Add commands for 'others'

- look
- cal
- Forces applications to use the default language for output
- add some output examples
This commit is contained in:
bonnie 2019-10-24 22:19:51 +08:00
parent 3ca70751ab
commit b9a7d4bbed

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@ -67,6 +67,9 @@ Esc + c
##### Run last command ##### Run last command
```bash ```bash
!! !!
# run the previous command using sudo
sudo !!
# of course you need to enter your password
``` ```
##### Run last command and change some parameter using caret substitution (e.g. last command: echo 'aaa' -> rerun as: echo 'bbb') ##### Run last command and change some parameter using caret substitution (e.g. last command: echo 'aaa' -> rerun as: echo 'bbb')
@ -1023,6 +1026,7 @@ echo $(( x ** y )) #8
##### Print out the prime factors of a number (e.g. 50) ##### Print out the prime factors of a number (e.g. 50)
```bash ```bash
factor 50 factor 50
# 50: 2 5 5
``` ```
##### Sum up input list (e.g. seq 10) ##### Sum up input list (e.g. seq 10)
```bash ```bash
@ -1266,7 +1270,6 @@ xcowsay
## System ## System
[[back to top](#handy-bash-one-liners)] [[back to top](#handy-bash-one-liners)]
##### Follow the most recent logs from service ##### Follow the most recent logs from service
```bash ```bash
journalctl -u <service_name> -f journalctl -u <service_name> -f
@ -2202,6 +2205,22 @@ hostnamectl set-hostname "mynode"
## Data wrangling ## Data wrangling
[[back to top](#handy-bash-one-liners)] [[back to top](#handy-bash-one-liners)]
##### Print some words that start with a particular string (e.g. words start with 'phy')
```bash
# If file is not specified, the file /usr/share/dict/words is used.
look phy|head -n 10
# Phil
# Philadelphia
# Philadelphia's
# Philby
# Philby's
# Philip
# Philippe
# Philippe's
# Philippians
# Philippine
```
##### Repeat printing string n times (e.g. print 'hello world' five times) ##### Repeat printing string n times (e.g. print 'hello world' five times)
```bash ```bash
printf 'hello world\n%.0s' {1..5} printf 'hello world\n%.0s' {1..5}
@ -2520,7 +2539,28 @@ complete -W "now tomorrow never" dothis
# never now tomorrow # never now tomorrow
# press 'tab' again to auto-complete after typing 'n' or 't' # press 'tab' again to auto-complete after typing 'n' or 't'
``` ```
##### Displays a calendar
```bash
# print the current month, today will be highlighted.
cal
# October 2019
# Su Mo Tu We Th Fr Sa
# 1 2 3 4 5
# 6 7 8 9 10 11 12
# 13 14 15 16 17 18 19
# 20 21 22 23 24 25 26
# 27 28 29 30 31
# only display November
cal -m 11
```
##### Forces applications to use the default language for output
```bash
export LC_ALL=C
# to revert:
unset LC_ALL
```
##### Encode strings as Base64 strings ##### Encode strings as Base64 strings
```bash ```bash
echo test|base64 echo test|base64