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84 lines
2.4 KiB
Bash
84 lines
2.4 KiB
Bash
#!/usr/bin/env bash
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# vim:ts=4:sts=4:sw=4:et
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#
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# Author: Hari Sekhon
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# Date: circa 2006 - 2012 (forked from .bashrc)
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#
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# https://github.com/harisekhon/bash-tools
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#
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# License: see accompanying Hari Sekhon LICENSE file
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#
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# If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
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#
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# https://www.linkedin.com/in/harisekhon
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#
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# ============================================================================ #
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# P r o m p t M a g i c
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# ============================================================================ #
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# XXX: Warning: This must be perfect - edit at your own peril as imperfect PS1 prompt codes cause terminal wrap around to the same line
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# \[\033k\033\\\] is required for Screen auto title feature to detect prompt
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# replace \033 with \e as it's directly supported in PS1
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# need 'Defaults env_keep=STY' for this to not trigger on sudo su
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SCREEN_ESCAPE="\[\ek\e\\\\\]"
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PS1=""
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# if inside Screen, set the screen escape inside PS1
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[ -n "$STY" ] && PS1="$SCREEN_ESCAPE"
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# shellcheck disable=SC2154
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PS1_COLOUR="$txtgrn"
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if [ $EUID -eq 0 ]; then
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# shellcheck disable=SC2154
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PS1_COLOUR="$txtred"
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fi
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# XXX: important that every single escape sequence is enclosed in \[ \] to make sure it isn't included in the line wrapping calculcation otherwise the lines wrap back on to themselves
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# \W basename of cwd
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# \w full path of cwd
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# \h host
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# shellcheck disable=SC2154
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export PS1+="\[$PS1_COLOUR\]\t \[$bldblu\]\w \[$PS1_COLOUR\]> \[$txtrst\]"
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# Screen relies on prompt having a dollar sign to detect the next word to set the screen title dynamically - .screenrc needs the following setting
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#
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# shelltitle ' > |'
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# TODO: make screen auto title detect # for root
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# For passing PS1 around:
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#
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# base64 <<< "$PS1"
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#
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# and then pass the result through base64 -d
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#
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# base64 <<< "$PS1" | base64 -d
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#
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# is a noop to demonstrate
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if [ -z "$BASH_TIMING" ]; then
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export PS4="--> "
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fi
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# Bash performance profiling, can be heavy on performance, &>/tmp/bash_perf.out then use a profiling script
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# combine with DEBUG=1 or set -x
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bash_timing(){
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export BASH_TIMING=1
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export PS4='$(date "+%s.%N ($LINENO) + ") --> '
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}
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debug_bashrc(){
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PS4='+ $BASH_SOURCE:$LINENO:' bash -xic '' 2>&1 | less
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}
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debug_bash_profile(){
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PS4='+ $BASH_SOURCE:$LINENO:' bash -xlic '' 2>&1 | less
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}
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