编译bash实现history的syslog日志记录

分类：Bash作者：编程之家用户

一、下载bash源码包

[root@repoother_x86_64]#http://vault.centos.org/6.9/os/Source/SPackages/bash-4.1.2-48.el6.src.rpm

二、安装源码包

[root@repoother_x86_64]#rpm-ivhbash-4.1.2-48.el6.src.rpm#警告可以忽略
1:bashwarning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
###########################################[100%]
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroot
warning:usermockbuilddoesnotexist-usingroot
warning:groupmockbuilddoesnotexist-usingroo

spacer.gif

wKioL1l21myi-066AAD32PdoAR4430.png

[root@repo~]#ll
total7208056
-rw-------.1rootroot1891Jul72016anaconda-ks.cfg
-rw-r--r--1rootroot6686039Jul112016bash-4.1.2-40.el6.src.rpm
-rw-r--r--.1rootroot41443Jul72016install.log
-rw-r--r--.1rootroot7572Jul72016install.log.syslog
drwxr-xr-x8rootroot4096Jul112016rpmbuild
[root@repo~]#cdrpmbuild/
[root@reporpmbuild]#ll
total24
drwxr-xr-x3rootroot4096Jul112016BUILD
drwxr-xr-x2rootroot4096Jul112016BUILDROOT
drwxr-xr-x3rootroot4096Jul112016RPMS
drwxr-xr-x4rootroot4096Jul2510:47SOURCES
drwxr-xr-x2rootroot4096Jul2510:47SPECS
drwxr-xr-x2rootroot4096Jul112016SRPMS

wKioL1l21vLjBu5eAAAlonWNr2s356.png

三、重新编译

[root@reporpmbuild]#cdSOURCES/
[root@repoSOURCES]#tarxfbash-4.1.tar.gz
[root@repoSOURCES]#cp-abash-4.1bash-4.1-orig
[root@repoSOURCES]#cdbash-4.1
[root@repobash-4.1]#vimconfig-top.h+104
/*#defineSYSLOG_HISTORY*/
#ifdefined(SYSLOG_HISTORY)
#defineSYSLOG_FACILITYLOG_USER
#defineSYSLOG_LEVELLOG_INFO
#endif

wKioL1l22AzR7CcBAAATFhAmnSQ905.png

修改为

#defineSYSLOG_HISTORY
#ifdefined(SYSLOG_HISTORY)
#defineSYSLOG_FACILITYLOG_LOCAL1
#defineSYSLOG_LEVELLOG_DEBUG
#endif

wKioL1l22FiiO6f7AAASF5KO9Fg645.png

[root@repobash-4.1]#vimbashhist.c+701
void
bash_syslog_history(line)
constchar*line;
{
chartrunc[SYSLOG_MAXLEN];
if(strlen(line)<SYSLOG_MAXLEN)
syslog(SYSLOG_FACILITY|SYSLOG_LEVEL,"HISTORY:PID=%dUID=%d%s",getpid(),current_user.uid,line);
else
{
strncpy(trunc,line,SYSLOG_MAXLEN);
trunc[SYSLOG_MAXLEN-1]='\0';
syslog(SYSLOG_FACILITY|SYSLOG_LEVEL,"HISTORY(TRUNCATED):PID=%dUID=%d%s",trunc);
}
}

wKiom1l22KSBF8hpAAA5c35bMcA415.png

修改为

void
bash_syslog_history(line)
constchar*line;
{
chartrunc[SYSLOG_MAXLEN];
if(strlen(line)<SYSLOG_MAXLEN)
syslog(SYSLOG_FACILITY|SYSLOG_LEVEL,"HISTORY:PPID=%dPID=%dSID=%dUID=%dUser=%s%s",getppid(),getsid(getpid()),current_user.user_name,"HISTORY(TRUNCATED):PPID=%dPID=%dSID=%dUID=%dUser=%s%s",trunc);
}
}
#endif

