Fixed some typos and bugs

Thanks to Crestwave's correction on Reddit.
This commit is contained in:
I-Man Ng 2019-05-09 16:04:33 +08:00 committed by GitHub
parent c2fc594db4
commit 6ecd7cf784
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@ -44,8 +44,8 @@ Ctrl + d : if you've type something, Ctrl + d deletes the character under the cu
Ctrl + k : delete all text from the cursor to the end of line.
Ctrl + x + backspace : delete all text from the beginning of line to the cursor.
Ctrl + t : transpose the character before the cursor with the one under the cursor, press Esc + t to transposes the two words before the cursor.
Ctrl + w : delete the word before the cursor.
Ctrl + u : delete the line before the cursor.
Ctrl + w : cut the word before the cursor; then Ctrl + y paste it
Ctrl + u : cut the line before the cursor; then Ctrl + y paste it
Ctrl + x + Ctrl + e : launch editor define by $EDITOR
```
##### Change case
@ -877,7 +877,7 @@ find . -type d
##### Edit all files under current directory (e.g. replace 'www' with 'ww')
```bash
find . name '*.php' -exec sed -i 's/www/w/g' {} \;
find . -name '*.php' -exec sed -i 's/www/w/g' {} \;
```
if no subdirectory
@ -944,7 +944,7 @@ if ((x >= 5)); then …
if ((j==u+2))
# Use [[ ]] for comparison
if [[$age >21]]
if [[ $age -gt 21 ]]
```
[More if commands](http://tldp.org/LDP/Bash-Beginners-Guide/html/sect_07_01.html)
@ -1200,7 +1200,7 @@ curl https://transfer.sh/tG8rM/filename.txt -o filename.txt
```bash
data=file.txt
url=http://www.example.com/$data
if [! -s $data];then
if [ ! -s $data ];then
echo "downloading test data..."
wget $url
fi
@ -1495,7 +1495,12 @@ cp -rp /path/to/directory
##### Store current directory
```bash
pushd . $popd ;dirs -l
pushd .
# then pop
popd
#pushd .
#or use dirs to display the list of currently remembered directories.
dirs -l
```
##### Show disk usage
@ -2491,6 +2496,12 @@ echo -e ' \t '
##### Array
```bash
declare -a array=()
#or
declare array=()
#or associative array
declare -A array=()
```