170 lines
6.6 KiB
Bash
170 lines
6.6 KiB
Bash
:<<'info'
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shellnotes - notegrep.sh
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(C) Dimitris Marakomihelakis
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Released under the "All rights reserved" category. See the RIGHTS.txt file
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in /docs/github/ for its full text.
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info
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alias grep='grep --color=always'
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:<<'comment'
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Here, the color parameter is specified in a grep-specific environment variable.
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Then, you don't have to enter it in the command line again.
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The "always" option is selected in order to colorize the output of the "grep"
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command every time it is called, even if the output is piped to a command, or
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redirected to a file.
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Also works with:
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export GREP_OPTIONS='--color=auto'
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DO NOT pipe notegrep with less.
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comment
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export GREP_COLORS='ms=01;33'
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:<<'comment'
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Now, change the highlight color of grep by using an environment variable, GREP_COLORS.
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An empty string or 0 resets all text styling and resets both colors to the defaults but
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does not reset the font to the default. Some options/examples are:
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┏━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
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┃ ### ┃ GNOME Terminal ┃ xterm ┃ non-GUI TTY ┃
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┡━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
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│ │ «reset style+colors» │ «reset style+colors» │ «reset style+colors» │
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│ 0 │ «reset style+colors» │ «reset style+colors» │ «reset style+colors» │
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├─────┼─────────────────────────┼─────────────────────────┼─────━━━━━━━━━━━━━━━━━━━
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│ 1 │ +bold, +brighter color │ +bold, +brighter color │ +brighter color, │
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│ │ │ │ -forced grey │
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│ 2 │ +fainter color │ +fainter color │ +forced grey │
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│ 3 │ +italic │ +italic │ +forced green │
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│ │ │ │ ● overrides 2 and 4 │
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│ 4 │ +underline │ +underline │ +forced cyan │
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│ │ │ │ ● overrides 2 │
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│ 5 │ «no effect» │ +blink │ «no effect» │
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│ 7 │ +invert colors │ +invert colors │ +invert colors │
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│ 8 │ +invisible │ +invisible │ «no effect» │
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│ │ │ ● underline appears │ │
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│ 9 │ +strikethrough │ +strikethrough │ «no effect» │
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├────┼───────────────────────────────────────────────────────────━━━━━━━━━━━━━━━━━ Source: https://askubuntu.com/questions/1042234/modifying-the-color-of-grep
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│ 21 │ -bold, -brighter color, │ +double underline │ -brighter color, │
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│ │ -fainter color ├ -forced grey │ │
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│ 22 │ -bold, -brighter color, │ -bold, -brighter color, │ -brighter color, │
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│ │ -fainter color │ -fainter color │ -forced grey │
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│ 23 │ -italic │ -italic │ -forced green │
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│ 24 │ -underline │ -underline, │ -forced cyan │
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│ │ │ -double underline │ │
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│ 25 │ «no effect» │ -blink │ «no effect» │
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│ 27 │ -invert colors │ -invert colors │ -invert colors │
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│ 28 │ -invisible │ -invisible │ «no effect» │
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│ 29 │ -strikethrough │ -strikethrough │ «no effect» │
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└─────┴─────────────────────────┴─────────────────────────┴──────━━━━━━━━━━━━━━━━━━
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In this example, the matching regex is going to be displayed as bold yellow (in most terminals).
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comment
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export LESSCHARSET=utf-8
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:<<'comment'
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Do the above for utf-8 support.
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It should also work with:
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LANG=
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LC_COLLATE="en_US.UTF-8"
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LC_CTYPE="en_US.UTF-8"
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LC_MESSAGES="en_US.UTF-8"
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LC_MONETARY="en_US.UTF-8"
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LC_NUMERIC="en_US.UTF-8"
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LC_TIME="en_US.UTF-8"
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LC_ALL="en_US.UTF-8"
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comment
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function notegrep() {
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DIR="$(pwd)"
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do_grep() {
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if [ -e ${DEFAULT_PATH}/${notename} ]; then
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cd $DEFAULT_PATH
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out="$(grep $regex $notename | wc -l)"
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if [ "$(grep -c $regex $notename)" -eq 0 ]; then
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echo "No matches found."
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else
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if [ $out -gt 20 ]; then
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grep -i $regex $notename | less
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elif [ $out -le 20 ]; then
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grep -i $regex $notename
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fi
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fi
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else
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echo "This note doesn't exist in $DEFAULT_PATH."
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fi
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}
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check_params() {
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case $option in
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parameter)
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#parameter script import...
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;;
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*)
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echo "Invalid parameter. Proceeding in normal grep mode."
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do_grep
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;;
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esac
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}
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if [ $# -eq 0 ]; then
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echo -n "Enter regex: " && read regex
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echo -n "Enter note name: " && read notename
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else
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if [ $# -eq 3 ]; then
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option=$1
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regex=$2
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notename=$3
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check_params
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return 0
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else
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regex=$1
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notename=$2
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fi
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fi
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if [ -z $notename ]; then
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echo "Invalid input."
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cd $DIR
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return 0
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elif [ -z $regex ]; then
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echo "No pattern given."
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cd $DIR
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return 0
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fi
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do_grep
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unset GREP_OPTIONS
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unset -f check_params
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unset -f do_grep
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cd $DIR
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return 0
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}
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