sample-bashrc.html

一本完整的描述Unix Shell 编程的工具书的所有范例

 285 # Find a file with pattern $1 in name and Execute $2 on it:
 286 function fe() { find . -type f -iname '*'$1'*' -exec "${2:-file}" {} \;  ; }
 287 # find pattern in a set of filesand highlight them:
 288 function fstr()
 289 {
 290     OPTIND=1
 291     local case=""
 292     local usage="fstr: find string in files.
 293 Usage: fstr [-i] \"pattern\" [\"filename pattern\"] "
 294     while getopts :it opt
 295     do
 296         case "$opt" in
 297         i) case="-i " ;;
 298         *) echo "$usage"; return;;
 299         esac
 300     done
 301     shift $(( $OPTIND - 1 ))
 302     if [ "$#" -lt 1 ]; then
 303         echo "$usage"
 304         return;
 305     fi
 306     local SMSO=$(tput smso)
 307     local RMSO=$(tput rmso)
 308     find . -type f -name "${2:-*}" -print0 | xargs -0 grep -sn ${case} "$1" 2>&- | \
 309 sed "s/$1/${SMSO}\0${RMSO}/gI" | more
 310 }
 311 
 312 function cuttail() # cut last n lines in file, 10 by default
 313 {
 314     nlines=${2:-10}
 315     sed -n -e :a -e "1,${nlines}!{P;N;D;};N;ba" $1
 316 }
 317 
 318 function lowercase()  # move filenames to lowercase
 319 {
 320     for file ; do
 321         filename=${file##*/}
 322         case "$filename" in
 323         */*) dirname==${file%/*} ;;
 324         *) dirname=.;;
 325         esac
 326         nf=$(echo $filename | tr A-Z a-z)
 327         newname="${dirname}/${nf}"
 328         if [ "$nf" != "$filename" ]; then
 329             mv "$file" "$newname"
 330             echo "lowercase: $file --> $newname"
 331         else
 332             echo "lowercase: $file not changed."
 333         fi
 334     done
 335 }
 336 
 337 function swap()         # swap 2 filenames around
 338 {
 339     local TMPFILE=tmp.$$
 340     mv "$1" $TMPFILE
 341     mv "$2" "$1"
 342     mv $TMPFILE "$2"
 343 }
 344 
 345 
 346 #-----------------------------------
 347 # Process/system related functions:
 348 #-----------------------------------
 349 
 350 function my_ps() { ps $@ -u $USER -o pid,%cpu,%mem,bsdtime,command ; }
 351 function pp() { my_ps f | awk '!/awk/ && $0~var' var=${1:-".*"} ; }
 352 
 353 # This function is roughly the same as 'killall' on linux
 354 # but has no equivalent (that I know of) on Solaris
 355 function killps()   # kill by process name
 356 {
 357     local pid pname sig="-TERM"   # default signal
 358     if [ "$#" -lt 1 ] || [ "$#" -gt 2 ]; then
 359         echo "Usage: killps [-SIGNAL] pattern"
 360         return;
 361     fi
 362     if [ $# = 2 ]; then sig=$1 ; fi
 363     for pid in $(my_ps| awk '!/awk/ && $0~pat { print $1 }' pat=${!#} ) ; do
 364         pname=$(my_ps | awk '$1~var { print $5 }' var=$pid )
 365         if ask "Kill process $pid <$pname> with signal $sig?"
