Backups complete data and saves in a tar file with name specifying the date and time on which backup was done.
# Use
# Store content of present working directory(in which script is being run )
# in a compressed tarball(uses gzip)
user@user:~/projects/bash-script$ ./backup.sh
'tar: Removing leading '/' from member names
Backup of /home/user/projects/bash-script completed ! Details about the output backup file:
-rw-rw-r-- 1 user user 9293 Jan 18 21:24 ../user_bash-script_backup_09-24-24_PM_Jan_18_2021.tar.gz'
# if time is in 09:24:24 format tar will throw error.
# The reason is that tar interprets colons (:) in file names as meaning it is a file on another machine.
# Can be disabled by using the flag --force-local when using tar.Greets user telling him the present day of week and day
# Use
user@user:~/projects/bash-script$ ./welcome.sh
'Welcome back Abhay Mishra!. The time is 09:38:11 PM IST and the date is January 18 2021.
Today is Monday which is your favourite day.
Wait Does that mean every day is your favourte day?'This script reads file names in current directory within specified depth and changes the names. It first converts space to underscore(_) and then converts them to lowercase RECURSIVELY.
# Use
user@user:~/projects/sample$ tree ./
'./
├── HELLO woRld
│ ├── CODE
│ │ ├── bash Is BAD
│ │ ├── Hello.c
│ │ └── Text.txt
│ ├── java
│ └── pErL
└── NewWorld.pl
5 directories, 3 files'
# default search depth is 1
user@user:~/projects/sample$ ../bash-script/CaSE_case.sh
'Some programs may depend on file names. Continue[y/n]: y'
user@user:~/projects/sample$ tree ./
'./
├── hello_world
│ ├── CODE
│ │ ├── bash Is BAD
│ │ ├── Hello.c
│ │ └── Text.txt
│ ├── java
│ └── pErL
└── newworld.pl
5 directories, 3 files'
# search depth can be specified by giving a non-negative argument
user@user:~/projects/sample$ ../bash-script/CaSE_case.sh 2
'Some programs may depend on file names. Continue[y/n]: y'
user@user:~/projects/sample$ tree
'.
├── hello_world
│ ├── code
│ │ ├── bash Is BAD
│ │ ├── Hello.c
│ │ └── Text.txt
│ ├── java
│ └── perl
└── newworld.pl/
5 directories, 3 files'
# use option -v (and not --verbrose) to list which files were renamed
user@user:~/projects/sample$ ../bash-script/CaSE_case.sh -v 3
Some programs may depend on file names. Continue[y/n]: y
renamed './hello_world/code/bash Is BAD' -> './hello_world/code/bash_Is_BAD'
renamed './hello_world/code/Text.txt' -> './hello_world/code/text.txt'
renamed './hello_world/code/Hello.c' -> './hello_world/code/hello.c'
renamed './hello_world/code/bash_Is_BAD' -> './hello_world/code/bash_is_bad'
user@user:~/projects/sample$ tree
'.
├── hello_world
│ ├── code
│ │ ├── bash_is_bad
│ │ ├── hello.c
│ │ └── text.txt
│ ├── java
│ └── perl
└── newworld.pl
5 directories, 3 files'