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Linux Centos7 升级最新版OpenSSH-9.6p1详细步骤（附脚本）_openssh 9.6升级

作者：IT小白 | 2024-02-16 06:22:57

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openssh 9.6升级

        最近公司系统在进行三级等保测评，其中有一项高危漏洞是Linux服务器的SSH版本太低存在安全风险，要求整改升级到最新版本，此篇文章记录SSH升级步骤和脚本。

鸣谢：本文参考文章，在该作者文章的所提供的脚本基础上进行修改而来：Linux OpenSSH-9.0p1最新版升级步骤详细（附脚本）_ssh升级脚本-CSDN博客

环境准备及软件下载相关步骤，请参考以上作者原文章，写的非常详细，这里只对一些优化和改进的地方进行记录。

编写脚本，该脚本在参考原文脚本的基础上修改（完整脚本，直接复制可用）

  1. #!/bin/bash
  2. #
  3. #########################################################
  4. # Function :openssh-9.6p1 update                        #
  5. # Platform :Centos7.X                                   #
  6. # Version  :2.0                                         #
  7. # Date     :2022-05-01                                  #     
  8. #########################################################
  9. clear
  10. export LANG="en_US.UTF-8"
  11. #修改1：此处的zlib原来的版本zlib-1.2提示下载失败，改完最新版本号可正常下载，
  12. #最新版本可在此地址查看：https://www.zlib.net/，截止本文修改日期最新版本为1.3.1
  13. #openssl和openssh下载不同的版本在此处修改版本号即可
  14. zlib_version="zlib-1.3.1"
  15. openssl_version="openssl-1.1.1q"
  16. openssh_version="openssh-9.6p1"
  17.  
  18. #安装包地址，这里存在一个问题，如果文件夹没有提前建好，后续执行脚本将报错
  19. file="/opt"
  20. #默认编译路径
  21. default="/usr/local"
  22. date_time=`date +%Y-%m-%d—%H:%M`
  23. #安装目录
  24. file_install="$file/openssh_install"
  25. file_backup="$file/openssh_backup"
  26. file_log="$file/openssh_log"
  27.  
  28. #修改2：为了解决文件夹不存在的问题，我这里添加了创建文件夹的脚本---start
  29. if [ ! -d "$file_install" ]; then
  30.   mkdir "$file_install"
  31. fi
  32.  
  33. if [ ! -d "$file_backup" ]; then
  34.   mkdir "$file_backup"
  35. fi
  36.  
  37. if [ ! -d "$file_log" ]; then
  38.   mkdir "$file_log"
  39. fi
  40.  
  41. if [ ! -d "$file_install/zlib" ]; then
  42.   mkdir "$file_install/zlib"
  43. fi
  44. #修改2：为了解决文件夹不存在的问题，我这里添加了创建文件夹的脚本---end
  45.  
  46. #源码包链接
  47. zlib_download="https://www.zlib.net/$zlib_version.tar.gz"
  48. openssl_download="https://www.openssl.org/source/$openssl_version.tar.gz"
  49. openssh_download="https://cdn.openbsd.org/pub/OpenBSD/OpenSSH/portable/$openssh_version.tar.gz"
  50. Install_make()
  51. {
  52. # Check if user is root
  53. 	if [ $(id -u) != "0" ]; then
  54. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  55. 		echo -e " 当前用户为普通用户，必须使用root用户运行，脚本退出中......" "\033[31m Error\033[0m"
  56. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  57. 	echo ""
  58. 	sleep 4
  59. 	exit
  60. 	fi
  61. #判断是否安装wget
  62. echo -e "\033[33m 正在安装Wget...... \033[0m"
  63. sleep 2
  64. echo ""
  65. 	if ! type wget >/dev/null 2>&1; then
  66. 		yum install -y wget
  67. 	else
  68. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  69. 		echo -e " wget已经安装了：" "\033[32m Please continue\033[0m"
  70. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  71. 	echo ""
  72. 	fi
  73. #判断是否安装tar
  74. echo -e "\033[33m 正在安装TAR...... \033[0m"
  75. sleep 2
  76. echo ""
  77. 	if ! type tar >/dev/null 2>&1; then
  78. 		yum install -y tar
  79. 	else
  80. 	echo ""
