sk - Man Page

-e,  --exact

Enable exact-match

--regex

Search with regular expression instead of fuzzy match

--algo=TYPE

Fuzzy matching algorithm (default: skim_v2)

skim_v2 Almost always the one to choose
skim_v1 The legacy algorithm
clangd  the one used by clangd for keyword completion

--case=[smart,respect,ignore]

To ignore case on matching or not. (default smart)

-n,  --nth=N[,..]

Comma-separated list of field index expressions for limiting search scope. See Field Index Expression for the details.

--with-nth=N[,..]

Transform the presentation of each line using field index expressions

-d,  --delimiter=STR

Field delimiter regex for --nth and --with-nth (default: AWK-style)

--tac

Reverse the order of the search result(normally used together with --no-sort)

--no-sort

Do not sort the search result(normally used together with --tac)

e.g. history | sk --tac --no-sort

--tiebreak=CRI[,..]

Comma-separated list of sort criteria to apply when the scores are tied.

score   Score of the fuzzy match algorithm
index   Prefers line that appeared earlier in the input stream
begin   Prefers line with matched substring closer to the beginning
end     Prefers line with matched substring closer to the end
length  Prefers line with shorter length

- Each criterion could be negated, e.g. (-index)
- Each criterion should appear only once in the list

-i,  --interactive

Start the finder in the command query

-c,  --cmd [cmd]

Specify the command to invoke for fetching options

-I replstr

Replace replstr with the selected item

-m,  --multi

Enable multi-select with tab/shift-tab

--no-multi

Disable multi-select

--bind=KEYBINDS

Comma-separated list of custom key bindings. See Key Bindings for the details.

--no-hscroll

Disable horizontal scroll

--height=HEIGHT[%]

Display sk window below the cursor with the given height instead of using the full screen.

--min-height=HEIGHT

Minimum height when --height is given in percent (default: 10). Ignored when --height is not specified.

--layout=LAYOUT

Choose the layout (default: default)

default       Display from the bottom of the screen
reverse       Display from the top of the screen
reverse-list  Display from the top of the screen, prompt at the bottom

--reverse

A synonym for --layout=reverse

--margin=MARGIN

Comma-separated expression for margins around the finder.

TRBL     Same margin for top, right, bottom, and left
TB,RL    Vertical, horizontal margin
T,RL,B   Top, horizontal, bottom margin
T,R,B,L  Top, right, bottom, left margin

Each part can be given in absolute number or in percentage relative to the terminal size with % suffix.

e.g. sk --margin 10%
    sk --margin 1,5%

--inline-info

Display finder info inline with the query

-p --prompt=STR

Input prompt (default: '> ')

--cmd-prompt=STR

Command prompt (default: 'c> ')

--header=STR

The given string will be printed as the sticky header. The lines are displayed in the given order from top to bottom regardless of --layout option, and are not affected by --with-nth. ANSI color codes are processed even when --ansi is not set.

--header-lines=N

The first N lines of the input are treated as the sticky header. When --with-nth is set, the lines are transformed just like the other lines that follow.

--keep-right

Keep the right end of the line visible when it's too long. Effective only when the query string is empty.

--skip-to-pattern

Line will start with the start of the matched pattern. Effective only when the query string is empty. Was designed to skip showing starts of paths of rg/grep results.

e.g. sk -i -c "rg {} --color=always" --skip-to-pattern '[^/]*:' --ansi

--no-clear-if-empty

Do not clear previous items if new command returns empty result. This might be useful to reduce flickering when typing new commands and the half-complete commands are not valid.

This is not default however because similar usecases for grep and rg had already been optimized where empty result of a query do mean "empty" and previous results should be cleared.

--show-cmd-error

If the command fails, send the error messages and show them as items. This option was intended to help debugging interactive commands. It's not enabled by default because the command often fails before we complete the "cmd-query" and error messages would be annoying.

--ansi

Enable processing of ANSI color codes

--tabstop=SPACES

Number of spaces for a tab character (default: 8)

--color=[BASE_SCHEME][,COLOR:ANSI]

Color configuration. The name of the base color scheme is followed by custom color mappings. Ansi color code of -1 denotes terminal default foreground/background color. You can also specify 24-bit color in #rrggbb format.

e.g. sk --color=bg+:24
    sk --color=light,fg:232,bg:255,bg+:116,info:27

BASE SCHEME:
   (default: dark on 256-color terminal, otherwise 16)

   dark    Color scheme for dark 256-color terminal
   light   Color scheme for light 256-color terminal
   16      Color scheme for 16-color terminal
   bw      No colors

COLOR:
   fg                Text
   bg                Background
   matched|hl        Text of highlighted substrings
   matched_bg        Background of highlighted substrings
   current|fg+       Text (current line)
   current_bg|bg+    Background (current line)
   current_match|hl+ Text of Highlighted substrings (current line)
   current_match_bg  Background of highlighted substrings (current line)
   query             Text of Query (the texts after the prompt)
   query_bg          Background of Query
   info              Info
   border            Border of the preview window and horizontal separators (--border)
   prompt            Prompt
   pointer|cursor    Pointer to the current line (no effect now)
   marker|selected   Multi-select marker
   spinner           Streaming input indicator
   header            Header

--history=HISTORY_FILE

Load search history from the specified file and update the file on completion. When enabled, CTRL-N and CTRL-P are automatically remapped to next-history and previous-history.

--history-size=N

Maximum number of entries in the history file (default: 1000). The file is automatically truncated when the number of the lines exceeds the value.

--cmd-history=HISTORY_FILE

Load command query history from the specified file and update the file on completion.  When enabled, CTRL-N and CTRL-P are automatically remapped to next-history and previous-history.

