设定shell variable 执行格式:set var value Example: %set termvt100 设定 shell variable “term” 为 VT100 终端机之型式。 删除shell variable 执行格式:unset var Example: %unset PRINTER 删除 shell variable “PRINTER” 之设定值。 environment variable 查看environment variable 之设定值 执行格式:setenv ...
.设定environment variable 执行格式:setenv NAME word Example: %setenv PRINTER sp1 设定environment variable "PRINTER"列表机名称为sp1。 .删除environment variable 执行格式:unsetenv NAME Example: %unsetenv PRINTER 删除environment variable "PRINTER"列表机名称之设定值。
执行格式:unset var Example: %unset PRINTER 删除shell variable "PRINTER" 之设定值。 8. environment variable 8.1 查看 environment variable 之设定值 执行格式:setenv 查看所有 environment variable 之设定值。 Example: %setenv 执行格式:echo $NAME 显示指定的 environment variable "NAME" 之设定值。 Example...
would expand the PATH environment variable, substituting each occurrenceof "str1" in the expanded result with "str2". "str2" can be the emptystring to effectively delete all occurrences of "str1" from the expandedoutput. "str1" can begin with an asterisk, in which case it will matchevery...
global = 0; } return 1; } char ** VLtable2environ() /* * build an array of pointers suitable for making a new environment * note: you need to free() this when done to avoid memory leaks */ { int i, j, n = 0; char **envtab; // first, count the number of global ...
sh #!/bin/bash # set environment variable if [ -f ~/.bashrc ]; then . ~/.bashrc fi export ORACLE_SID=CNMMBO sqlplus -S /nolog @/users/oracle/dept.sql #注意此处执行sql脚本的方法 -S 表示以静默方式执行 exit #授予脚本执行权限 oracle@SZDB:~> chmod 775 get_dept.sh -->执行shell脚本...
Source code will be kept in a parallel directory tree~/.rbenv/sourceswhen using--keepwith therbenv installcommand. You should specify the location of the source code with theRUBY_BUILD_BUILD_PATHenvironment variable when using--keepwithruby-build. ...
That environment variable contains a list of contexts (in this case directories) in which to perform a multiple lookup for the thing named “cc”. Assuming the lookup is successful, the shell launches the program, calling it with the argument “x.c”. The first thing the compiler does is ...
There are usually no issues in porting calls to environment variable functions to Interix. However, when porting System V Interface Definition (SVID) code, instead of the process environment being defined as a third argument to main(), it is defined as extern char **environ. To modify the ...
[hubo@test15169x ~]$ printenv print environment VARIABLE HOSTNAME=test15169x.ops.corp.qihoo.net TERM=xterm变量是一个用来存储数据的实体 SHELL=/bin/bash 5、Unix shell中有两种变量shell变量和环境变量,变量是一个用来存储数据的实体。 每个变量都有一个名称和一个值。其中变量名是用来引用变量的标识符...