 366             then kill $sig $pid
 367         fi
 368     done
 369 }
 370 
 371 function my_ip() # get IP adresses
 372 {
 373     MY_IP=$(/sbin/ifconfig ppp0 | awk '/inet/ { print $2 } ' | sed -e s/addr://)
 374     MY_ISP=$(/sbin/ifconfig ppp0 | awk '/P-t-P/ { print $3 } ' | sed -e s/P-t-P://)
 375 }
 376 
 377 function ii()   # get current host related info
 378 {
 379     echo -e "\nYou are logged on ${RED}$HOST"
 380     echo -e "\nAdditionnal information:$NC " ; uname -a
 381     echo -e "\n${RED}Users logged on:$NC " ; w -h
 382     echo -e "\n${RED}Current date :$NC " ; date
 383     echo -e "\n${RED}Machine stats :$NC " ; uptime
 384     echo -e "\n${RED}Memory stats :$NC " ; free
 385     my_ip 2>&- ;
 386     echo -e "\n${RED}Local IP Address :$NC" ; echo ${MY_IP:-"Not connected"}
 387     echo -e "\n${RED}ISP Address :$NC" ; echo ${MY_ISP:-"Not connected"}
 388     echo
 389 }
 390 
 391 # Misc utilities:
 392 
 393 function repeat()       # repeat n times command
 394 {
 395     local i max
 396     max=$1; shift;
 397     for ((i=1; i <= max ; i++)); do  # --> C-like syntax
 398         eval "$@";
 399     done
 400 }
 401 
 402 function ask()
 403 {
 404     echo -n "$@" '[y/n] ' ; read ans
 405     case "$ans" in
 406         y*|Y*) return 0 ;;
 407         *) return 1 ;;
 408     esac
 409 }
 410 
 411 #=========================================================================
 412 #
 413 # PROGRAMMABLE COMPLETION - ONLY SINCE BASH-2.04
 414 # Most are taken from the bash 2.05 documentation and from Ian McDonalds
 415 # 'Bash completion' package (http://www.caliban.org/bash/index.shtml#completion)
 416 # You will in fact need bash-2.05a for some features
 417 #
 418 #=========================================================================
 419 
 420 if [ "${BASH_VERSION%.*}" \< "2.05" ]; then
 421     echo "You will need to upgrade to version 2.05 for programmable completion"
 422     return
 423 fi
 424 
 425 shopt -s extglob        # necessary
 426 set +o nounset          # otherwise some completions will fail
 427 
 428 complete -A hostname   rsh rcp telnet rlogin r ftp ping disk
 429 complete -A export     printenv
 430 complete -A variable   export local readonly unset
 431 complete -A enabled    builtin
 432 complete -A alias      alias unalias
 433 complete -A function   function
 434 complete -A user       su mail finger
 435 
 436 complete -A helptopic  help     # currently same as builtins
 437 complete -A shopt      shopt
 438 complete -A stopped -P '%' bg
 439 complete -A job -P '%'     fg jobs disown
 440 
 441 complete -A directory  mkdir rmdir
 442 complete -A directory   -o default cd
 443 
 444 # Compression
 445 complete -f -o default -X '*.+(zip|ZIP)'  zip
 446 complete -f -o default -X '!*.+(zip|ZIP)' unzip
 447 complete -f -o default -X '*.+(z|Z)'      compress
 448 complete -f -o default -X '!*.+(z|Z)'     uncompress
 449 complete -f -o default -X '*.+(gz|GZ)'    gzip
 450 complete -f -o default -X '!*.+(gz|GZ)'   gunzip
 451 complete -f -o default -X '*.+(bz2|BZ2)'  bzip2
 452 complete -f -o default -X '!*.+(bz2|BZ2)' bunzip2
 453 # Postscript,pdf,dvi.....