  81. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  82. 		echo -e " tar已经安装了：" "\033[32m Please continue\033[0m"
  83. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  84. 	fi
  85. 	echo ""
  86. #安装相关依赖包
  87. echo -e "\033[33m 正在安装依赖包...... \033[0m"
  88. sleep 3
  89. echo ""
  90. 	yum install gcc gcc-c++ glibc make autoconf openssl openssl-devel pcre-devel pam-devel zlib-devel tcp_wrappers-devel tcp_wrappers
  91. 	if [ $? -eq 0 ];then
  92. 	echo ""
  93. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  94.    		echo -e " 安装软件依赖包成功 " "\033[32m Success\033[0m"
  95. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  96. 	else
  97.    	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  98.    		echo -e " 解压源码包失败，脚本退出中......" "\033[31m Error\033[0m"
  99. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  100. 	sleep 4
  101. 	exit
  102. 	fi
  103. 	echo ""
  104. }
  105. Install_backup()
  106. {
  107. #创建文件（可修改）
  108. mkdir -p $file_install
  109. mkdir -p $file_backup
  110. mkdir -p $file_log
  111. mkdir -p $file_backup/zlib
  112. mkdir -p $file_backup/ssl
  113. mkdir -p $file_backup/ssh
  114. mkdir -p $file_log/zlib
  115. mkdir -p $file_log/ssl
  116. mkdir -p $file_log/ssh
  117. #备份文件（可修改）
  118. cp -rf /usr/bin/openssl  $file_backup/ssl/openssl_$date_time.bak > /dev/null
  119. cp -rf /etc/init.d/sshd  $file_backup/ssh/sshd_$date_time.bak > /dev/null
  120. cp -rf /etc/ssh  $file_backup/ssh/ssh_$date_time.bak > /dev/null
  121. cp -rf /usr/lib/systemd/system/sshd.service  $file_backup/ssh/sshd_$date_time.service.bak > /dev/null
  122. cp -rf /etc/pam.d/sshd.pam  $file_backup/ssh/sshd_$date_time.pam.bak > /dev/null
  123. }
  124. Remove_openssh()
  125. {
  126. ##并卸载原有的openssh（可修改）
  127. rpm -e --nodeps `rpm -qa | grep openssh`
  128. }
  129. Install_tar()
  130. {
  131. #下载的源码包，检查是否解压（可修改）
  132. #	if [ -e $file/$zlib_version.tar.gz ] && [ -e $file/$openssl_version.tar.gz ] && [ -e /$file/$openssh_version.tar.gz ];then
  133. #		echo -e " 下载软件源码包已存在  " "\033[32m  Please continue\033[0m"
  134. #	else
  135. #		echo -e "\033[33m 未发现本地源码包，链接检查获取中........... \033[0m "
  136. #	echo ""
  137. #	cd $file
  138. #	wget --no-check-certificate  $zlib_download
  139. #	wget --no-check-certificate  $openssl_download
  140. #	wget --no-check-certificate  $openssh_download
  141. #	echo ""
  142. #	fi
  143. #zlib
  144. echo -e "\033[33m 正在下载Zlib软件包...... \033[0m"
  145. sleep 3
  146. echo ""
  147. 	if [ -e $file/$zlib_version.tar.gz ] ;then
  148. 		echo -e " 下载软件源码包已存在  " "\033[32m  Please continue\033[0m"
  149. 	else
  150. 		echo -e "\033[33m 未发现zlib本地源码包，链接检查获取中........... \033[0m "
  151. 	sleep 1
  152. 	echo ""
  153. 	cd $file
  154. 	wget --no-check-certificate  $zlib_download
  155. 	echo ""
  156. 	fi
  157. #openssl
  158. echo -e "\033[33m 正在下载Openssl软件包...... \033[0m"
  159. sleep 3
  160. echo ""
  161. 	if  [ -e $file/$openssl_version.tar.gz ]  ;then
  162. 		echo -e " 下载软件源码包已存在  " "\033[32m  Please continue\033[0m"
  163. 	else
  164. 		echo -e "\033[33m 未发现openssl本地源码包，链接检查获取中........... \033[0m "