wKioL1l22O7DLKDuAABB6WxDJFw436.png

[root@repobash-4.1]#cd..
[root@repoSOURCES]#diff-Nprubash-4.1-origbash-4.1>bash_history_syslog.patch
[root@repoSOURCES]#ls
bash-2.02-security.patchbash-4.1-bind_int_variable.patchbash-4.1-origbash-4.3-fix-terminate_immediately.patch
bash-2.03-paths.patchbash-4.1-brace-expansion.patchbash-4.1-posix-block-size-for-cf-options.patchbash-4.3-read-sigterm.patch
bash-2.03-profile.patchbash-4.1-broken_pipe.patchbash-4.1-sighup-deadlock.patchbash-4.4-param-expansion.patch
bash-2.05a-interpreter.patchbash-4.1-defer-sigchld-trap.patchbash-4.1-signal.patchbash-bashbug.patch
bash-2.05b-debuginfo.patchbash-4.1-enable-hyphened-fn-export.patchbash-4.1-signal-sarestart.patchbash-cve-2016-9401.patch
bash-2.05b-manso.patchbash-4.1-env-inject.patchbash-4.1.tar.gzbash_history_syslog.patch
bash-2.05b-pgrp_sync.patchbash-4.1-examples.patchbash-4.1-trap.patchbash-infotags.patch
bash-2.05b-readline-oom.patchbash-4.1-extglob-man.patchbash-4.2-1207042-double-alloc.patchbash-requires.patch
bash-2.05b-xcc.patchbash-4.1-fd-leaks.patchbash-4.2-1240994-case-in-command-subst.patchbash-setlocale.patch
bash-3.2-audit.patchbash-4.1-here-strings.patchbash-4.2-1250070-ifs-in-temp-env.patchbash-sighup.patch
bash-3.2-ssh_source_bash.patchbash-4.1-history-hang.patchbash-4.2-1260568-bash-debugger.patchbash-tty-tests.patch
bash-4.0-nobits.patchbash-4.1-logout.patchbash-4.2-cve-2014-7169-0.patchdot-bash_logout
bash-4.1bash-4.1-loop-bracket-comsub.patchbash-4.2-cve-2014-7169-1.patchdot-bash_profile
bash41-001bash-4.1-manpage.patchbash-4.2-cve-2014-7169-2.patchdot-bashrc
bash41-002bash-4.1-manpage_trap.patchbash-4.2-param-subst-mem-leak.patch
bash41-016bash-4.1-mem-leaks.patchbash-4.3-cve-2016-0634.patch
bash41-017bash-4.1-noecho.patchbash-4.3-cve-2016-7543.patch
[root@repoSOURCES]#cd..
[root@reporpmbuild]#cdSPECS/
[root@repoSPECS]#ls
bash.spec
[root@repoSPECS]#vimbash.spec
#Otherpatches
Patch101:bash-2.02-security.patch
Patch102:bash-2.03-paths.patch
Patch103:bash-2.03-profile.patch
Patch104:bash-2.05a-interpreter.patch
Patch105:bash-2.05b-debuginfo.patch
Patch106:bash-2.05b-manso.patch
Patch107:bash-2.05b-pgrp_sync.patch
Patch108:bash-2.05b-readline-oom.patch
Patch109:bash-2.05b-xcc.patch
Patch110:bash-3.2-audit.patch
Patch112:bash-3.2-ssh_source_bash.patch
Patch113:bash-bashbug.patch
Patch115:bash-infotags.patch
Patch116:bash-requires.patch
Patch117:bash-setlocale.patch
Patch118:bash-tty-tests.patch
Patch119:bash_history_syslog.patch#增加的内容
......
#Otherpatches
%patch101-p1-b.security
%patch102-p1-b.paths
%patch103-p1-b.profile
%patch104-p1-b.interpreter
%patch105-p1-b.debuginfo
%patch106-p1-b.manso
%patch107-p1-b.pgrp_sync
%patch108-p1-b.readline_oom
%patch109-p1-b.xcc
%patch110-p1-b.audit
%patch112-p1-b.ssh_source_bash
%patch113-p1-b.bashbug
%patch115-p1-b.infotags
%patch116-p1-b.requires
%patch117-p1-b.setlocale
%patch118-p1-b.tty_tests
%patch119-p1-b.history_syslog#增加的内容
%patch123-p1-b.nobits
%patch124-p1-b.examples
%patch125-p1-b.bind_int_variable
%patch126-p1-b.broken_pipe
%patch127-p1-b.manpage
%patch128-p1-b.defer-sigchld-trap

