Posts with tag fish

Show exec time after executing commandref: https://www.reddit.com/r/fishshell/comments/4yyoi5/see_the_time_of_execution_after_the_end_of_a/function printtime --on-event fish_postexec set duration (echo "$CMD_DURATION 1000" | awk '{printf "%.3fs", $1 / $2}') echo \t$$duration$ en

env-param-too-many-duplicates

2024-03-18

fishsoftwares-and-toolstest

ProblemWhen echo $PATH, many paths appears for tens of times.SolIn config.fish or so, don't use:set PATH xxx:$PATHInstead, add quotes:set PATH "xxx:$PATH

ttt is not set

2024-03-01

TLDRtest -n returns true iff string is unset or (set and non-zero); (in fact because -n didn't receive any string)test -z return true iff string is unset or (set and zero);Strange -n# ttt is not set if test -n $ttt echo 1 else echo 0 endThis outputs 1. (Strange)set ttt "" if test -n $ttt echo 1 else echo 0 endThis outputs 0.Command -zif test -z $ttt echo 1 else echo 0 endThis outputs 1.set ttt "" if test -z $ttt echo 1 else echo 0 endThis still outputs 1. Consistent

tide-config

2024-02-08

This is an example.tide configure --auto --style=Rainbow --prompt_colors='16 colors' --show_time='24-hour format' --rainbow_prompt_separators=Vertical --powerline_prompt_heads=Sharp --powerline_prompt_tails=Flat --powerline_prompt_style='Two lines, character' --prompt_connection=Dotted --powerline_right_prompt_frame=No --prompt_spacing=Sparse --icons='Many icons' --transient=N

array-and-for

https://stackoverflow.com/questions/50027770/fish-shell-how-to-append-an-element-to-an-arrayset -l array "tiny tim" bob set -l children joe elias matt echo $children for i in (seq 2) set children (string join " " $children $array[$i]) end echo $childre

batch-rename-file-extension-in-a-for-loop

Thanks to basename, which is a unix bin filehttps://stackoverflow.com/questions/38590165/how-to-rename-file-extentions-in-fish-in-a-for-loopfor file in *.md mv -v -- "$file" (basename $file .md).txt enduse string replace is also nice

newline-slash-n-in-string

echo -e 来启动对于 \n 的解析

numbers-calculations

https://stackoverflow.com/questions/25828883/add-a-number-in-fish-scripthttps://fishshell.com/docs/2.0/commands.htmlset num (math $num + 1

private-functions

https://stackoverflow.com/questions/25088699/make-fish-functions-privatefunction outer function inner_func echo "I still find this function via automplete." echo "Not anymore!!" functions -e inner_func end # Let's test this! inner_func end $ outer I still find this function via automplete. Not anymore!! $ inner_func fish: Unknown command 'inner_func

switch-font-color

The cmd fish_config brings you to somewhere you can change font color theme

ternary-operator

no solution

unset-variables

set -

Equivalent to test -n $str

string length 'hello, world' 12set str foostring length -q $str; echo $status 0Equivalent to test -n $strstring length --visible (set_color red)foobarthe set_color is discounted, so this is the width of "foobar"6string length --visible 🐟🐟🐟🐟depending on $fish_emoji_width, this is either 4 or 8in new terminals it should be8string length --visible abcdef\r123this displays as "123def", so the width is 66string length --visible a\nbccounts "a" and "bc" as separate lines, so it prints width for each1 2不接收参数不会输出（不是输出 0

string-empty-or-unset

https://stackoverflow.com/questions/47743015/fish-shell-how-to-check-if-a-variable-is-set-emptyunset 就是 empty. 但是 string length empty 不会输出，string length "" 输出 0test -n "$var": var set and its length >= 1test -z "$var": var set and its length == 0但是 test -z 可以不接收参数，test -n 不接收居然会返回 true

string-join-in-non-empty

https://fishshell.com/docs/current/cmds/string-join.htmlstring join -n '/' a b "" dthis gives a/b/d

string-regex-get-variable

git remote -v | string match -rq 'github\.com:(?<remote>[\S]+)\.git'(?<name>...) 其中 ... 是要变量的 regex，而匹配的结果会存储到 $name 这个变量中

string-sub