  165. 	echo ""
  166. 	sleep 1
  167. 	cd $file
  168. 	wget --no-check-certificate  $openssl_download
  169. 	echo ""
  170. 	fi
  171. #openssh
  172. echo -e "\033[33m 正在下载Openssh软件包...... \033[0m"
  173. sleep 3
  174. echo ""
  175. 	if [ -e /$file/$openssh_version.tar.gz ];then
  176. 		echo -e " 下载软件源码包已存在  " "\033[32m  Please continue\033[0m"
  177. 	else
  178. 		echo -e "\033[33m 未发现openssh本地源码包，链接检查获取中........... \033[0m "
  179. 	echo ""
  180. 	sleep 1
  181. 	cd $file
  182. 	wget --no-check-certificate  $openssh_download
  183. 	fi
  184. }
  185. echo ""
  186. echo ""
  187. #安装zlib
  188. Install_zlib(){
  189. echo -e "\033[33m 1.1-正在解压Zlib软件包...... \033[0m"
  190. sleep 3
  191. echo ""
  192.     cd $file && mkdir -p $file_install && tar -xzf zlib*.tar.gz -C $file_install > /dev/null
  193.     if [ -d $file_install/$zilb_version ];then
  194. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  195.               		echo -e "  zilb解压源码包成功" "\033[32m Success\033[0m"
  196. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  197. 	echo ""
  198.         	else
  199. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  200.               		echo -e "  zilb解压源码包失败，脚本退出中......" "\033[31m Error\033[0m"
  201. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  202.     echo ""
  203.     sleep 4
  204.     exit
  205.     fi
  206. echo -e "\033[33m 1.2-正在编译安装Zlib服务.............. \033[0m"
  207. sleep 3
  208. echo ""
  209.      #这里原脚本写法：cd $file_install/zlib*，我遇到了cd目录失败问题，将此处修改如下
  210.     cd $file_install/$zlib_version
  211. 	echo -e "$pwd"
  212. 	./configure --prefix=$default/$zlib_version > $file_log/zlib/zlib_configure_$date_time.txt  #> /dev/null 2>&1
  213. 	if [ $? -eq 0 ];then
  214. 	echo -e "\033[33m make... \033[0m"
  215. 		make > /dev/null 2>&1
  216. 	echo $?
  217. 	echo -e "\033[33m make test... \033[0m"
  218. 		make test > /dev/null 2>&1
  219. 	echo $?
  220. 	echo -e "\033[33m make install... \033[0m"
  221. 		make install > /dev/null 2>&1
  222. 	echo $?
  223. 	else
  224. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  225. 		echo -e "  编译安装压缩库失败，脚本退出中..." "\033[31m Error\033[0m"
  226. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  227. 	echo ""
  228. 	sleep 4
  229. 	exit
  230. 	fi
  231.  
  232. 	if [ -e $default/$zlib_version/lib/libz.so ];then
  233. 	sed -i '/zlib/'d /etc/ld.so.conf
  234. 	echo "$default/$zlib_version/lib" >> /etc/ld.so.conf
  235. 	echo "$default/$zlib_version/lib" >> /etc/ld.so.conf.d/zlib.conf
  236. 	ldconfig -v > $file_log/zlib/zlib_ldconfig_$date_time.txt > /dev/null 2>&1
  237. 	/sbin/ldconfig
  238. 	fi
  239. }
  240. echo ""
  241. echo ""
  242. Install_openssl(){
  243. echo -e "\033[33m 2.1-正在解压Openssl...... \033[0m"
  244. sleep 3
  245. echo ""
  246.     cd $file  &&  tar -xvzf openssl*.tar.gz -C $file_install > /dev/null
  247. 	if [ -d $file_install/$openssl_version ];then
  248. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  249.               		echo -e "  OpenSSL解压源码包成功" "\033[32m Success\033[0m"