wKiom1l22gvC7kQMAABNOgc8Mdc679.png

wKioL1l22kmw9zltAABe-F9bAvc799.png

[root@repo~]#yuminstalltexinfo#在另一窗口安装
[root@repoSPECS]#rpmbuild-babash.spec
+exit0
Processingfiles:bash-4.1.2-48.el6.x86_64
Provides:config(bash)=4.1.2-48.el6
Requires(interp):/bin/sh
Requires(rpmlib):rpmlib(BuiltinLuaScripts)<=4.2.2-1rpmlib(CompressedFileNames)<=3.0.4-1rpmlib(FileDigests)<=4.6.0-1rpmlib(PayloadFilesHavePrefix)<=4.0-1
Requires(post):ncurses-libs
Requires(postun):/bin/sh
Requires:/bin/shlibc.so.6()(64bit)libc.so.6(GLIBC_2.11)(64bit)libc.so.6(GLIBC_2.2.5)(64bit)libc.so.6(GLIBC_2.3)(64bit)libc.so.6(GLIBC_2.3.4)(64bit)libc.so.6(GLIBC_2.4)(64bit)libdl.so.2()(64bit)libdl.so.2(GLIBC_2.2.5)(64bit)libtinfo.so.5()(64bit)rtld(GNU_HASH)
Processingfiles:bash-doc-4.1.2-48.el6.x86_64
Requires(rpmlib):rpmlib(CompressedFileNames)<=3.0.4-1rpmlib(FileDigests)<=4.6.0-1rpmlib(PayloadFilesHavePrefix)<=4.0-1
Requires:/bin/bash/bin/sh
Processingfiles:bash-debuginfo-4.1.2-48.el6.x86_64
Checkingforunpackagedfile(s):/usr/lib/rpm/check-files/root/rpmbuild/BUILDROOT/bash-4.1.2-48.el6.x86_64
Wrote:/root/rpmbuild/SRPMS/bash-4.1.2-48.el6.src.rpm
Wrote:/root/rpmbuild/RPMS/x86_64/bash-4.1.2-48.el6.x86_64.rpm
Wrote:/root/rpmbuild/RPMS/x86_64/bash-doc-4.1.2-48.el6.x86_64.rpm
Wrote:/root/rpmbuild/RPMS/x86_64/bash-debuginfo-4.1.2-48.el6.x86_64.rpm
Executing(%clean):/bin/sh-e/var/tmp/rpm-tmp.0zbnT0
+umask022
+cd/root/rpmbuild/BUILD
+cdbash-4.1
+rm-rf/root/rpmbuild/BUILDROOT/bash-4.1.2-48.el6.x86_64
+exit0

wKiom1l22qWDCVWAAACP_ulqumo738.png

四、重新安装bash

[root@reporpmbuild]#cdRPMS
[root@repoRPMS]#ll
total4
drwxr--r--2rootroot4096Jul2513:08x86_64
[root@repoRPMS]#cdx86_64/
[root@repox86_64]#ll
total5128
-rw-r--r--1rootroot931232Jul2513:08bash-4.1.2-48.el6.x86_64.rpm
-rw-r--r--1rootroot1374956Jul2513:08bash-debuginfo-4.1.2-48.el6.x86_64.rpm
-rw-r--r--1rootroot2939332Jul2513:08bash-doc-4.1.2-48.el6.x86_64.rpm
[root@repox86_64]#rpm-Uvh--forcebash-4.1.2-48.el6.x86_64.rpm
Preparing...###########################################[100%]
1:bash###########################################[100%]

