Posts with tag `string`

Filter lines starting with k4axxx | grep -v "^/k4a

Filter out those containing a specfig pattern

2024-05-06

softwares-and-toolsstringunix-cli

Filter out those containing a specfig pattern<command> | grep -v <to_filter_out>linux cli, get several lines of string, filter out those containing .m

Equivalent to test -n $str

2024-01-16

fishsoftwares-and-toolsstring

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

2024-01-16

fishsoftwares-and-toolsstring

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

2024-01-16

fishsoftwares-and-toolsstring

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

string-regex-get-variable

2024-01-16

fishsoftwares-and-toolsstring

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

2024-01-16

fishsoftwares-and-toolsstring

https://fishshell.com/docs/current/cmds/string-sub.html> string sub --length 2 abcde ab > string sub -s 2 -l 2 abcde bc > string sub --start=-2 abcde de > string sub --end=3 abcde abc > string sub -e -1 abcde abcd > string sub -s 2 -e -1 abcde bcd > string sub -s -3 -e -2 abcde

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Posts with tag string

Filter lines starting with k4a

Filter out those containing a specfig pattern

Equivalent to test -n $str

string-empty-or-unset

string-join-in-non-empty

string-regex-get-variable

string-sub

Posts with tag `string`