 454 complete -f -o default -X '!*.ps'  gs ghostview ps2pdf ps2ascii
 455 complete -f -o default -X '!*.dvi' dvips dvipdf xdvi dviselect dvitype
 456 complete -f -o default -X '!*.pdf' acroread pdf2ps
 457 complete -f -o default -X '!*.+(pdf|ps)' gv
 458 complete -f -o default -X '!*.texi*' makeinfo texi2dvi texi2html texi2pdf
 459 complete -f -o default -X '!*.tex' tex latex slitex
 460 complete -f -o default -X '!*.lyx' lyx
 461 complete -f -o default -X '!*.+(htm*|HTM*)' lynx html2ps
 462 # Multimedia
 463 complete -f -o default -X '!*.+(jp*g|gif|xpm|png|bmp)' xv gimp
 464 complete -f -o default -X '!*.+(mp3|MP3)' mpg123 mpg321
 465 complete -f -o default -X '!*.+(ogg|OGG)' ogg123
 466 
 467 
 468 
 469 complete -f -o default -X '!*.pl'  perl perl5
 470 
 471 # This is a 'universal' completion function - it works when commands have
 472 # a so-called 'long options' mode , ie: 'ls --all' instead of 'ls -a'
 473 
 474 _get_longopts () 
 475 { 
 476     $1 --help | sed  -e '/--/!d' -e 's/.*--\([^[:space:].,]*\).*/--\1/'| \
 477 grep ^"$2" |sort -u ;
 478 }
 479 
 480 _longopts_func ()
 481 {
 482     case "${2:-*}" in
 483 	-*)	;;
 484 	*)	return ;;
 485     esac
 486 
 487     case "$1" in
 488 	\~*)	eval cmd="$1" ;;
 489 	*)	cmd="$1" ;;
 490     esac
 491     COMPREPLY=( $(_get_longopts ${1} ${2} ) )
 492 }
 493 complete  -o default -F _longopts_func configure bash
 494 complete  -o default -F _longopts_func wget id info a2ps ls recode
 495 
 496 
 497 _make_targets ()
 498 {
 499     local mdef makef gcmd cur prev i
 500 
 501     COMPREPLY=()
 502     cur=${COMP_WORDS[COMP_CWORD]}
 503     prev=${COMP_WORDS[COMP_CWORD-1]}
 504 
 505     # if prev argument is -f, return possible filename completions.
 506     # we could be a little smarter here and return matches against
 507     # `makefile Makefile *.mk', whatever exists
 508     case "$prev" in
 509         -*f)    COMPREPLY=( $(compgen -f $cur ) ); return 0;;
 510     esac
 511 
 512     # if we want an option, return the possible posix options
 513     case "$cur" in
 514         -)      COMPREPLY=(-e -f -i -k -n -p -q -r -S -s -t); return 0;;
 515     esac
 516 
 517     # make reads `makefile' before `Makefile'
 518     if [ -f makefile ]; then
 519         mdef=makefile
 520     elif [ -f Makefile ]; then
 521         mdef=Makefile
 522     else
 523         mdef=*.mk               # local convention
 524     fi
 525 
 526     # before we scan for targets, see if a makefile name was specified
 527     # with -f
 528     for (( i=0; i < ${#COMP_WORDS[@]}; i++ )); do
 529         if [[ ${COMP_WORDS[i]} == -*f ]]; then
 530             eval makef=${COMP_WORDS[i+1]}       # eval for tilde expansion
 531             break
 532         fi
 533     done
 534 
 535         [ -z "$makef" ] && makef=$mdef
 536 
 537     # if we have a partial word to complete, restrict completions to
 538     # matches of that word
 539     if [ -n "$2" ]; then gcmd='grep "^$2"' ; else gcmd=cat ; fi
 540 
 541     # if we don't want to use *.mk, we can take out the cat and use
 542     # test -f $makef and input redirection
 543     COMPREPLY=( $(cat $makef 2>/dev/null | awk 'BEGIN {FS=":"} /^[^.#   ][^=]*:/ {print $1}' | tr -s ' ' '\012' | sort -u | eval $gcmd ) )
 544 }
 545 
 546 complete -F _make_targets -X '+($*|*.[cho])' make gmake pmake
 547 
 548 
 549 # cvs(1) completion
 550 _cvs ()
 551 {
 552     local cur prev
 553     COMPREPLY=()
 554     cur=${COMP_WORDS[COMP_CWORD]}
 555     prev=${COMP_WORDS[COMP_CWORD-1]}
 556 
