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114 lines
3.4 KiB
Markdown
114 lines
3.4 KiB
Markdown
# shell-scripting-tutorial
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A complete begineers guide to learn shell scripting from scratch which includes Videos, Practice scenarios and project idea. I will create one file for one topic with code.
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Before jumping into the Shell scripting below are commands you have to practice for better understanding and familiar with Linux command line interface.
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If you do not learn below commands also fine but i personally recommend you to learn commands first.
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[103 Linux Commands Video Tutorial](https://www.youtube.com/watch?v=VG-MMju9RhQ&list=PLHyfPDPl-JDX_dfDEpsvglu4x3h1RjPkz)
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alias and unalias, arch, arp, at, awk, bc, blkid, cal, cat, cd, chage, chattr, chgrp, chmod, chown, cp, cpio, crontab, curl, cut, date, dd, df, diff, dig, dnf, du, expr, fdisk, file, find, firewall-cmd, free, ftp, grep, head, history, hostname, id, ifconfig, iostat, ip, kill, last, lessandmore, ln, locate, lpstatandlpadmin, ls, lsof, lspci, mail, man, mdadm, mkdirandrmdir, mkisofs, mount, mutt, mv, nano, netstat, nice, renice, nslookup, passwd, pam_tally2, paste, ping, perloneliner, pkill, ps, pwd, reboot, poweroff, rm, rpm, rsync, scp, screen, sed, sort, ss, ssh, sysctl, tail, tar, tcpdump, top, touch, tr, traceroute, umask, uname, uniq, uptime, useradd, vi, vmstat, w, who, watch, wc, wget, ypcat, yppasswd, yum, zip, sar
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After that start learning shell scripting using below topics
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[Shell Scripting Video Tutorial](https://www.youtube.com/watch?v=7GNUzvjS_mE&list=PL8cE5Nxf6M6b8qW7CSMsdKbEsPdG9pWfu)
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Difference between scripting and programming
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What is shell scripting and it's advantages
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PATH environment variable
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What is sub-shell
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[Make Shell Script Template](https://www.youtube.com/watch?v=7KEQJ7jtkTg)
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[Quotes single, double and reverse - Know difference between each](https://www.youtube.com/watch?v=9_fhRI-dos4)
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Grab User input and Print - Using read command
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Bash colors
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Script exit status
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[Variables and it's rules](https://www.youtube.com/watch?v=839s_OtTqDA)
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[Special Variables](https://www.youtube.com/watch?v=PfxzX4XNYRE)
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Environment Variables, system variables and user defined variables
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Constant variables, Local & Global variables and Special variables
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Positional Parameters
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[Count number command line arguments $#](https://www.youtube.com/watch?v=YizjrX9ph10)
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[Arithmetic Operators](https://www.youtube.com/watch?v=qxNQ_D8txPo)
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[Relational Operators](https://www.youtube.com/watch?v=U-u1wx5VeTU)
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Relational ASCII operators
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[LogicalOperators](https://www.youtube.com/watch?v=m_F1FTKdUU4)
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Assignment Operators
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Boolean Operators
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Redirecting Input, output and errors
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Maths using expr command
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Real maths using bc command
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Do mathametics using let command
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Escape sequence
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[if statement](https://www.youtube.com/watch?v=gncu9vzmILw)
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[if-else statement](https://www.youtube.com/watch?v=nDhbOeEQeNY)
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[if-else-if statement](https://www.youtube.com/watch?v=UJET-9cmaqU)
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Nested if statement
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Case statement
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For Loop
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While Loop
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Until Loop
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Break, sleep, continue and Exit
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Functions
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Arrays
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Eval command
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Shifting parameters using shift command
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Tput making menu's
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Executing Multiple scripts from single script
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$(()) - Pass command to sub-shell
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logger logging messages to log file
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IFS - Input Field Separator
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Exec to send input to terminal
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Writing CPU Usage script
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Writing Disk Utilization script
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Trouble shooting debugging shell scripts
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Checking shell script errors and improvements using shellcheck.net site
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