Bash/Mgrep
From Attie's Wiki
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m (Attie moved page Mgrep to Bash/Mgrep) |
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* Expression input is at the front, allowing quick & easy editing | * Expression input is at the front, allowing quick & easy editing | ||
* Search directory defaults to <code>.</code>, but can be easily modified | * Search directory defaults to <code>.</code>, but can be easily modified | ||
| − | * Files checked defaults to '<code>*.c</code>' and '<code>*.h</code>', but can be easily changed | + | * Files checked defaults to '<code>*.c</code>', '<code>*.cpp</code>' and '<code>*.h</code>', but can be easily changed |
* Recursively locates all files matching given names (e.g: <code>*.c</code>) | * Recursively locates all files matching given names (e.g: <code>*.c</code>) | ||
* Multiple filenames / masks / patterns may be specified | * Multiple filenames / masks / patterns may be specified | ||
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if [ $# -lt 1 ]; then | if [ $# -lt 1 ]; then | ||
| − | FILES="-name '*.c' -or -name '*.h'" | + | FILES="-name '*.c' -or -name '*.cpp' -or -name '*.h'" |
else | else | ||
FILES="-name '$1'"; shift | FILES="-name '$1'"; shift | ||
| Line 38: | Line 38: | ||
fi | fi | ||
CMD="find \"${DIRECTORY}\" ${FILES}" | CMD="find \"${DIRECTORY}\" ${FILES}" | ||
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if [ -t 1 ]; then | if [ -t 1 ]; then | ||
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eval ${CMD} | \ | eval ${CMD} | \ | ||
while read -r f; do | while read -r f; do | ||
| − | grep - | + | grep -niH -E ${GREP_OPTIONS} -- "${EXPRESSION}" "${f}" |
done | done | ||
Latest revision as of 10:34, 13 March 2013
This is a useful tool that extends grep.
- Expression input is at the front, allowing quick & easy editing
- Search directory defaults to
., but can be easily modified - Files checked defaults to '
*.c', '*.cpp' and '*.h', but can be easily changed - Recursively locates all files matching given names (e.g:
*.c) - Multiple filenames / masks / patterns may be specified
- Uses
grep's extended regex mode - Output shows file and line number, and is highlighted
- If the output flows over the screen,
lessallows you to review the results - If the output doesnt flow over the screen,
lessquits immediately - Automatically detects if the output is to a terminal or pipe, utilizing
lessand highlighting for the former - By default uses case insensitive search, just setting GREP_OPTIONS (even to empty) will disable this
#!/bin/bash if [ $# -lt 1 ]; then echo "usage:" echo " $0 <expression> [directory] [filename..]" exit 1 fi EXPRESSION="$1"; shift if [ $# -lt 1 ]; then DIRECTORY="." else DIRECTORY="$1"; shift fi if [ $# -lt 1 ]; then FILES="-name '*.c' -or -name '*.cpp' -or -name '*.h'" else FILES="-name '$1'"; shift while [ $# -ne 0 ]; do FILES="${FILES} -or -name '$1'"; shift done fi CMD="find \"${DIRECTORY}\" ${FILES}" if [ -t 1 ]; then PIPE=/tmp/$$.mgrep #trap "exec 1>&-; sleep 0.1; rm -f ${PIPE}" EXIT mknod ${PIPE} p less -FKnRX < ${PIPE} & exec 3>&1 exec 1>${PIPE} GREP_OPTIONS="--color=always ${GREP_OPTIONS}" else PIPE="" fi eval ${CMD} | \ while read -r f; do grep -niH -E ${GREP_OPTIONS} -- "${EXPRESSION}" "${f}" done if [ "${PIPE}" != "" ]; then exec 1>&3 exec 3>&- wait rm -f ${PIPE} fi
