AI代码解释 +alias ‘rm=rm-i’+alias ‘cp=cp-i’+alias ‘mv=mv-i’+‘[‘-f/etc/bashrc ‘]’+./etc/bashrc+++id-gn+++id-un+++id-u++‘[‘ root=root-a0-gt99‘]’++umask022++‘[‘ ‘’‘]’+declare-iTOTAL=0+‘[‘0-eq0‘]’+printf ‘%s/n’ ‘0is zero’0is zero 前面...
## Place the IP address into the positional parameters; ## after word splitting each element becomes a parameter set -- $1 [ $# -eq 4 ] && ## must be four parameters ## each must be less than 256 ## A default of 666 (which is invalid) is used if a parameter is empty ## Al...
/bin/bash 这一行表明,不管用户选择的是那种交互式shell,该脚本需要使用bash shell来运行。由于每种shell的语法大不相同,所以这句非常重要。 简单实例 下面是一个非常简单的shell脚本。它只是运行了几条简单的命令 1 2 3 4 #!/bin/bash echo"hello, $USER. I wish to list some files of yours" echo"lis...
Alias the stuff you use frequently — eg netstatx If you run a command with the same arguments nearly all the time, create a “shortcut” alias for this — I have many of them. I often use the x syntax — ie, the command’s normal name followed by an x. For example, with netsta...
alias Used to define an alias for a specific command. bg Run a job in background mode. bind Used to bind a keyboard sequence. break Used to exit from a running loop in script. cd Change the directory to another directory. command Run a specific command without the normal shell lookup. ...
$ alias Check List of Defined Linux Aliases User-levelaliases can be defined either in the.bashrcfile or the.bash_aliasesfile. The.bash_aliasesfile is to group all your aliases into a separate file instead of putting it in the.bashrcfile along with other parameters. Initially,.bash_aliaseswi...
The exit status of a function definition is zero (success) unless another read-only function with a similar name already exists or a syntax error occurs. How to define and use functions in Bash? You can define functions in your .bashrc file with your other bash alias. In a shell script,...
Command=`which $Command|grep -v "^alias"|grep -o "[^[:space:]]*"` [ $DebugLevel -eq 1 ] && echo $Command ComDir=${Command%/*} [ $DebugLevel -eq 1 ] && echo $ComDir [ -d $Target$Command ] || mkdir -p $Target$ComDir ...
五、命令别名(alias) # 设置别名aliasname='command [option] [argument]'# 取消指定的别名设置unaliasname# 列出设置的别名alias# 转义别名aliasrm='rm -i'\rm# 转义别名而使用原始的命令[root@localhost ~]# rm tmp.txtrm: remove regularfile`tmp.txt'? n[root@localhost ~]# \rm tmp.txt # \rm,使...
Bash aliases are essentially shortcuts that can save you from having to remember long commands and eliminate a great deal of typing when you are working on the command line.