NAME<\/a> MDK::Common::System \u2212 system\u2212related useful functions<\/p>\n use MDK::Common::System qw(:all);<\/p>\n %compat_arch<\/p>\n architecture compatibility mapping (eg: k6 => i586, k7 => k6 …)<\/p>\n %printable_chars<\/p>\n 7 bit ascii characters<\/p>\n $sizeof_int<\/p>\n sizeof(int)<\/p>\n $bitof_int<\/p>\n $sizeof_int bodies manpages.csv script_extrae_body.sh script.sh usr 8<\/p>\n arch()<\/b><\/p>\n return the architecture (eg: i686, ppc, ia64, k7…)<\/p>\n typeFromMagic( FILENAME, LIST<\/small> )<\/p>\n find the first corresponding magic in FILENAME.<\/small> eg of LIST:<\/small><\/p>\n [ ‘empty’, 0, “\u0000\u0000\u0000\u0000” ], where each entry is [ magic_name, offset, string, offset, string, … ].<\/p>\n list_passwd()<\/b><\/p>\n return the list of users as given by “getpwent” (see perlfunc)<\/p>\n is_real_user()<\/b><\/p>\n checks whether or not the user is a system user or a real user<\/p>\n is_real_group()<\/b><\/p>\n checks whether or not the group is a system group or a real group<\/p>\n list_home()<\/b><\/p>\n return the list of home (eg: \/home\/foo, \/home\/pixel, …)<\/p>\n list_skels()<\/b><\/p>\n return the directories where we can find dot files: homes, \/root and \/etc\/skel<\/p>\n list_users()<\/b><\/p>\n return the list of unprivilegied users (uses the is_real_user function to filter out system users from the full list)<\/p>\n syscall_( NAME, PARA<\/small> )<\/p>\n calls the syscall NAME<\/small><\/p>\n psizeof( STRING<\/small> )<\/p>\n useful to know the length of a “pack” format string.<\/p>\n psizeof(“I I I C C S”) = 4 + 4 + 4 + 1 + 1 + 2 = 16<\/p>\n availableMemory()<\/b><\/p>\n size of swap + memory<\/p>\n availableRamMB()<\/b><\/p>\n size of RAM<\/small> as reported by the BIOS<\/small> (it is a round number that can be displayed or given as “mem=128M” to the kernel)<\/p>\n gettimeofday()<\/b><\/p>\n returns the epoch in microseconds<\/p>\n unix2dos( STRING<\/small> )<\/p>\n takes care of CR\/LF<\/small> translation<\/p>\n whereis_binary( STRING<\/small> )<\/p>\n return the first absolute file in $PATH (similar to which<\/b>(1) and whereis<\/b>(1))<\/p>\n getVarsFromSh( FILENAME<\/small> )<\/p>\n returns a hash associating shell variables to their value. useful for config files such as \/etc\/sysconfig files<\/p>\n setVarsInSh( FILENAME, HASH REF<\/small> )<\/p>\n write file in shell format association a shell variable + value for each key\/value<\/p>\n setVarsInSh( FILENAME, HASH REF, LIST<\/small> )<\/p>\n restrict the fields that will be printed to LIST<\/small><\/p>\n setVarsInShMode( FILENAME, INT, HASH REF, LIST<\/small> )<\/p>\n like setVarsInSh with INT<\/small> being the chmod value for the config file<\/p>\n addVarsInSh( FILENAME, HASH REF<\/small> )<\/p>\n like setVarsInSh but keeping the entries in the file<\/p>\n addVarsInSh( FILENAME, HASH REF, LIST<\/small> )<\/p>\n like setVarsInSh but keeping the entries in the file<\/p>\n addVarsInShMode( FILENAME, INT, HASH REF, LIST<\/small> )<\/p>\n like addVarsInShMode but keeping the entries in the file<\/p>\n setExportedVarsInCsh( FILENAME, HASH REF, LIST<\/small> )<\/p>\n same as “setExportedVarsInSh” for csh