  250. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  251.         	else
  252. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  253.               		echo -e "  OpenSSL解压源码包失败，脚本退出中......" "\033[31m Error\033[0m"
  254. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  255.     echo ""
  256.     sleep 4
  257.     exit
  258.     fi
  259. 	echo ""
  260. echo -e "\033[33m 2.2-正在编译安装Openssl服务...... \033[0m"
  261. sleep 3
  262. echo ""
  263. 	cd $file_install/$openssl_version
  264.         ./config shared zlib --prefix=$default/$openssl_version >  $file_log/ssl/ssl_config_$date_time.txt  #> /dev/null 2>&1
  265. 	if [ $? -eq 0 ];then
  266. 	echo -e "\033[33m make clean... \033[0m"
  267. 		make clean > /dev/null 2>&1
  268. 	echo $?
  269. 	echo -e "\033[33m make -j 4... \033[0m"
  270. 		make -j 4 > /dev/null 2>&1
  271. 	echo $?
  272. 	echo -e "\033[33m make install... \033[0m"
  273. 		make install > /dev/null 2>&1
  274. 	echo $?
  275. 	else
  276. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  277. 		echo -e "  编译安装OpenSSL失败，脚本退出中..." "\033[31m Error\033[0m"
  278. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  279. 	echo ""
  280. 	sleep 4
  281. 	exit
  282. 	fi
  283. 	mv /usr/bin/openssl /usr/bin/openssl_$date_time.bak    #先备份
  284. 	if [ -e $default/$openssl_version/bin/openssl ];then
  285. 	sed -i '/openssl/'d /etc/ld.so.conf
  286. 	echo "$default/$openssl_version/lib" >> /etc/ld.so.conf
  287. 	ln -s $default/$openssl_version/bin/openssl /usr/bin/openssl
  288. 	ln -s $default/$openssl_version/lib/libssl.so.1.1 /usr/lib64/libssl.so.1.1 
  289. 	ln -s $default/$openssl_version/lib/libcrypto.so.1.1 /usr/lib64/libcrypto.so.1.1 
  290. 	ldconfig -v > $file_log/ssl/ssl_ldconfig_$date_time.txt > /dev/null 2>&1
  291. 	/sbin/ldconfig
  292. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  293. 		echo -e " 编译安装OpenSSL " "\033[32m Success\033[0m"
  294. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  295. 	echo ""
  296. echo -e "\033[33m 2.3-正在输出 OpenSSL 版本状态.............. \033[0m"
  297. sleep 3
  298. echo ""
  299. 	echo -e "\033[32m====================== OpenSSL veriosn =====================  \033[0m"
  300. 	echo ""
  301. 		openssl version -a
  302. 	echo ""
  303. 	echo -e "\033[32m=======================================================  \033[0m"
  304. 	sleep 2
  305. 	else
  306. 	echo ""
  307. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  308. 		echo -e " OpenSSL软连接失败，脚本退出中..." "\033[31m  Error\033[0m"
  309. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  310. 	fi
  311. }
  312. echo ""
  313. echo ""
  314. Install_openssh(){
  315. echo -e "\033[33m 3.1-正在解压OpenSSH...... \033[0m"
  316. sleep 3
  317. echo ""
  318. 	cd $file && tar -xvzf openssh*.tar.gz -C $file_install > /dev/null
  319. 	if [ -d $file_install/$openssh_version ];then
  320. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  321.          echo -e "  OpenSSh解压源码包成功" "\033[32m Success\033[0m"
  322. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  323.         	else