wKioL1l22yrQqRbDAAAz5-Lcwig207.png

wKiom1l22yuw9jiAAAAPwjEIXkU007.png


五、配置rsyslog日志服务

[root@repox86_64]#cat/etc/rsyslog.conf
local1.debug/var/log/bash_history.log

wKioL1l228WCYUPLAAAF520Llj8186.png

[root@repox86_64]#tail-f/var/log/bash_history.log
Jul2513:10:28repo-bash:HISTORY:PPID=29829PID=29831SID=29831UID=0User=rootcdx86_64/
Jul2513:10:30repo-bash:HISTORY:PPID=29829PID=29831SID=29831UID=0User=rootll
Jul2513:12:57repo-bash:HISTORY:PPID=29829PID=29831SID=29831UID=0User=rootbash--version
Jul2513:13:46repo-bash:HISTORY:PPID=29829PID=29831SID=29831UID=0User=rootrpm-Uvh--forcebash-4.1.2-48.el6.x86_64.rpm
Jul2513:13:49repo-bash:HISTORY:PPID=29829PID=29831SID=29831UID=0User=rootll
Jul2513:15:04repo-bash:HISTORY:PPID=29829PID=29831SID=29831UID=0User=rootcpbash-4.1.2-48.el6.x86_64.rpm/var/repo/other_x86_64/
Jul2513:15:17repo-bash:HISTORY:PPID=29829PID=29831SID=29831UID=0User=rootcat/etc/rsyslog.conf
Jul2513:15:33repo-bash:HISTORY:PPID=29829PID=29831SID=29831UID=0User=rootll/var/log/bash_history.log
Jul2513:15:48repo-bash:HISTORY:PPID=29829PID=29831SID=29831UID=0User=rootmore/var/log/bash_history.log
Jul2513:16:19repo-bash:HISTORY:PPID=29829PID=29831SID=29831UID=0User=roottail-f/var/log/bash_history.log
Jul2513:16:30repo-bash:HISTORY:PPID=5208PID=5210SID=5210UID=0User=rootll

wKiom1l23APTuqJsAABuK8qT88k814.png

版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 dio@foxmail.com 举报，一经查实，本站将立刻删除。

