC
#cd/usr/src/sys/i386/conf/
#cpGENERICMYKERNEL
#cd/usr/src
#makebuildkernelKERNCONF=MYKERNEL
#makeinstallkernelKERNCONF=MYKERNEL
4NQDATHKCSGDETKK/3
#makebuildworld#BuildthefullOSbutnotthekernel
#makebuildkernel#UseKERNCONFasaboveifappropriate
#makeinstallkernel
#reboot
#mergemaster-p#Comparesonlyfilesknowntobeessential
c3XRSDLc
[^$.|?*+()#specialcharactersanyotherwillmatchthemselves
#escapesspecialcharactersandtreatasliteral
*#repeatthepreviousitemzeroormoretimes
.#singlecharacterexceptlinebreakcharacters
.*#matchzeroormorecharacters
^#matchatthestartofaline/string
$#matchattheendofaline/string
.$#matchasinglecharacterattheendofline/string
^$#matchlinewithasinglespace
[^A-Z]#matchanylinebeginningwithanycharfromAtoZ
21.6Someusefulcommands
4GDENKKNVHMFBNLL@MCR@QDTRDETKSNHMBKTCDHM@RBQHOSNQ@RNMDKHMDQR
sort-t.-k1,1n-k2,2n-k3,3n-k4,4n#SortIPv4ipaddresses
echo'Test'|tr'[:lower:]''[:upper:]'#Caseconversion
echofoo.bar|cut-d.-f1#Returnsfoo
PID=$(ps|grepscript.sh|grepbin|awk'{print$1}')#PIDofarunningscript
PID=$(psaxww|grep[p]ing|awk'{print$1}')#PIDofping(w/ogreppid)
IP=$(ifconfig$INTERFACE|sed'/.*inetaddr:/!d;s///;s/.*//')#Linux
IP=$(ifconfig$INTERFACE|sed'/.*inet/!d;s///;s/.*//')#FreeBSD
if[`difffile1file2|wc-l`!=0];then[...]fi#Filechanged?
cat/etc/master.passwd|grep-vroot|grep-v*:|awk-F:#Createhttppasswd
'{printf(%s:%sn,$1,$2)}'/usr/local/etc/apache2/passwd
testuser=$(cat/usr/local/etc/apache2/passwd|grep-v#Checkuserinpasswd
root|grep-v*:|awk-F:'{printf(%sn,$1)}'|grep^user$)
:(){:|:};:#bashforkbomb.Willkillyourmachine
tail+2filefile2#removethefirstlinefromfile
)TRDSGHRKHSSKDSQHBJSNBG@MFDSGDEHKDDWSDMRHNMENQL@MXEHKDR@SNMBDNQDW@LOKDEQNLBWWSN
BOO4DRSHSEHQRSVHSGNTSSGD|sh@SSGDDMC9NTB@M@KRNCNSGHRVHSGSGDBNLL@MCrenameHE
HMRS@KKDC/QVHSGA@RGATHKSHMR
#ls*.cxx|awk-F.'{printmv$0$1.cpp}'|sh
#ls*.c|seds/.*/cp.$(date+%Y%m%d)/|sh#e.g.copy*.cto*.c.20080401
#rename.cxx.cpp*.cxx#Renameall.cxxtocpp
#foriin*.cxx;domv$i${i%%.cxx}.cpp;done#withbashbuiltins
22PROGRAMMING
22.1Cbasics
strcpy(newstr,str)/*copystrtonewstr*/
expr1?expr2:expr3/*if(expr1)expr2elseexpr3*/
x=(yz)?y:z;/*if(yz)x=y;elsex=z;*/
inta[]={0,1,2};/*Initializedarray(ora[3]={0,1,2};*/
inta[2][3]={{1,2,3},{4,5,6}};/*Arrayofarrayofints*/
inti=12345;/*Convertinitocharstr*/
charstr[10];
sprintf(str,%d,i);
22.2Cexample
!LHMHL@KBOQNFQ@LRHLOKDB
#includestdio.h
main(){
intnumber=42;
printf(Theansweris%in,number);
}
#NLOHKDVHSG
c0QNFQ@LLHMFc](https://image.slidesharecdn.com/unixtoolboxbook3464-130808201809-phpapp01/75/unixtoolbox-book-28-2048.jpg)
![Generateafile
MYHOME=/home/colin
cattesthome.sh_EOF
#Allofthisgoesintothefiletesthome.sh
if[-d$MYHOME];then
echo$MYHOMEexists
else
echo$MYHOMEdoesnotexist
fi
_EOF
shtesthome.sh
21.2Bournescriptexample
!R@RL@KKDW@LOKD](https://image.slidesharecdn.com/unixtoolboxbook3464-130808201809-phpapp01/75/unixtoolbox-book-29-2048.jpg)
![SGDRBQHOSTRDCSNBQD@SD@0$ANNJKDSEQNLSGHRWGSLKCNBTLDMS
#!/bin/sh
#Thisscriptcreatesabookinpdfformatreadytoprintonaduplexprinter
if[$#-ne1];then#Checktheargument
echo12Usage:$0HtmlFile
exit1#nonzeroexitiferror
fi
file=$1#Assignthefilename
fname=${file%.*}#Getthenameofthefileonly
fext=${file#*.}#Gettheextensionofthefile
prince$file-o$fname.pdf#fromwww.princexml.com
pdftops-paperA4-noshrink$fname.pdf$fname.ps#createpostscriptbooklet
cat$fname.ps|psbook|psnup-Pa4-2|pstops-b2:0,1U(21cm,29.7cm)$fname.book.ps
ps2pdf13-sPAPERSIZE=a4-sAutoRotatePages=None$fname.book.ps$fname.book.pdf
#use#a4and#NoneonWindows!
exit0#exit0meanssuccessful
21.3Someawkcommands
!VJHRTRDETKENQEHDKCRSQHOOHMF](https://image.slidesharecdn.com/unixtoolboxbook3464-130808201809-phpapp01/75/unixtoolbox-book-30-2048.jpg)
Uploaded byJie Bao
unixtoolbox.book
This document contains a collection of UNIX/Linux commands and tools for retrieving system information such as the operating system version, hardware details, running processes, network configuration, storage usage and more. It provides concise explanations and examples of commands for gathering key system data through examining files, running utilities and viewing process information.
![Coded Agents – with UiPath SDK + LangGraph [Virtual Hands-on Workshop]](https://cdn.slidesharecdn.com/ss_thumbnails/codedagentsdeck-251215155422-5497c599-thumbnail.jpg?width=640&height=640&fit=bounds)
![Vibe Coding vs. Spec-Driven Development [Free Meetup]](https://cdn.slidesharecdn.com/ss_thumbnails/vibecodingvsspecdrivendevelopment-251209105622-43f455e7-thumbnail.jpg?width=640&height=640&fit=bounds)
unixtoolbox.book
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