# A small example program for using the new getopt(1) program. # This program will only work with bash(1) # An similar program using the tcsh(1) script language can be found # as parse.tcsh # Example input and output (from the bash prompt): # ./parse.bash -a par1 'another arg...
/bin/bashread-p"Plz input a username: "userNameifid$userName&>/dev/null;thenecho"The shell of$userNameis`grep"^$userName\>"/etc/passwd|cut-d:-f7`."elseecho"No such user. stupid."fi 1. 2. 3. 4. 5. 6. 7. 8. bash编程:逻辑运算 &&(与): condition1 && condition2 == [conditio...
dd [if=INPUTFILE] [of=OUTPUTFILE] [bs=BLOCKSIZE] [count=COUNT] bs:块大小,默认为512字节(一个扇区的大小)。可使用K/M/G格式。 count:块数量。 if:输入文件,可以为设备。 of:输出文件,可以为设备。 file 查看文件类型。 file FILENAME ln 创建连接文件。 ln [-fs] SRC DST -f:强制创建。 -s:...
/bin/bash# 使用-p选项提供自定义提示信息read-p"请输入您的邮箱地址:"user_emailecho"您输入的邮箱地址是:$user_email" 在这个例子中,-p选项后面的字符串将显示在用户输入之前,并且用户输入的内容将被赋值给user_email变量。运行脚本: bash prompt_example.sh 用户将看到自定义的提示信息,然后输入邮箱地址,最终...
/bin/bash #Here we are asking a question to prompt the user for standard input. i.e.keyboard echo 'Please enter your name.' #Here we are reading the standard input and assigning it to the variable name with the read command. read name...
1000+ DevOps Bash Scripts - AWS, GCP, Kubernetes, Docker, CI/CD, APIs, SQL, PostgreSQL, MySQL, Hive, Impala, Kafka, Hadoop, Jenkins, GitHub, GitLab, BitBucket, Azure DevOps, TeamCity, Spotify, MP3, LDAP, Code/Build Linting, pkg mgmt for Linux, Mac, Pytho
将显示消息”The mail in mailfile has been read” no_empty_cmd_completion off nocaseglob off #如果设置,当执行文件名扩展时,bash在不区分大小写的方式下匹配文件名 nocasematch off nullglob off #如果设置,bash允许没有匹配任何文件的文件名模式扩展成一个空串,而不是他们本身 progcomp on promptvars on...
# make less more friendly for non-text input files, see lesspipe(1) [ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)" # set variable identifying the chroot you work in (used in the prompt below) if [ -z "${debian_chroot:-}" ] && [ -r /etc/debian_chroot ]; ...
exportPROMPT_COMMAND="history -a"### jiagu history xianshi ### 3)source /etc/profile让配置生效 生成效果: 1 2018-07-10 19:45:39 192.168.204.1 root source /etc/profile 3、历史操作命令的清除:history -c 但此命令并不会清除保存在文件中的记录,因此需要手动删除.bash_profile文件中的记录。
BASH ScriptsScripts are either called as part of an automated process (with no human intervention) or run interactively, with a user responding to prompts. As long as you have executable permission for a file, you can run it from the command line by typing its name. If you do not have ...