 557     if [ $COMP_CWORD -eq 1 ] || [ "${prev:0:1}" = "-" ]; then
 558         COMPREPLY=( $( compgen -W 'add admin checkout commit diff \
 559         export history import log rdiff release remove rtag status \
 560         tag update' $cur ))
 561     else
 562         COMPREPLY=( $( compgen -f $cur ))
 563     fi
 564     return 0
 565 }
 566 complete -F _cvs cvs
 567 
 568 _killall ()
 569 {
 570     local cur prev
 571     COMPREPLY=()
 572     cur=${COMP_WORDS[COMP_CWORD]}
 573 
 574     # get a list of processes (the first sed evaluation
 575     # takes care of swapped out processes, the second
 576     # takes care of getting the basename of the process)
 577     COMPREPLY=( $( /usr/bin/ps -u $USER -o comm  | \
 578         sed -e '1,1d' -e 's#[]\[]##g' -e 's#^.*/##'| \
 579         awk '{if ($0 ~ /^'$cur'/) print $0}' ))
 580 
 581     return 0
 582 }
 583 
 584 complete -F _killall killall killps
 585 
 586 
 587 # A meta-command completion function for commands like sudo(8), which need to
 588 # first complete on a command, then complete according to that command's own
 589 # completion definition - currently not quite foolproof (e.g. mount and umount
 590 # don't work properly), but still quite useful - By Ian McDonald, modified by me.
 591 
 592 _my_command()
 593 {
 594     local cur func cline cspec
 595     
 596     COMPREPLY=()
 597     cur=${COMP_WORDS[COMP_CWORD]}
 598 
 599     if [ $COMP_CWORD = 1 ]; then
 600 	COMPREPLY=( $( compgen -c $cur ) )
 601     elif complete -p ${COMP_WORDS[1]} &>/dev/null; then
 602 	cspec=$( complete -p ${COMP_WORDS[1]} )
 603 	if [ "${cspec%%-F *}" != "${cspec}" ]; then
 604 	    # complete -F <function>
 605 	    #
 606 	    # COMP_CWORD and COMP_WORDS() are not read-only,
 607 	    # so we can set them before handing off to regular
 608 	    # completion routine
 609 	
 610 	    # set current token number to 1 less than now
 611 	    COMP_CWORD=$(( $COMP_CWORD - 1 ))
 612 	    # get function name
 613 	    func=${cspec#*-F }
 614 	    func=${func%% *}
 615 	    # get current command line minus initial command
 616 	    cline="${COMP_LINE#$1 }"
 617 	    # split current command line tokens into array
 618 		COMP_WORDS=( $cline )
 619 	    $func $cline
 620 	elif [ "${cspec#*-[abcdefgjkvu]}" != "" ]; then
 621 	    # complete -[abcdefgjkvu]
 622 	    #func=$( echo $cspec | sed -e 's/^.*\(-[abcdefgjkvu]\).*$/\1/' )
 623 	    func=$( echo $cspec | sed -e 's/^complete//' -e 's/[^ ]*$//' )
 624 	    COMPREPLY=( $( eval compgen $func $cur ) )
 625 	elif [ "${cspec#*-A}" != "$cspec" ]; then
 626 	    # complete -A <type>
 627 	    func=${cspec#*-A }
 628 	func=${func%% *}
 629 	COMPREPLY=( $( compgen -A $func $cur ) )
 630 	fi
 631     else
 632 	COMPREPLY=( $( compgen -f $cur ) )
 633     fi
 634 }
 635 
 636 
 637 complete -o default -F _my_command nohup exec eval trace truss strace sotruss gdb
 638 complete -o default -F _my_command command type which man nice
 639 
 640 # Local Variables:
 641 # mode:shell-script
 642 # sh-shell:bash
 643&nbsp;# End:</PRE
></TD
></TR
></TABLE
><HR></DIV
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="histcommands.html"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="dosbatch.html"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>History Commands</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
>&nbsp;</TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>Converting DOS Batch Files to Shell Scripts</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>