  324. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  325.          echo -e "  OpenSSh解压源码包失败，脚本退出中......" "\033[31m Error\033[0m"
  326. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  327.     echo ""
  328.     sleep 4
  329.     exit
  330.     fi
  331. 	echo ""
  332. echo -e "\033[33m 3.2-正在编译安装OpenSSH服务...... \033[0m"
  333. sleep 3
  334. echo ""
  335. 	mv /etc/ssh /etc/ssh_$date_time.bak     #先备份
  336. 	cd $file_install/$openssh_version
  337. 	./configure --prefix=$default/$openssh_version --sysconfdir=/etc/ssh --with-ssl-dir=$default/$openssl_version --with-zlib=$default/$zlib_version >  $file_log/ssh/ssh_configure_$date_time.txt   #> /dev/null 2>&1
  338. 	if [ $? -eq 0 ];then
  339. 	echo -e "\033[33m make -j 4... \033[0m"
  340. 		make -j 4 > /dev/null 2>&1
  341. 	echo $?
  342. 	echo -e "\033[33m make install... \033[0m"
  343. 		make install > /dev/null 2>&1
  344. 	echo $?
  345. 	else
  346. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  347. 		echo -e " 编译安装OpenSSH失败，脚本退出中......" "\033[31m Error\033[0m"
  348. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  349. 	echo ""
  350. 	sleep 4
  351. 	exit
  352. 	fi
  353. 	echo ""
  354. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  355. 		echo -e " 编译安装OpenSSH " "\033[32m Success\033[0m"
  356. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  357. 	echo ""
  358. 	sleep 2
  359. 	echo -e "\033[32m==================== OpenSSH—file veriosn =================== \033[0m"
  360. 	echo ""
  361. 		/usr/local/$openssh_version/bin/ssh -V
  362. 	echo ""
  363. 	echo -e "\033[32m======================================================= \033[0m"
  364. 	sleep 3
  365. 	echo ""
  366. echo -e "\033[33m 3.3-正在迁移OpenSSH配置文件...... \033[0m"
  367. sleep 3
  368. echo ""
  369. #迁移sshd
  370. 	if [ -f  "/etc/init.d/sshd" ];then
  371. 		mv /etc/init.d/sshd /etc/init.d/sshd_$date_time.bak
  372. 	else
  373. 		echo -e " /etc/init.d/sshd不存在 " "\033[31m Not backed up(可忽略)\033[0m"
  374. 	fi
  375. 	cp -rf $file_install/$openssh_version/contrib/redhat/sshd.init /etc/init.d/sshd;
  376. 	chmod u+x /etc/init.d/sshd;
  377. 	chkconfig --add sshd      ##自启动
  378. 	chkconfig --list |grep sshd;
  379. 	chkconfig sshd on
  380. #备份启动脚本,不一定有
  381. 	if [ -f  "/usr/lib/systemd/system/sshd.service" ];then
  382. 		mv /usr/lib/systemd/system/sshd.service /usr/lib/systemd/system/sshd.service_bak
  383. 	else
  384. 		echo -e " sshd.service不存在" "\033[31m Not backed up(可忽略)\033[0m"
  385. 	fi
  386. #备份复制sshd.pam文件
  387. 	if [ -f "/etc/pam.d/sshd.pam" ];then
  388. 		mv /etc/pam.d/sshd.pam /etc/pam.d/sshd.pam_$date_time.bak 
  389. 	else
  390.         echo -e " sshd.pam不存在" "\033[31m Not backed up(可忽略)\033[0m"
  391. 	fi
  392. 	cp -rf $file_install/$openssh_version/contrib/redhat/sshd.pam /etc/pam.d/sshd.pam
  393. #迁移ssh_config	
  394. 	cp -rf $file_install/$openssh_version/sshd_config /etc/ssh/sshd_config
  395. 	sed -i 's/Subsystem/#Subsystem/g' /etc/ssh/sshd_config
  396. 	echo "Subsystem sftp $default/$openssh_version/libexec/sftp-server" >> /etc/ssh/sshd_config
