How do you read a file in expect script?
Create a . exp file, which will read from the *. txt file from the same directory and parse all the content in the text file into a string variable in the expect script. Loop the string, which contains a series of host names, and excecute a series of command until the string is enumerated.
Which command is used to read the contents of the a file?
cat command
The most basic and common usage of the cat command is to read the contents of files.
How do you use loop in Expect script?
Expect For Loop Examples: for {initialization} {conditions} {incrementation or decrementation} { } Expect for loop example : for {set i 1} {$i < $no} {incr i 1} { set $total [expr $total * $i ] } puts “$total”; Note: You should place the loop open brace in the same line as it contains “for” keyword.
How do you display the contents of a file in Linux terminal?
Linux And Unix Command To View File
- cat command.
- less command.
- more command.
- gnome-open command or xdg-open command (generic version) or kde-open command (kde version) – Linux gnome/kde desktop command to open any file.
- open command – OS X specific command to open any file.
How to read file contents into a variable?
Using the variable – just like any other environment variable – it is one, after all: if exist \\\\fileserver\\myappeleasedocs\\%Build%.doc Although it may well be that no UNC paths are allowed there.
How to read a file into a variable in shell?
In cross-platform, lowest-common-denominator sh you use: #!/bin/sh value=`cat config.txt` echo “$value” In bash or zsh, to read a whole file into a variable without invoking cat: #!/bin/bash value=$ (
How to read a command into a batch file?
Here’s the evolution: The /F flag to the FOR command says that it should open the file you pass in parentheses and set the loop variable to the contents of each line. The loop variable in the FOR command takes one percent sign if you are executing it directly from the command prompt, but two percent signs if you are executing it from a batch file.
How to read the output of a command?
There is no obvious way to read the output of a command. into a batch file variable. In unix-style shells, this is done via backquoting.