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== How can I see a progress bar when copying/moving files? ==

You can't with cp(1), but you can either:
 * build one yourself with tools such as [[http://www.ivarch.com/programs/pv.shtml|pv]] or [[http://clpbar.sourceforge.net/|clpbar]];
 * use some other tool, e.g. [[http://members.iinet.net.au/~lynx/vcp/|vcp]].

You may want to use pv(1) since it's packaged for many systems. In that case, it's convenient if you create a function or script to wrap it.

For example:
== How can I set the contents of my terminal's title bar? ==
If you have a terminal that understands `xterm`-compatible escape sequences, and you just want to set the title one time, you can use a function like this:
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pv "$1" > "$2/${1##*/}" settitle() { printf '\e]2;%s\a' "$*"; }
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This lacks error checking and support for moving files. If you want to set the title bar to the currently-running command line every time you type a command, then this solution approximates it:

{{{
trap 'printf "\e]2;%s\a" "$(HISTTIMEFORMAT= history 1)" >/dev/tty' DEBUG
}}}

However, it leaves the command history number in place, and it doesn't trigger on explicit subshells like `(cd foo && make)`.

Or to use just the name and arguments of the current simple command:

{{{
trap 'printf "\e]2;%s\a" "$BASH_COMMAND" >/dev/tty' DEBUG
}}}

For Posix-compliant shells which don't recognize '\e' as a character sequence to be interpreted as `Escape`, '\033' may be substituted instead.

How can I set the contents of my terminal's title bar?

If you have a terminal that understands xterm-compatible escape sequences, and you just want to set the title one time, you can use a function like this:

settitle() { printf '\e]2;%s\a' "$*"; }

If you want to set the title bar to the currently-running command line every time you type a command, then this solution approximates it:

trap 'printf "\e]2;%s\a" "$(HISTTIMEFORMAT= history 1)" >/dev/tty' DEBUG

However, it leaves the command history number in place, and it doesn't trigger on explicit subshells like (cd foo && make).

Or to use just the name and arguments of the current simple command:

trap 'printf "\e]2;%s\a" "$BASH_COMMAND" >/dev/tty' DEBUG

For Posix-compliant shells which don't recognize '\e' as a character sequence to be interpreted as Escape, '\033' may be substituted instead.

BashFAQ/093 (last edited 2016-10-22 16:49:46 by politkovskaja)