Commands tagged emerge (6)

  • Resume an emerge, and keep all object files that are already built

    For Gentoo: If you do not use this command, portage will fetch the source again, and rebuild the hole application from the top. This command make portage keep all files that ar allready built


    4
    FEATURES=keepwork emerge --resume
    jonjonarnearne · 2009-07-04 21:09:27 0
  • Re-emerge all ebuilds with missing files (Gentoo Linux)

    Revised approach to and3k's version, using pipes and read rather than command substitution. This does not require fiddling with IFS when paths have whitespace, and does not risk hitting command-line size limits. It's less verbose on the missing files, but it stops iterating at the first file that's missing, so it should be definitely faster. I expanded all the qlist options to be more self-describing.


    3
    emerge -av1 `qlist --installed --nocolor | uniq | while read cp; do qlist --exact $cp | while read file; do test -e $file || { echo $cp; echo "$cp: missing $file (and maybe more)" 1>&2; break; }; done; done`
    Flameeyes · 2010-07-04 19:55:42 2
  • Update all ant packages installed in gentoo

    Update all "ant" packages installed on Gentoo Show Sample Output


    2
    emerge -q1 $(eix -C dev-java -I --upgrade+ --only-names ant)
    neoriddle · 2010-07-07 22:22:02 0
  • For Gentoo users : helping with USE / emerge

    This command puts all the flags of the USE variable actually used by the packages you emerged to the file "use", and those which are unused but available to the file "notuse"


    1
    emerge -epv world | grep USE | cut -d '"' -f 2 | sed 's/ /\n/g' | sed '/[(,)]/d' | sed s/'*'//g | sort | uniq > use && grep ^- use | sed s/^-// | sed ':a;N;$!ba;s/\n/ /g' > notuse && sed -i /^-/d use && sed -i ':a;N;$!ba;s/\n/ /g' use
    Keruspe · 2009-04-19 07:54:08 0
  • Re-emerge all ebuilds with missing files (Gentoo Linux)


    1
    emerge -a `qcheck -aCB`
    R0b0t1 · 2014-07-28 22:23:59 0
  • Find installed packages that are not in the portage tree anymore.

    Problem arises when ebuild gets removed from portage and you end up with old and unmaintained package that you cannot find standard way. This oneliner will give you list of those packages. Show Sample Output


    0
    for f in $(qlist -IC); do stat /usr/portage/"$f" > /dev/null; done
    homoludens · 2010-08-09 11:29:55 0

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Get your external IP address without curl
Curl is not installed by default on many common distros anymore. wget always is :) $ wget -qO- ifconfig.me/ip

grep binary (hexadecimal) patterns
-P activates the Perl regular expression mode.

Use a var with more text only if it exists
See "Parameter Expansion" in the bash manpage. They refer to this as "Use Alternate Value", but we're including the var in the at alternative.

Tar files matching a certain wildcard
This is a shortcut to tar up all files matching a wildcard. Tar doesn't have the --include (apparently).

Scan a document to PDF
Adjust the --resolution and --mode as required (if these options are available for your scanner). The size options (-x, -y, -imageheight, -imagewidth) are for US letter paper. For A4, I think the command would be: $scanimage -p --resolution 250 --mode Gray -x 210 -y 297 | pnmtops -imageheight 11.7 -imagewidth 8.3 | ps2pdf - output.pdf

check open ports without netstat or lsof

convert markdown to PDF
This is the one-line version of this htmldoc + markdown combo to convert markdown formatted text to PDF files to distribute to your non-savvy project managers. http://scottnesbitt.net/ubuntublog/?p=114

execute command on all files of certain types excluding folders that match pattern

Display Spinner while waiting for some process to finish
alternatively, run the spinner for 5 seconds: timeout 5 bash -c 'spinner=( Ooooo oOooo ooOoo oooOo ooooO oooOo ooOoo oOooo); while true; do for i in ${spinner[@]}; do for j in seq 0 ${#i}; do echo -en "\b\b"; done; echo -ne "${i}"; sleep 0.2; done; done'

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

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