Reference
[Grep] Synonyms
egrep => grep -E
fgrep => grep -F
[Grep] Options
| Switch | Description |
|---|---|
-A num |
Print num lines of training context |
| ---- | |
-G |
--basic-regexp (default) |
-E |
--extended-regexp |
-P |
--perl-regexp |
| ---- | |
-f file |
--file (Get patterns for file) |
-F |
--fixed-strings |
| ---- | |
-h |
--no-filename |
-H |
--with-filename |
| ---- | |
-l |
--files-with-matches (just print filenames) |
-L |
--files-without-match |
| ---- | |
-r, -R |
--recursive |
-v |
--invert-match |
-i |
--ignore-case |
{:.shortcuts}
Grep
grep [options] [pattern] [file ...]
Search-and-replace in all files
perl -p -i -e 's/hello/HELLO/g' **/*
wc (Word count)
... | wc [options]
| -c | Bytes |
| -l | Lines |
| -m | Characters (incl multi-byte) |
| -w | Words |
[Sudo] Timestamp
| -v | revalidate timestamp for 5 mins |
| -k | invalidate timestamp |
| -K | just like -k |
[Sudo] Interactive
| Switch | Description |
|---|---|
-i [cmd] |
Interactive shell without variables |
-s [cmd] |
Interactive shell |
| ---- | |
-u user |
run as this user |
-g group |
run as this group |
[Sudo] Prompt
| -p prompt | Custom prompt (-p "%p password:") |
[Sudo] File descriptors
| -C fd | Close all open file descriptors |
[Sudo] Options
| -A | Use $SUDO_ASKPASS |
| -b | Run in background |
| -E | Preserve environment |
| -H | use target's $HOME |
| -n | Don't prompt for password |
| -P | Preserve group vector |
| -S | Read password from stdin |
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