All commands (13)
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3pdftk INPUT.PDF input_pw 0123456789 cat output OUTPUT.PDF
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It is the same but more faster real 0m0,007s user 0m0,011s sys 0m0,000s with my solution real 0m0,038s user 0m0,044s sys 0m0,000s with your solution :) Show Sample Output
2lsblk | grep -v part | awk '{print $1 "\t" $4}' -
It repeats a command, such as free, every five seconds and highlights the differences
1watch -n 5 -d '/bin/free -m' -
The shell {} operator is great for this. Here's an example with three directories enclosed in {}:
0mkdir -p -v /home/user/tmp/{dir1,anotherdir,similardir} -
Raise your hand if you haven't used this at least once to share a directory quickly
0cd $mydir && python3 -m http.server 8888 -
Sometimes things break. You can find the most recent errors using a combination of journalctl, along with the classic tools sort and uniq Show Sample Output
0journalctl --no-pager --since today --grep 'fail|error|fatal' --output json | jq '._EXE' | sort | uniq -c | sort --numeric --reverse --key 1 -
Use lsbk (list block) and jq (to manipulate a JSON on the command line) to display partition information: Show Sample Output
0lsblk --json | jq -c '.blockdevices[]|[.name,.size]' -
This is useful if you add sid, install some packages, then remove sid and want to work out which packages you installed from sid that should be removed (e.g. before an upgrade to the new stable). Alternatively you can think of this as "find installed packages that can no longer be installed."
0aptitude search -F '%p %v %V %O' '?narrow(?not(?archive("^[^n][^o].*$")),?version(CURRENT))' | while IFS=' ' read -r pkg ver candidate origin; do if [[ $ver == "$candidate" ]] && [[ $origin == '(installed locally)' ]]; then echo "$pkg"; fi; done -
Adding this alias to ~/.bashrc or, better yet, the system-wide /etc/bash.bashrc (as in my setup) will make it possible to not only run pacman as any user without needing to prepend sudo but will also ensure that it always assumes that the user knows what he or she is doing. Not the best thing for large multi-user enterprise setups at all to say the least, but for home (desktop) use, this is a fantastic time-saver.
0alias pacman=‘sudo pacman --noconfirm’ -
Thanks to this user: https://stackoverflow.com/a/35636373/2394635 Show Sample Output
0s='Test "checkin_resumestorevisit \"- "Online_V2.mt" Run'; s=${s#*'"'}; s=${s%'"'*}; echo "$s" -
Because Mac app bundles contain everything in one place, it makes running them from anywhere, including from a device such as a USB flash drive or external HDD, possible. So if your Mac has a mere 256GB of storage (as mine does), you can free up large quantities of disk space by storing apps like, say, Xcode on external devices.
0sudo mv /Applications/foo /Volumes/bar/Applications/foo && sudo ln -s /Volumes/bar/Applications/foo /Applications/foo -
-1gci -rec | %{ $_.lastWriteTime = ($_.lastAccessTime = ($_.creationTime = (get-date "2021-05-19T10:14:00"))) }
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-2qpdf --pages source.pdf 1-z -- --empty clean-file.pdf
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