format<\/p>\n template2file( FILENAME_IN, FILENAME_OUT, HASH<\/small> )<\/p>\n read in a template file, replace keys @@@key@@@ with value, save it in out file<\/p>\n template2userfile( PREFIX, FILENAME_IN, FILENAME_OUT, BOOL, HASH<\/small> )<\/p>\n read in a template file, replace keys @@@key@@@ with value, save it in every homes. If BOOL<\/small> is true, overwrite existing files. FILENAME_OUT<\/small> must be a relative filename<\/p>\n read_gnomekderc( FILENAME, STRING<\/small> )<\/p>\n reads GNOME-like and KDE-like config files (aka windows-like). You must give a category. eg:<\/p>\n read_gnomekderc(“\/etc\/skels\/.kderc”, ‘KDE’)<\/p>\n update_gnomekderc( FILENAME, STRING, HASH<\/small> )<\/p>\n modifies GNOME-like and KDE-like config files (aka windows-like). If the category doesn\u2019t exist, it creates it. eg:<\/p>\n update_gnomekderc(“\/etc\/skels\/.kderc”, ‘KDE’, fuzzy_pidofs( REGEXP<\/small> )<\/p>\n return the list of process ids matching the regexp<\/p>\n better_arch( ARCH1, ARCH2<\/small> )<\/p>\n is ARCH1<\/small> compatible with ARCH2<\/small> ?<\/p>\n better_arch(\u2019i386\u2019, \u2019ia64\u2019) and better_arch(\u2019ia64\u2019, \u2019i386\u2019) are false<\/p>\n better_arch(\u2019k7\u2019, \u2019k6\u2019) is true and better_arch(\u2019k6\u2019, \u2019k7\u2019) is false<\/p>\n compat_arch( STRING<\/small> )<\/p>\n test the architecture compatibility. eg:<\/p>\n compat_arch(\u2019i386\u2019) is false on a ia64<\/p>\n compat_arch(\u2019k6\u2019) is true on a k6 and k7 but false on a i386 and i686<\/p>\n MDK::Common<\/p>\n MDK::Common::System \u2212 system\u2212related useful functions <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[3007,3491],"class_list":["post-7156","post","type-post","status-publish","format-standard","hentry","category-sin-categoria","tag-man3","tag-mdkcommonsystem"],"gutentor_comment":0,"_links":{"self":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/posts\/7156","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/comments?post=7156"}],"version-history":[{"count":0,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/posts\/7156\/revisions"}],"wp:attachment":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/media?parent=7156"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/categories?post=7156"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/tags?post=7156"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
SYNOPSIS<\/a>
EXPORTS<\/a>
OTHER<\/a>
SEE ALSO<\/a> <\/p>\n
\nNAME <\/a> <\/h2>\n
SYNOPSIS <\/a> <\/h2>\n
EXPORTS <\/a> <\/h2>\n
[ ‘grub’, 0, “xEBG”, 0x17d, “stage1 \u0000” ],
[ ‘lilo’, 0x2, “LILO” ],
sub { my ($F) = @_;
#\u2212 standard grub has no good magic (Mageia’s grub is patched to have “GRUB” at offset 6)
#\u2212 so scanning a range of possible places where grub can have its string
my ($min, $max, $magic) = (0x176, 0x181, “GRUB \u0000”);
my $tmp;
sysseek($F, 0, 0) && sysread($F, $tmp, $max + length($magic)) or return;
substr($tmp, 0, 2) eq “xEBH” or return;
index($tmp, $magic, $min) >= 0 && “grub”;
},<\/p>\n
kfmIconStyle => “Large”)<\/p>\nOTHER <\/a> <\/h2>\n
SEE ALSO <\/a> <\/h2>\n
\n","protected":false},"excerpt":{"rendered":"