  397. 	cp -rf $default/$openssh_version/sbin/sshd /usr/sbin/sshd
  398. 	cp -rf /$default/$openssh_version/bin/ssh /usr/bin/ssh
  399. 	cp -rf $default/$openssh_version/bin/ssh-keygen /usr/bin/ssh-keygen
  400. 	sed -i 's/#PasswordAuthentication\ yes/PasswordAuthentication\ yes/g' /etc/ssh/sshd_config
  401. 	#grep -v "[[:space:]]*#" /etc/ssh/sshd_config  |grep "PubkeyAuthentication yes"
  402. 	echo 'PermitRootLogin yes' >> /etc/ssh/sshd_config
  403. #重启sshd
  404. 	service sshd start > /dev/null 2>&1
  405. 	if [ $? -eq 0 ];then
  406. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  407. 		echo -e " 启动OpenSSH服务成功" "\033[32m Success\033[0m"
  408. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  409. 	echo ""
  410. 	sleep 2
  411. 	#删除源码包（可修改）
  412. 	rm -rf $file/*$zlib_version.tar.gz
  413. 	rm -rf $file/*$openssl_version.tar.gz
  414. 	rm -rf $file/*$openssh_version.tar.gz
  415. 	#rm -rf $file_install
  416. echo -e "\033[33m 3.4-正在输出 OpenSSH 版本...... \033[0m"
  417. sleep 3
  418. echo ""
  419. 	echo -e "\033[32m==================== OpenSSH veriosn =================== \033[0m"
  420. 	echo ""
  421. 		ssh -V
  422. 	echo ""
  423. 	echo -e "\033[32m======================================================== \033[0m"
  424. 	else
  425. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  426. 		echo -e " 启动OpenSSH服务失败，脚本退出中......" "\033[31m Error\033[0m"
  427. 	echo -e "\033[33m--------------------------------------------------------------- \033[0m"
  428. 	sleep 4
  429. 	exit
  430. 	fi
  431. 	echo ""
  432. }
  433. End_install()
  434. {
  435. ##sshd状态
  436. 	echo ""
  437. 	echo -e "\033[33m 输出sshd服务状态： \033[33m"
  438. 	sleep 2
  439. 	echo ""
  440. 	systemctl status sshd.service
  441. 	echo ""
  442. 	echo ""
  443. 	echo ""
  444. 	sleep 1
  445. echo -e "\033[33m==================== OpenSSH file =================== \033[0m"
  446. echo ""
  447. 	echo -e " Openssh升级安装目录请前往:  "
  448. 	cd  $file_install && pwd
  449. 	cd ~
  450. 	echo ""
  451. 	echo -e " Openssh升级备份目录请前往:  " 
  452. 	cd  $file_backup && pwd
  453. 	cd ~
  454. 	echo ""
  455. 	echo -e " Openssh升级日志目录请前往:  "
  456. 	cd  $file_log && pwd
  457. 	cd ~
  458. 	echo ""
  459. echo -e "\033[33m======================================================= \033[0m"
  460. }
  461. Install_make
  462. Install_backup
  463. Remove_openssh
  464. Install_tar
  465. Install_zlib
  466. Install_openssl
  467. Install_openssh
  468. End_install

  • 上传脚本到Linux并转换sh脚本文件格式

 windows电脑环境编辑的脚本文件上传到Linux环境可能会遇到的问题

  1. [root@localhost soft]# sh sshupdate.sh 
  2. sshupdate.sh: line 120: syntax error near unexpected token `$'\r''
  3. [root@localhost soft]#

原因分析：报错原因是因为脚本window操作系统和Linux操作系统换行符的编码不一样

解决办法：脚本在执行前需使用dos2unix命令转换文件格式

具体步骤：

  1. #dos2unix命令安装：
  2.  
  3. yum -y install dos2unix
  4.  
  5. #转换文件格式，sshupdate.sh是你要转换的sh脚本，根据个人文件名称修改：
  6. dos2unix sshupdate.sh 
  7. dos2unix: converting file sshupdate.sh to Unix format ...

  • 执行脚本，等待完成

sh ./sshupdate.sh

  • 测试验证

  1. 查看SSH版本
  2. ssh -V

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