Commands by sarahemi (0)

  • …
    bash: commands not found

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Selecting a random file/folder of a folder
I used only shuf command.

Get IPv4 of eth0 for use with scripts
I've been using it in a script to build from scratch proxy servers.

Edit 2 or more files in vim using vim -d
Is this not the same

ls not pattern
Hides some entries from listing.

Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Check whether laptop is running on battery or cable

Sort files by size

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Grep all non-ascii character in file
It will highlight non-ascii character in a file. those character can cause problem for some application parsing ascii file.

Cut/Copy everything arround brackets or parentheses on vim (in normal mode)
Put the cursor on either curly braces ( {, } ). Then press d% The d is delete command, and % is movement command that move the cursor to another matching parentheses (or curly braces in this case). This action will delete every character that was on the way of the movement (from the first curly braces to the second).

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