echo "The name of this script is \"$0\"." echo "The name of this script is \"`basename $0`\"." echo if [ -n "$1" ] # 测试变量被引用. then echo "Parameter #1 is $1" # 需要引用才能够转义"#" fi if [ -n "$2" ] then echo "Parameter #2 is $2" fi if [ -n "${...
# Usage: Create pdf files from input (wrapper script) # Author: Vivek Gite under GPL v2.x+ #——— #Input file _db="/tmp/wordpress/faq.txt" #Output location o="/var/www/prviate/pdf/faq" _writer="~/bin/py/pdfwriter.py" # If file exists if [[ -f "$_db" ]] then # read...
Bash, short for "Bourne Again SHell," is a powerful scripting language used in Unix-based operating systems. One of the fundamental constructs in Bash programming is the if statement. The if statement allows you to control the flow of your script based on specific conditions. In this article,...
The if in a Bash script is a shell keyword that is used to test conditions based on the exit status of a test command. An exit status of zero, and only zero, is a success, i.e. a condition that is true. Any other exit status is a failure, i.e. a condition that is false. ...
bash -c"echo 123"bash script.sh 上面这两种情况下,bash 运行完脚本,就退出了,不会出现 PROMPT,也不会等待用户输入新指令。 境变量$-里如果有字符i的话,代表是一个 interactive shell,否则是 non-interactive mode,我们可以简单测试一下: $>[[$-==*i*]]&&echo"Interactive"||echo"Not interactive"Interac...
[root@localhost ~]# bash ./script 2 3 //其中2 3 为位置参数表示脚本中的$1,$2 put two arg 5 [root@localhost ~]# 位置参数轮替: 格式:shift [n] //一次将n个参数踢出,可以不加n,表示默认一个 如: #!/bin/bash echo " firsh pos argus :$1,$3" ...
ifTEST;thenCMDfi TEST:条件判断,多数情况下可使用test命令来实现,返回值为0的话则执行CMD,否则就离开该条件结构体,脚本继续往下执行。 [root@c7-server ~]#cattest.sh#!/bin/bashifidzwl &> /dev/null;thenecho"User zwl exists."fi[root@c7-server ~]# bash test.shUser zwl exists. ...
## 请使用bash 运行本脚本(或者在其他shell中通过bash ./scriptName 来让bash 执行本文件) # test echo $0 echo $SHELL # pgrep bash # pgrep zsh # pgrep sh echo "current process id :$$" echo "grep the pid:" # ps ax|grep -E "^\s*$$";echo $?
Bash Script Check different shells cat /etc/shells # List of acceptable shells for chpass(1). # Ftpd will not allow users to connect who are not using # one of these shells. /bin/bash /bin/csh /bin/ksh /bin/sh /bin/tcsh /bin/zsh...
我正在尝试设置一个简单的bash脚本,以检查是否有错误消息出现在日志中,如果错误消息“重置适配器”出现在日志中,服务器应该发送电子邮件给我们。每当我运行下面的脚本时,我都会遇到"Bash Script.sh:第4行:语法错误:文件的意外结束“添加建议;在“那么”之 浏览0提问于2014-12-10得票数 1 ...