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the-art-of-command-line
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Add coverage of watch. 

Thanks to ShawnMilo!
Fixes #237
Fixes #241
pull/240/merge
Joshua Levy 2015-07-27 22:52:17 -07:00
parent a1a77f6d37
commit b0c958fb62
1 changed files with 5 additions and 1 deletions
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@ -293,6 +293,8 @@ A few examples of piecing together commands:
cat access.log | egrep -o 'acct_id=[0-9]+' | cut -d= -f2 | sort | uniq -c | sort -rn cat access.log | egrep -o 'acct_id=[0-9]+' | cut -d= -f2 | sort | uniq -c | sort -rn
``` ```
- To continuously monitor changes, use `watch`, e.g. check changes to files in a directory with `watch -d -n 2 'ls -rtlh | tail'` or to network settings while troubleshooting your wifi settings with `watch -d -n 2 ifconfig`.
- Run this function to get a random tip from this document (parses Markdown and extracts an item): - Run this function to get a random tip from this document (parses Markdown and extracts an item):
```sh ```sh
function taocl() { function taocl() {
@ -329,7 +331,7 @@ A few examples of piecing together commands:
- `fold`: wrap lines of text - `fold`: wrap lines of text
- `column`: format text into columns or tables - `column`: format text into fixed-width columns or tables
- `expand` and `unexpand`: convert between tabs and spaces - `expand` and `unexpand`: convert between tabs and spaces
@ -361,6 +363,8 @@ A few examples of piecing together commands:
- `time`: execute and time a command - `time`: execute and time a command
- `watch`: run a command repeatedly, showing results and/or highlighting changes
- `tac`: print files in reverse - `tac`: print files in reverse
- `shuf`: random selection of lines from a file - `shuf`: random selection of lines from a file