Easiest way to write scripts - maybe similar to DOS batch files
Hi all,
I realize that this is probably the oldest and most answered question here and I apologize.
I did search through the forums for this topic but what I was finding was mainly people wanting help with a script that needed tweaking, wouldn't work right, etc. without much explanation of the scripting type (is scripting language the proper term?).
Some of the examples I was seeing looked harder than C++, of which I have zero knowledge except seeing the code here and there in source files and such.
I had Java and Visual Basic programming in college (quite a while back now) so I'm familiar with at least a little scripting/programming. I used to be pretty handy with DOS batch files back in the day.
So, for a beginner, what do I need to familiarize myself with as far as scripting in Linux?
I know the purpose for which I intend to use it is key, so I'll say that it's basically to automate monotonous tasks which would usually require several commands to accomplish.
For example, to read the contents of a log file, re-direct it (append) to an existing file on the desktop or certain /home folder, and e-mail a copy to an email address, and finally change the timestamp on the log file and note in the appended file that the timestamp was indeed updated.
That's a silly convoluted example but it's pretty similar to some of the scripts I've seen.
Like I noted originally, it would be nice to keep it pretty simple such as a DOS batch file.
Here is an example of a script that is quite a bit too complex for me at this time without studying it more:
#!/bin/bash
# Simple CGI script
echo Content-type: text/plain
echo ""
LOG_FILE=/var/www/stat/local.log
# Show NUM lines
if [ -n "$QUERY_STRING" ]; then
NUM=$QUERY_STRING
else
if [ -n "$1" ]; then
NUM=$1
else
NUM=10
fi
fi
echo "Current statistic:"
tail -n $NUM "$LOG_FILE" | sort -r
#-----------------------------------------
Even though I've used IF THEN and IF ELSE, etc. statements in Visual Basic (Visual Studio now, I believe) I'm pretty rusty on it.
Sorry for the TL;DR post but I appreciate any advice some person smarter than me can give
Thank you in advance.
.
Categories
- All Categories
- 229 LFX Mentorship
- 229 LFX Mentorship: Linux Kernel
- 810 Linux Foundation IT Professional Programs
- 363 Cloud Engineer IT Professional Program
- 183 Advanced Cloud Engineer IT Professional Program
- 82 DevOps Engineer IT Professional Program
- 151 Cloud Native Developer IT Professional Program
- 138 Express Training Courses & Microlearning
- 138 Express Courses - Discussion Forum
- Microlearning - Discussion Forum
- 6.3K Training Courses
- 48 LFC110 Class Forum - Discontinued
- 71 LFC131 Class Forum
- 44 LFD102 Class Forum
- 228 LFD103 Class Forum
- 19 LFD110 Class Forum
- 42 LFD121 Class Forum
- 18 LFD133 Class Forum
- 8 LFD134 Class Forum
- 18 LFD137 Class Forum
- 71 LFD201 Class Forum
- 5 LFD210 Class Forum
- 5 LFD210-CN Class Forum
- 2 LFD213 Class Forum - Discontinued
- 128 LFD232 Class Forum - Discontinued
- 2 LFD233 Class Forum
- 4 LFD237 Class Forum
- 24 LFD254 Class Forum
- 701 LFD259 Class Forum
- 111 LFD272 Class Forum - Discontinued
- 4 LFD272-JP クラス フォーラム
- 13 LFD273 Class Forum
- 179 LFS101 Class Forum
- 1 LFS111 Class Forum
- 3 LFS112 Class Forum
- 3 LFS116 Class Forum
- 7 LFS118 Class Forum
- LFS120 Class Forum
- 9 LFS142 Class Forum
- 8 LFS144 Class Forum
- 4 LFS145 Class Forum
- 3 LFS146 Class Forum
- 2 LFS148 Class Forum
- 15 LFS151 Class Forum
- 4 LFS157 Class Forum
- 44 LFS158 Class Forum
- LFS158-JP クラス フォーラム
- 10 LFS162 Class Forum
- 2 LFS166 Class Forum
- 4 LFS167 Class Forum
- 3 LFS170 Class Forum
- 2 LFS171 Class Forum
- 3 LFS178 Class Forum
- 3 LFS180 Class Forum
- 2 LFS182 Class Forum
- 5 LFS183 Class Forum
- 32 LFS200 Class Forum
- 737 LFS201 Class Forum - Discontinued
- 3 LFS201-JP クラス フォーラム - Discontinued
- 19 LFS203 Class Forum
- 135 LFS207 Class Forum
- 2 LFS207-DE-Klassenforum
- 1 LFS207-JP クラス フォーラム
- 302 LFS211 Class Forum
- 56 LFS216 Class Forum
- 52 LFS241 Class Forum
- 48 LFS242 Class Forum
- 38 LFS243 Class Forum
- 15 LFS244 Class Forum
- 5 LFS245 Class Forum
- LFS246 Class Forum
- LFS248 Class Forum
- 52 LFS250 Class Forum
- 2 LFS250-JP クラス フォーラム
- 1 LFS251 Class Forum
- 156 LFS253 Class Forum
- 1 LFS254 Class Forum
- 1 LFS255 Class Forum
- 9 LFS256 Class Forum
- 1 LFS257 Class Forum
- 1.3K LFS258 Class Forum
- 10 LFS258-JP クラス フォーラム
- 129 LFS260 Class Forum
- 160 LFS261 Class Forum
- 43 LFS262 Class Forum
- 82 LFS263 Class Forum - Discontinued
- 15 LFS264 Class Forum - Discontinued
- 11 LFS266 Class Forum - Discontinued
- 24 LFS267 Class Forum
- 25 LFS268 Class Forum
- 32 LFS269 Class Forum
- 6 LFS270 Class Forum
- 202 LFS272 Class Forum - Discontinued
- 2 LFS272-JP クラス フォーラム
- 4 LFS147 Class Forum
- 1 LFS274 Class Forum
- 4 LFS281 Class Forum
- 12 LFW111 Class Forum
- 262 LFW211 Class Forum
- 184 LFW212 Class Forum
- 15 SKF100 Class Forum
- 1 SKF200 Class Forum
- 1 SKF201 Class Forum
- 797 Hardware
- 199 Drivers
- 68 I/O Devices
- 37 Monitors
- 104 Multimedia
- 174 Networking
- 91 Printers & Scanners
- 85 Storage
- 759 Linux Distributions
- 82 Debian
- 67 Fedora
- 17 Linux Mint
- 13 Mageia
- 23 openSUSE
- 148 Red Hat Enterprise
- 31 Slackware
- 13 SUSE Enterprise
- 354 Ubuntu
- 470 Linux System Administration
- 39 Cloud Computing
- 71 Command Line/Scripting
- Github systems admin projects
- 95 Linux Security
- 78 Network Management
- 102 System Management
- 47 Web Management
- 69 Mobile Computing
- 18 Android
- 38 Development
- 1.2K New to Linux
- 1K Getting Started with Linux
- 374 Off Topic
- 115 Introductions
- 174 Small Talk
- 24 Study Material
- 807 Programming and Development
- 304 Kernel Development
- 485 Software Development
- 1.8K Software
- 263 Applications
- 183 Command Line
- 3 Compiling/Installing
- 987 Games
- 317 Installation
- 102 All In Program
- 102 All In Forum
Upcoming Training
-
August 20, 2018
Kubernetes Administration (LFS458)
-
August 20, 2018
Linux System Administration (LFS301)
-
August 27, 2018
Open Source Virtualization (LFS462)
-
August 27, 2018
Linux Kernel Debugging and Security (LFD440)