bash-utils is utility functions for bash. These functions wraps complex bash trics. Encourage your scripting.
##Usage Add line on your bash script.
. /path/to/bashutils.sh##Functions ###Conditional functions These functions returns no string and exit code 0 or another numbers. It can be use in conditional expression in if-statement.
if not_equal a b; then
echo true
fi
# => true####equal {ARG1} {ARG2} If ARG1 and ARG2 is equal, function exit with 0.
$ equal 'a' 'a' => 0 (true)
$ equal 10 10 => 0 (true)
$ equal '10' 10 => 0 (true)
####not_equal {ARG1} {ARG2} Negated equal function
$ not_equal 10 55 => 0 (true)
####nothing {STR} If STR is empty string '', function exit with 0.
$ nothing '' => 0 (true)
$ nothing '0' => not 0 (false)
####not_nothing {STR} Negated nothing function
$ not_nothing '' => not 0 (false)
####greater_than {ARG1} {ARG2} If ARG1 is greater than ARG2, function exit with 0.
$ greater_than 10 1 => 0 (true)
$ greater_than '10' 5 => 0 (true)
$ greater_than 3 3 => not 0 (false)
$ greater_than -4 -10 => 0 (true)
####greater_than_equal {ARG1} {ARG2} If ARG1 is equal to ARG2 or ARG1 is greater than ARG2, function exit with 0.
$ greater_than 10 1 => 0 (true)
$ greater_than 3 3 => 0 (true)
####less_than {ARG1} {ARG2} If ARG1 is less than ARG2, function exit with 0.
####less_than_equal {ARG1} {ARG2} If ARG1 is equal to ARG2 or ARG1 is less than ARG2, function exit with 0.
####exists {PATH} If file or directory exists in PATH, function exit with 0.
$ exists /dev => 0 (true)
###File/Directory path functions These functions return path string.
####current_directory_name Return name of working directory.
$ cd ~ && current_directory_name => {name of homedirectory}
####current_directory_path Return full path of current working directory
$ cd ~ && current_directory_path => /home/{name of homedirectory}
###String functions These functions manipulate strings and return processed string.
####format_string {TEMPLATE} {ARGS}...
This function replate from %s in TEMPALTE to ARGS in order.
$ format_string 'your %s is %s' rank 17 => your rank is 17
####reverse_string {STR} This function reverse STR character by character.
$ reverse_string test => tset
####tokenize_string {STR} This function tokenizes {STR} by {IFS} enviroment variable. Default IFS is space.
$ tokenize_string 'hello world' =>
hello
world
If you want split your own separator, subshell is good idea.
echo "$(IFS=\@ tokenize_string 'hello@world')" returns same above result.
####join_string {SEP} {ARGS}... This function joins ARGS with SEP. SEP must be only 1 character.
$ join_string , this is joined string => this,is,joined,string.
####split_string {SEP} {STR} STR split by SEP. SEP must be only 1 character.
$ split_string , this,is,splited,string => this is splited string.
###Control $PATH enviroment functions
####remove_path {PATH} Remove PATH from $PATH enviroment.
####append_path {PATH} Add PATH to back of $PATH.
####prepend_path {PATH} Add PATH to front of $PATH
###Decorated echo functions These functions print colorized or bolded strings. Color naming reference is bootstrap
####echo_primary {STR} Print STR in blue.
####echo_success {STR} Print STR in green.
####echo_info {STR} Print STR in light blue
####echo_warning {STR} Print STR in yellow.
####echo_danger {STR} Print STR in red.
####echo_emphasis {STR} Print bold STR.
####echo_primary_emphasis {STR} Print bold STR in blue.
####echo_success_emphasis {STR} Print bold STR in green.
####echo_info_emphasis {STR} Print bold STR in light blue
####echo_warning_emphasis {STR} Print bold STR in yellow.
####echo_danger_emphasis {STR} Print bold STR in red.