--cmd-history-size=N

Maximum number of command query entries in the history file (default: 1000). The file is automatically truncated when the number of the lines exceeds the value.

--preview=COMMAND

Execute the given command for the current line and display the result on the preview window. {} in the command is the placeholder that is replaced to the single-quoted string of the current line. To transform the replacement string, specify field index expressions between the braces (See Field Index Expression for the details).

e.g. sk --preview='head -$LINES {}'
    ls -l | sk --preview="echo user={3} when={-4..-2}; cat {-1}" --header-lines=1

sk overrides $LINES and $COLUMNS so that they represent the exact size of the preview window.

A placeholder expression starting with + flag will be replaced to the space-separated list of the selected lines (or the current line if no selection was made) individually quoted.

e.g.
    sk --multi --preview='head -10 {+}'
    git log --oneline | sk --multi --preview 'git show {+1}'

Note that you can escape a placeholder pattern by prepending a backslash.

Also, {q} is replaced to the current query string. {cq} is replaced to the current command query string. {n} is replaced to zero-based ordinal index of the line. Use {+n} if you want all index numbers when multiple lines are selected

Preview window will be updated even when there is no match for the current query if any of the placeholder expressions evaluates to a non-empty string.

--preview-window=[POSITION][:SIZE[%]][:wrap][:hidden][:+SCROLL[-OFFSET]]

POSITION: (default: right)
   up
   down
   left
   right

Determine the layout of the preview window. If the argument ends with :hidden, the preview window will be hidden by default until toggle-preview action is triggered. Long lines are truncated by default. Line wrap can be enabled with :wrap flag.

If size is given as 0, preview window will not be visible, but sk will still execute the command in the background.

+SCROLL[-OFFSET] determines the initial scroll offset of the preview window. SCROLL can be either a numeric integer or a single-field index expression that refers to a numeric integer. The optional -OFFSET part is for adjusting the base offset so that you can see the text above it. It should be given as a numeric integer (-INTEGER), or as a denominator form (-/INTEGER) for specifying a fraction of the preview window height.

e.g.
    # Non-default scroll window positions and sizes
    sk --preview="head {}" --preview-window=up:30%
    sk --preview="file {}" --preview-window=down:2

    # Initial scroll offset is set to the line number of each line of
    # git grep output *minus* 5 lines (-5)
    git grep --line-number '' |
      sk --delimiter : --preview 'nl {1}' --preview-window +{2}-5

    # Preview with bat, matching line in the middle of the window (-/2)
    git grep --line-number '' |
      sk --delimiter : \
          --preview 'bat --style=numbers --color=always --highlight-line {2} {1}' \
          --preview-window +{2}-/2

-q,  --query=STR

Start the finder with the given query

--cmd-query=STR

Specify the initial query for the command query

--print-query

Print query as the first line

-f,  --filter=STR

Filter mode. Do not start interactive finder. It's like a fuzzy-version of grep. skim will output the score and the item to stdout.

--expect=KEY[,..]

Comma-separated list of keys that can be used to complete sk in addition to the default enter key. When this option is set, sk will print the name of the key pressed as the first line of its output (or as the second line if --print-query is also used). The line will be empty if sk is completed with the default enter key. If --expect option is specified multiple times, sk will expect the union of the keys. --no-expect will clear the list.

e.g. sk --expect=ctrl-v,ctrl-t,alt-s --expect=f1,f2,~,@

--read0

Read input delimited by ASCII NUL characters instead of newline characters

--print0

Print output delimited by ASCII NUL characters instead of newline characters

--no-clear

Do not clear finder interface on exit. If skim was started in full screen mode, it will not switch back to the original screen, so you'll have to manually run tput rmcup to return. This option can be used to avoid flickering of the screen when your application needs to start skim multiple times in order.

-1,  --select-1

Automatically select the only match

-0,  --exit-0

Exit immediately when there's no match

--sync

Synchronous search for multi-staged filtering. If specified, skim will launch ncurses finder only after the input stream is complete.

e.g. sk --multi | sk --sync

--pre-select-n=NUM

Pre-select the first NUM items in the multi-selection mode.

--pre-select-pat=REGEX

Pre-select the items that matches the REGEX specified in multi-selection mode. Check the doc for the detailed syntax: https://docs.rs/regex/1.4.1/regex/

--pre-select-items=$'item1\nitem2'

Pre-select the specified items (separated by newline character) in multi-selection mode.

--pre-select-file=FILENAME

Pre-select the items read from FILENAME (separated by newline character) in multi-selection mode.

--version

Display version information and exit

1      The 1st field
2      The 2nd field
-1     The last field
-2     The 2nd to last field
3..5   From the 3rd field to the 5th field
2..    From the 2nd field to the last field
..-3   From the 1st field to the 3rd to the last field
..     All the fields

A term that is prefixed by a single-quote character (') is interpreted as an "exact-match" (or "non-fuzzy") term. sk will search for the exact occurrences of the string.

A term can be prefixed by ^, or suffixed by $ to become an anchored-match term. Then sk will search for the lines that start with or end with the given string. An anchored-match term is also an exact-match term.

If a term is prefixed by !, sk will exclude the lines that satisfy the term from the result. In this case, sk performs exact match by default.

If you don't prefer fuzzy matching and do not wish to "quote" (prefixing with ') every word, start sk with -e or --exact option. Note that when --exact is set, '-prefix "unquotes" the term.

A single bar character term acts as an OR operator. For example, the following query matches entries that start with core and end with either go, rb, or py.

e.g. ^core go$ | rb$ | py$