codrcodz
commented
6 years ago pi@pi:~/twobucks $ dryrun="--spider"
pi@pi:~/twobucks $ other_args="-nH -r"
pi@pi:~/twobucks $ more_args="--no-parent"
pi@pi:~/twobucks $ wget_args=( ${dryrun} )
pi@pi:~/twobucks $ wget_args+=( ${other_args} ${more_args} )
pi@pi:~/twobucks $ echo ${wget_args[@]}
--spider -nH -r --no-parent
pi@pi:~/twobucks $ wget ${wget_args[@]} google.com
Spider mode enabled. Check if remote file exists.
--2018-04-04 18:52:50-- http://google.com/
Resolving google.com (google.com)... 216.58.194.46, 2607:f8b0:4000:802::200e
Connecting to google.com (google.com)|216.58.194.46|:80... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: http://www.google.com/ [following]
Spider mode enabled. Check if remote file exists.
--2018-04-04 18:52:50-- http://www.google.com/
Resolving www.google.com (www.google.com)... 108.177.104.103, 108.177.104.106, 108.177.104.99, ...
Connecting to www.google.com (www.google.com)|108.177.104.103|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [text/html]
Remote file exists and could contain links to other resources -- retrieving.
--2018-04-04 18:52:50-- http://www.google.com/
Reusing existing connection to www.google.com:80.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [text/html]
Saving to: ‘index.html.tmp.tmp’
index.html.tmp.tmp [ <=> ] 11.57K --.-KB/s in 0.007s
2018-04-04 18:52:50 (1.63 MB/s) - ‘index.html.tmp.tmp’ saved [11844]
Removing index.html.tmp.tmp.
Found no broken links.
FINISHED --2018-04-04 18:52:50--
Total wall clock time: 0.4s
Downloaded: 1 files, 12K in 0.007s (1.63 MB/s)
pi@pi:~/twobucks $ type xargs
xargs is /usr/bin/xargs
pi@pi:~/twobucks $ type declare
declare is a shell builtin
pi@pi:~/twobucks $ declare --help | egrep "^\s*-a"
-a to make NAMEs indexed arrays (if supported)
pi@pi:~/twobucks $ declare -a ls_args
pi@pi:~/twobucks $ ls_args=( -l -t )
pi@pi:~/twobucks $ ls ${ls_args[@]}
total 0
-rw-r--r-- 1 pi pi 0 Apr 4 18:51 you
-rw-r--r-- 1 pi pi 0 Apr 4 18:50 owe
-rw-r--r-- 1 pi pi 0 Apr 4 18:49 me
-rw-r--r-- 1 pi pi 0 Apr 4 18:48 two
-rw-r--r-- 1 pi pi 0 Apr 4 18:47 bucks
pi@pi:~/twobucks $ # a day with arrays is a day without xargs
pcseanmckay
This should add the postgresql repo for yum based distros.