I always find it difficult to digest the filesize from the ls -al command. For instance, after ls -al, the output give me filesize in bytes.<\/p>\n
Gosh, then I have to start calculating it by taking last 4 digits, slowly count upwards like 1K, 10K, 100K, 1MB, 10MB, 100MB and so on so forth.<\/p>\n
For instance:<\/p>\n
this output:
\n-rw-r–r– 1 walrus dba 137207094 Jul 8 23:12 config.2008032519.s<\/p>\n
137207094 is how much?<\/p>\n
going with my method of counting upwards, it gives me 137MB roughly.<\/p>\n
Is it correct? WRONG. Hell wrong<\/p>\n
The above is bits only. Bear in mind, 1 KB = 1024 bits, 1 MB = 1024 KB and so on so forth<\/p>\n
[ Source ]
\n1 bit = a 1 or 0 (b)
\n4 bits = 1 nybble (?)
\n8 bits = 1 byte (B)
\n1024 bytes = 1 Kilobyte (KB)
\n1024 Kilobytes = 1 Megabyte (MB)
\n1024 Megabytes = 1 Gigabyte (GB)
\n1024 Gigabytes = 1 Terabyte (TB)<\/p>\n
The correct calculation is 137207094 \/ 1024 (bits) \/ 1024 (KB) = 130.8 MB<\/p>\n
Starting in Solaris 10, we have a new option in ls command.<\/p>\n
: \/u01\/apps\/WatchMark\/FlexPM\/classic\/vendor\/Lucent\/ECP\/ftpIN\/in>uname -a
\nSunOS lxserver 5.10 Generic_118833-36 sun4u sparc SUNW,Sun-Fire-V445<\/p>\n
ANCIENT WAY:
\nls -al
\ntotal 270388
\ndrwxr-xr-x 2 walrus dba 1024 Jul 8 23:14 .
\ndrwxr-xr-x 11 walrus dba 512 Jun 17 01:49 ..
\n-rw-r–r– 1 walrus dba 137207094 Jul 8 23:12 config.2008032519.s
\n-rw-r–r– 1 walrus dba 451989 Jul 8 23:12 config.2008032519.split0.bz<\/p>\n
cons: hard to read filesize and output distorted<\/p>\n
NEW WAY:
\nls -alh
\ntotal 269060
\ndrwxr-xr-x 2 flexpm dba 1.0K Jul 8 23:12 .
\ndrwxr-xr-x 11 flexpm dba 512 Jun 17 01:49 ..
\n-rw-r–r– 1 flexpm dba 131M Jul 8 23:12 config.2008032519.s
\n-rw-r–r– 1 flexpm dba 441K Jul 8 23:12 config.2008032519.split0.sm.gz<\/p>\n
pros:
\n– more readable format in terms of file size
\n– contents are properly aligned.<\/p>\n
cons:
\n– need to type extra ‘h’ at the end of ls command<\/p>\n","protected":false},"excerpt":{"rendered":"
I always find it difficult to digest the filesize from the ls -al command. For instance, after ls -al, the output give me filesize in bytes.<\/p>\n
Gosh, then I have to start calculating it by taking last 4 digits, slowly count upwards like 1K, 10K, 100K, 1MB, 10MB, 100MB and so on so forth.<\/p>\n
For […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"_links":{"self":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/3411"}],"collection":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3411"}],"version-history":[{"count":1,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/3411\/revisions"}],"predecessor-version":[{"id":3412,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/3411\/revisions\/3412"}],"wp:attachment":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3411"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3411"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3411"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}