Some shell script examples
WebApr 9, 2024 · It involves writing a series of shell commands in a specific language (such as Bash, Zsh, or Fish) and executing them one by one in the terminal or other shell environments. file management, system backups, software installation, and debugging are some examples we use scripting. You can write scripts to compress videos, rearrange … WebMar 1, 2011 · If the server is well configured, eg it has an up and running MTA, you can just use the mail command. For instance, to send the content of a file, you can do this: $ cat /path/to/file mail -s "your subject" [email protected]. man mail for more details. Share. edited May 13, 2015 at 22:40.
Some shell script examples
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WebBuy this Shell Scripting Tutorial as a PDF for only $5. 1. Introduction Purpose Of This Tutorial. This tutorial is written to help people understand some of the basics of shell script programming (aka shell scripting), and hopefully to introduce some of the possibilities of simple but powerful programming available under the Bourne shell.As such, it has been … WebAug 3, 2024 · The modulus operator divides a number with a divisor and returns the remainder. As we know all even numbers are a multiple of 2, we can use the following shell script to check for us whether a number is even or odd. #!/bin/bash n=10 if [ $ ( (n%2))==0 ] then echo "The number is even." else echo "The number is odd." fi.
WebSep 10, 2011 · If the file that this script lives in is executable, the hash-bang ( #!) tells the operating system what interpreter to use to run the script. In this case it's /bin/sh, for example. There's a Wikipedia article about it for more information. The first line tells the shell that if you execute the script directly (./run.sh; as opposed to /bin/sh ... WebSep 10, 2012 · Otherwise, the next time you run the script, you will copy files even if they have not changed. With the answers provided, use the mv command instead of cp . If the two directories are on different file systems (meaning you cannot use mv ), add a rm command to remove the source file after the copy.
WebApr 9, 2024 · It involves writing a series of shell commands in a specific language (such as Bash, Zsh, or Fish) and executing them one by one in the terminal or other shell … WebJul 28, 2024 · Let’s cover some examples of how each of these PowerShell cmdlets works. New-Item – Creates new registry keys. New-ItemProperty – Creates new registry values. …
WebApr 3, 2024 · Executing shell commands with bash. The best way to execute a separate shell command inside of a Bash script is by creating a new subshell through the $( ) syntax. Check the example below where we echo the result of running the uname -o command. #!/bin/bash # use a subshell $() to execute shell command echo $(uname -o) # executing …
WebAug 3, 2024 · The modulus operator divides a number with a divisor and returns the remainder. As we know all even numbers are a multiple of 2, we can use the following … biopsy of external ear codeWebJun 29, 2024 · script2.sh. This script is launched by the current shell and passed to the cat command. The cat command “runs” the script. Writing your shebangs like this makes an assumption that you know where the shell or other interpreter is located on the target … dairy diary farmsourceWebJul 5, 2024 · What Is Shell Scripting? Being a Linux user means you play around with the command-line. Like it or not, there are just some things that are done much more easily … dairy digesters to capture methaneWebJan 22, 2013 · I am trying to make a shell script which is designed to be run like this: ... Note: usage() is some function showing the syntax. For example: function usage { cat << EOF Usage: script.sh -t Performs some activity EOF exit … dairy dip belle chasse menuWebAug 27, 2024 · For example, you can write scripts to automate daily, time-consuming tasks, and even quickly commit and push code to a Git repository with just a few simple commands. In this post, we’ll look at the Bash Shell ( B ourne A gain SH ell), which is a command-line interface (CLI) and is currently the most widely used shell. dairy dip new salisbury inWebIn computing, a shebang is the character sequence consisting of the characters number sign and exclamation mark (#!) at the beginning of a script.It is also called sharp-exclamation, sha-bang, hashbang, pound-bang, or hash-pling.. When a text file with a shebang is used as if it is an executable in a Unix-like operating system, the program loader mechanism parses … biopsy of disc spaceWebEdit: I realised that my answer above is incomplete. There are two uses of exec in shells like ksh and bash - used for opening file descriptors. Here are some examples: exec 3< thisfile # open "thisfile" for reading on file descriptor 3 exec 4> thatfile # open "thatfile" for writing on file descriptor 4 exec 8<> tother # open "tother" for ... biopsy of hiatal hernia