amber is a code search and replace tool written by Rust. This tool is inspired by ack, ag, and other grep-like tools.

• Recursively search from the current directory
• Ignore VCS directories (.git, .hg, .svn, .bzr)
• Ignore binary files
• Output by the colored format

Large files ( > 1MB by default) are divided and searched in parallel.

amber can replace a keyword over directories (traditionally by find ... | xargs sed -i '...') . You can decide to do replacing or not interactively.

Install the amber-search-git package from AUR.

yaourt -S amber-search-git

Download from release page, and extract to the directory in PATH.

Two commands (ambs/ambr) are provided. ambs means "amber search", and ambr means "amber replace". The search keyword is not regular expression by default. If you want to use regular expression, add --regex.

ambs keyword // recursively search 'keyword' from the current directory. ambs keyword path // recursively search 'keyword' from 'path'. ambr keyword replacement // recursively search 'keyword' from the current directory, and replace to 'replacement' interactively. ambr keyword replacement path // recursively search 'keyword' from 'path', and replace to 'replacement' interactively. 

amber replace interactively by default. If the keyword is found, the following prompt is shown, and wait. If you input 'y', 'Y', 'Yes', the keyword is replaced. 'a', 'A', 'All' means replacing all keywords non-interactively.

Replace keyword? ( Yes[Y], No[N], All[A], Quit[Q] ): 

If --regex option is enabled, regex captures can be used in replacement of ambr.

$ cat text.txt aaa bbb $ ambr --no-interactive --regex '(aaa) (?<pat>bbb)' '$1 $pat ${1} ${pat}' test.txt $ cat text.txt aaa bbb aaa bbb 

Default flags can be configured by ~/.ambs.toml and ~/.ambr.toml. Available entries and default values are below:

regex = false column = false row = false binary = false statistics = false skipped = false interactive = true recursive = true symlink = true color = true file = true skip_vcs = true skip_gitignore = true fixed_order = true parent_ignore = true

You can choose some entries to override like below:

column = true

• CPU: Intel(R) Xeon(R) Gold 6134 CPU @ 3.20GHz
• MEM: 1.5TB
• OS : CentOS 7.5

• source1: https://github.com/torvalds/linux ( 52998files, 2.2GB )
• source2: https://dumps.wikimedia.org/jawiki/latest/jawiki-latest-pages-articles.xml.bz2 ( 1file, 8.5GB )

• pattern1( many files with many matches ) : 'EXPORT_SYMBOL_GPL' in source1
• pattern2( many files with few matches ) : 'irq_bypass_register_producer' in source1
• pattern3( a large file with many matches ) : '検索結果' in source2
• pattern4( a large file with few matches ) : '"Quick Search"' in source2

• amber (v0.5.1)
• ripgrep (v0.10.0)
• grep (v2.20)
• fastmod (v0.2.0)
• find/sed (v4.5.11/v4.2.2)

hyperfine with the following options.

• --warmup 3: to load all data on memory.

• search ( compare_ambs.sh )

• replace ( compare_ambr.sh )