相关推荐

openwrt临时封禁ip
用的openwrt路由器，家里宽带申请了动态公网ip，为了方便把2280端口映射到公网，发现经常被暴力破解，自己写了个临时封禁ip功能的脚本，实现5分钟内同一个ip登录密码错误10次就封禁这个ip5分钟，并且进行邮件通知使用步骤openwrt为19.07.03版本，其他版本没有测试过安装bashmsmtpopkg
使用bash脚本并行运行多个程序
#!/bin/bashcommand1&command2&wait从Shell脚本并行运行多个程序–杨河老李(kviccn.github.io)
三步将Mac系统默认PHP版本切换为MAMP等扩展环境中的PHP版本
1.先查出MAMP下面集成的PHP版本cd/Applications/MAMP/bin/phpls-ls 2.编辑修改.bash_profile文件（没有.bash_profile文件的情况下回自动创建）sudovim~/.bash_profile在文件的最后输入以下信息，然后保存退出exportPATH="/Applications/MAMP/bin/php/php7.2.20/b
ubuntu16.04中文乱码问题解决
1、先输入locale-a，查看一下现在已安装的语言2、若不存在如zh_CN之类的语言包，进行中文语言包装:apt-getinstalllanguage-pack-zh-hans3、安装好后我们可以进行临时修改：然后添加中文支持: locale-genzh_CN.UTF-8临时修改> export LC_ALL='zh_CN.utf8'> locale永久
Bash Perl Tcl syntax diff
BashPerlTclsyntaxdiff1.进制数表示Languagebinaryoctalhexadecimalbash2#[0~1]0[0~7]0x[0~f]or0X[0~f]perl0b[0~1]0[0~7]0x[0~f]tcl0b[0~1]0o[0~7]0x[0~f]bashdifferentbaserepresntationreference2.StringlengthLanguageStr
k8s命令补全方法
正常安装了k8s后，使用kubect工具后接的命令不能直接tab补全命令补全方法：yum-yinstallbash-completionsource/usr/share/bash-completion/bash_completionsource<(kubectlcompletionbash)echo"source<(kubectlcompletionbash)">>~/.bashrc 
linux应用重启脚本
参考这里启动jar包shell脚本修改过来的#!/bin/bash#默认应用名称defaultAppName='./gadmin'appName=''if[[$1&&$1!=0]]thenappName=$1elseappName=$defaultAppNamefiecho">>>>>>本次重启的应用：$appName<
SHELL训练营--day19_shell练习36-40
#一个数字的行#!/bin/bashwhilereadlinedon=`echo$line|sed's/[^0-9]//g'|wc-L`if[$n-eq1]thenecho$linefidone<1.txt#日志切割归档#!/bin/bashcd/data/logslog=1.logmv_log(){[-f$1]&&mv$1$2
SHELL训练营--day23_shell练习56-60
#文件增加内容#!/bin/bashn=0cat1.txt|whilereadlinedon=[$n+1]if[$n-eq5]thenecho$lineecho-e"#Thisisatestfile.\n#Testinsertlineintothisfile."elseecho$linefidone#备份/etc目录#
linux 用户异常shell-》ksh
# su - oraclesu: /usr/bin/ksh: No such file or directory根据报错信息：显示无法找到文件 /usr/bin/ksh果然没有该文件，但是发现存在文件/bin/ksh,于是创建了一个软连接，可以规避问题，可以成功切换到用户下，但无法执行系统自带命令。$. .bash_profile-ksh: .: .b
Linux常用命令——history
history显示历史指令记录内容,下达历史纪录中的指令主要的使用方法如果你想禁用history，可以将HISTSIZE设置为0：#exportHISTSIZE=0使用HISTIGNORE忽略历史中的特定命令下面的例子，将忽略pwd、ls、ls-ltr等命令：#exportHISTIGNORE=”pwd:ls:ls-ltr:”使用HIS
bash基础特性及基础命令
一.命令历史  1.history环境变量：    HISTSIZE:输出的命令历史条数,如history的记录数    HISTFILESIZE:~/.bash_history保存的命令历史记录数    HISTFILLE:历史记录的文件路径    HISTCONTROL:     ignorespace:忽略以空格开头的命令
Linux下几种反弹Shell方法的总结与理解
之前在网上看到很多师傅们总结的linux反弹shell的一些方法，为了更熟练的去运用这些技术，于是自己花精力查了很多资料去理解这些命令的含义，将研究的成果记录在这里，所谓的反弹shell，指的是我们在自己的机器上开启监听，然后在被攻击者的机器上发送连接请求去连接我们的机器，将被攻击者的she
Bash命令行 bash &&gt; &gt;&
BashOne-LinersExplained,PartI:Workingwithfileshttps://catonmat.net/bash-one-liners-explained-part-oneBashOne-LinersExplained,PartII:Workingwithstringshttps://catonmat.net/bash-one-liners-explained-part-twoBashOne-LinersExplained,PartII
Shell基础知识三
Shell中变量的作用域：在当前Shell会话中使用，全局变量。在函数内部使用，局部变量。可以在其他Shell会话中使用，环境变量。局部变量：默认情况下函数内的变量也是全局变量#!/bin/bashfunctionfunc(){a=99}funcecho$a输出>>99为了让全局变量变成局部变量
Linux shell Bash的基本功能3 多命令与管道符
1、多命令顺序执行；  命令1；命令2  多个命令顺序执行，命令之间没有任何逻辑联系&&  命令1&&命令2  逻辑与，当命令1正确执行，才会执行命令2||  命令1||命令2  逻辑或，当命令1执行不正确，才会执行命令2例如：ls;date;cd/home/lsx;pwd;who ddif=输入文件of=输
Shebang(#!)[转]
原博文使用Linux或者unix系统的同学可能都对#!这个符号并不陌生，但是你真的了解它吗？首先，这个符号（#!）的名称，叫做"Shebang"或者"Sha-bang"。Linux执行文件时发现这个格式，会把！后的内容提取出来拼接在脚本文件或路径之前，当作实际执行的命令。 Shebang这个符号通常在Unix系统的脚本
Linux shell Bash的基本功能1
1、历史命令history[选项][历史命令保存文件]选项：-c：  清空历史命令-w：  把缓存中的历史命令写入历史命令保存文件 ~/.bash_historyvim/etc/profile中的Histsize可改存储历史命令数量历史命令的调用使用上、下箭头调用以前的历史命令使用“！n”重复执行第n条历史
Linux 变量的使用
目录1.Shell脚本规范2.Shell脚本执行3.Shell脚本变量3.1环境变量3.1.1自定义环境变量3.1.2显示与取消环境变量3.1.3环境变量初始化与对应文件的生效顺序3.2普通变量3.2.1定义本地变量3.2.2shell调用变量3.2.3grep调用变量3.2.4awk调用变量3.3
whoami,who,w命令详解
   http://www.voidcn.com/blog/wszzdanm/article/p-6145895.html命令功能：显示登录用户的信息命令格式：常用选项：举例：w显示已经登录的用户及正在进行的操作[root@localhost~]#w 11:22:01up4days,21:22, 3users, loadaverage:0.00,0.00,0.00USER  
pythonJavaScriptjavaHTMLPHPreactjsC#AndroidCSSNode.jssqlrpython-3.xMysqLjQueryc++pandasFlutterangularIOSdjangolinuxswifttypescript路由器JSON路由器设置无线路由器h3c华三华三路由器设置华三路由器电脑软件教程arraysdocker软件图文教程Cvue.jslaravelspring-boot