mirror of
https://github.com/kneutron/ansitest.git
synced 2025-01-16 04:42:55 +08:00
85 lines
4.0 KiB
Bash
85 lines
4.0 KiB
Bash
#!/bin/bash
|
|
|
|
exit;
|
|
|
|
# REF: http://www.oilshell.org/blog/2021/08/xargs.html
|
|
|
|
cd /Volumes/zsgtera4/shrcompr-zsgt2B
|
|
ls *tar* |gxargs -n 1 -P 3 countdown 30
|
|
|
|
#(17) tar files, run 3 in parallel
|
|
|
|
while running, can watch -n 10 in split screen session:
|
|
|
|
$ ps -ef|grep countd
|
|
501 38095 68669 0 1:02PM ttys014 0:00.00 gxargs -n 1 -P 3 countdown 30
|
|
501 38096 38095 0 1:02PM ttys014 0:00.01 /bin/bash5 /Users/dave/bin/countdown 30 Mac-startup-key-combinations.pdf
|
|
501 38097 38095 0 1:02PM ttys014 0:00.01 /bin/bash5 /Users/dave/bin/countdown 30 Star_Trek-Picard_Free_Series_Premiere_Episode_CBS_All_Access-1PPm5l3o2zw.mkv
|
|
501 38098 38095 0 1:02PM ttys014 0:00.01 /bin/bash5 /Users/dave/bin/countdown 30 flist--kickstart-rhel79-dvd-davefiles.txt
|
|
501 38106 37219 0 1:02PM ttys015 0:00.00 grep countd
|
|
|
|
(after count=0 , next )
|
|
$ ps -ef|grep countd
|
|
501 38095 68669 0 1:02PM ttys014 0:00.01 gxargs -n 1 -P 3 countdown 30
|
|
501 38203 38095 0 1:03PM ttys014 0:00.01 /bin/bash5 /Users/dave/bin/countdown 30 iscsi-server-config.tar
|
|
501 38204 38095 0 1:03PM ttys014 0:00.01 /bin/bash5 /Users/dave/bin/countdown 30 iscsi-vm-configs.tar
|
|
501 38206 38095 0 1:03PM ttys014 0:00.01 /bin/bash5 /Users/dave/bin/countdown 30 kickstart-rhel79-dvd-davefiles.tgz
|
|
|
|
# Believe it or not, I use this to randomize music and videos :)
|
|
find ... |shuf |xargs mplayer # pass randomized list to mplayer as args
|
|
|
|
/Volumes/zsgtera4/shrcompr-zsgt2B $ ls *tar* |shuf |xargs echo
|
|
kickstart-rhel79-dvd-davefiles.tgz rootbin-fryserver.tar.gz
|
|
osx-restart-sshd.sh Star_Trek-Picard_Free_Series_Premiere_Episode_CBS_All_Access-1PPm5l3o2zw.mkv
|
|
zfs-2.0.7.tar.gz flist--kickstart-rhel79-dvd-davefiles.txt zfs-2.1.1.tar.gz
|
|
ventoy-1.0.15-linux.tar.gz iscsi-server-config.tar ventoy-1.0.61-linux.tar.gz syncthing-linux-amd64-v1.14.0.tar.gz
|
|
zfs-0.8.6.tar.gz Mac-startup-key-combinations.pdf iscsi-vm-configs.tar kvpm-0.9.10.tar.gz
|
|
virtbox-vm--cubietruck-temp-replacement-squid-pihole.tar.lzop zfs-2.1.2.tar.gz
|
|
|
|
Run again, different order:
|
|
$ ls *tar* |shuf |xargs echo
|
|
ventoy-1.0.15-linux.tar.gz zfs-2.0.7.tar.gz iscsi-vm-configs.tar zfs-2.1.2.tar.gz Mac-startup-key-combinations.pdf
|
|
kickstart-rhel79-dvd-davefiles.tgz virtbox-vm--cubietruck-temp-replacement-squid-pihole.tar.lzop
|
|
kvpm-0.9.10.tar.gz Star_Trek-Picard_Free_Series_Premiere_Episode_CBS_All_Access-1PPm5l3o2zw.mkv
|
|
ventoy-1.0.61-linux.tar.gz rootbin-fryserver.tar.gz flist--kickstart-rhel79-dvd-davefiles.txt zfs-2.1.1.tar.gz
|
|
zfs-0.8.6.tar.gz osx-restart-sshd.sh iscsi-server-config.tar syncthing-linux-amd64-v1.14.0.tar.gz
|
|
|
|
$ echo "alice bob dave fred" |xargs -n 2 echo
|
|
alice bob
|
|
dave fred
|
|
|
|
$ echo "alice bob dave fred" |xargs -n 2 echo hi
|
|
hi alice bob
|
|
hi dave fred
|
|
|
|
NOTE xargs can basically "paste -" for everything in 1 line
|
|
|
|
# REF: https://www.tecmint.com/xargs-command-examples/
|
|
|
|
# for all *.sh files, wordcount lines in parallel=2 (faster)
|
|
$ ls *.sh |xargs -n 1 -P 2 wc -l
|
|
|
|
# fan a file out - cp to multiple dirs
|
|
echo target1 target2 |xargs -n 1 cp -v /path/sourcefile # cp sourcefile to both targets
|
|
# could also do this with scp!
|
|
|
|
You can enable verbosity using the -t flag, which tells xargs to print the
|
|
command line on the standard error output before executing it.
|
|
|
|
Running more than 1 command with xargs - REF: https://phoenixnap.com/kb/xargs-command
|
|
# [command-providing-input] | xargs -I % sh -c '[command-1] %; [command-2] %'
|
|
|
|
$ cat infile.txt |xargs -I % sh -c 'echo %; mkdir -pv %' # uses "%" as arg substitute
|
|
infile.txt:
|
|
folderone foldertwo folderthree
|
|
|
|
|
|
# REF: https://linuxhint.com/print-columns-awk/
|
|
# limit number of total fields printed in awk (actual input = 96, only print 24)
|
|
$ (echo sd{b..y} sda{a..x} sdb{a..x} sdc{a..x}) |awk '{for(i=1;i<=24;i++) printf $i" "; print ""}'
|
|
sdb sdc sdd sde sdf sdg sdh sdi sdj sdk sdl sdm sdn sdo sdp sdq sdr sds sdt sdu sdv sdw sdx sdy
|
|
|
|
# cut can also do this (print a range of fields/limit)
|
|
$ (echo sd{b..y} sda{a..x} sdb{a..x} sdc{a..x}) |cut -d' ' -f1-24
|
|
sdb sdc sdd sde sdf sdg sdh sdi sdj sdk sdl sdm sdn sdo sdp sdq sdr sds sdt sdu sdv sdw sdx sdy
|