hans/pure-bash-bible
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

fix bugs in examples

Browse Source
This commit is contained in:
Dylan Araps
2018-06-14 17:58:54 +10:00
parent d7193d06ef
commit 8acd8fb2da
1 changed files with 19 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
README.md
View File

@@ -346,7 +346,7 @@ for file in ~/Pictures/*.png; do
done done
# Iterate over directories. # Iterate over directories.
for dir in ~/Downloads/; do for dir in ~/Downloads/*/; do
printf '%s\n' "$dir" printf '%s\n' "$dir"
done done
@@ -513,7 +513,8 @@ get_cursor_pos() {
for((;i++<10;)){ echo "$i";} for((;i++<10;)){ echo "$i";}
# Undocumented method. # Undocumented method.
for i in {1..10};{ echo "$i";} # Note: This is commented to make shellcheck play nice.
# for i in {1..10};{ echo "$i";}
# Expansion. # Expansion.
for i in {1..10}; do echo "$i"; done for i in {1..10}; do echo "$i"; done
@@ -549,8 +550,9 @@ f()(($1))
# Using tests, loops etc. # Using tests, loops etc.
# Note: You can also use ‘while’, ‘until’, ‘case’, ‘(())’, ‘[[]]’. # Note: You can also use ‘while’, ‘until’, ‘case’, ‘(())’, ‘[[]]’.
f()if true; then echo "$1"; fi # Note: These are commented to make shellcheck play nice.
f()for i in "$@"; do echo "$i"; done # f()if true; then echo "$1"; fi
# f()for i in "$@"; do echo "$i"; done
``` ```
### Shorter `if` syntax. ### Shorter `if` syntax.
@@ -622,17 +624,17 @@ http://tldp.org/LDP/abs/html/internalvariables.html
### Get the location to the `bash` binary. ### Get the location to the `bash` binary.
```sh ```sh
$BASH "$BASH"
``` ```
### Get the version of the current running `bash` process. ### Get the version of the current running `bash` process.
```sh ```sh
# As a string. # As a string.
$BASH_VERSION "$BASH_VERSION"
# As an array. # As an array.
${BASH_VERSINFO[@]} "${BASH_VERSINFO[@]}"
``` ```
### Open the user's preferred text editor. ### Open the user's preferred text editor.
@@ -647,23 +649,23 @@ ${BASH_VERSINFO[@]}
### Get the name of the current function. ### Get the name of the current function.
```sh ```sh
$FUNCNAME "$FUNCNAME"
``` ```
### Get the host-name of the system. ### Get the host-name of the system.
```sh ```sh
$HOSTNAME "$HOSTNAME"
# NOTE: This variable may be empty. # NOTE: This variable may be empty.
# Optionally set a fallback to the hostname command. # Optionally set a fallback to the hostname command.
${HOSTNAME:-$(hostname)} "${HOSTNAME:-$(hostname)}"
``` ```
### Get the architecture of the Operating System. ### Get the architecture of the Operating System.
```sh ```sh
$HOSTTYPE "$HOSTTYPE"
``` ```
### Get the name of the Operating System / Kernel. ### Get the name of the Operating System / Kernel.
@@ -672,7 +674,7 @@ This can be used to add conditional support for different Operating
Systems without needing to call `uname`. Systems without needing to call `uname`.
```sh ```sh
$OSTYPE "$OSTYPE"
``` ```
### Get the current working directory. ### Get the current working directory.
@@ -680,13 +682,13 @@ $OSTYPE
This is an alternative to the `pwd` built-in. This is an alternative to the `pwd` built-in.
```sh ```sh
$PWD "$PWD"
``` ```
### Get the number of seconds the script has been running. ### Get the number of seconds the script has been running.
```sh ```sh
$SECONDS "$SECONDS"
``` ```
## Other ## Other
@@ -702,7 +704,7 @@ in place of the `date` command in a lot of cases.
date() { date() {
# Usage: date "format" # Usage: date "format"
# See: 'man strftime' for format. # See: 'man strftime' for format.
printf "%($1)T\\n" printf "%($1)T\\n" "-1"
} }
# Examples: # Examples:
@@ -711,10 +713,10 @@ date() {
date "+%a %d %b - %l:%M %p" date "+%a %d %b - %l:%M %p"
# Using printf. # Using printf.
printf '%(%a %d %b - %l:%M %p)T\n' printf '%(%a %d %b - %l:%M %p)T\n' '-1'
# Assigning a variable. # Assigning a variable.
printf -v date '%(%a %d %b - %l:%M %p)T\n' printf -v date '%(%a %d %b - %l:%M %p)T\n' '-1'
``` ```
### Bypass shell aliases. ### Bypass shell aliases.