Rm
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| − | + | Short for '''remove'''. Seriously, be careful when using this. There is no undelete once you've unlinked a file unless you've aliased [[rm]] to a [[mv]] script that moves files to a trash folder. This practice is not recommended because you will eventually find yourself on a system that doesn't have that alias and make a mistake. However, you can alias a different command to do this task by putting something like this in your startup file: | |
| + | |||
| + | alias del "mv */! .trash" | ||
==Common flags== | ==Common flags== | ||
| Line 7: | Line 9: | ||
-d directories | -d directories | ||
-i confirm before delete | -i confirm before delete | ||
| − | -P overwrite files (with | + | -P overwrite files (with 0xFF's, 0x00's, and 0xFF's again) before deleting them |
-v be verbose | -v be verbose | ||
| + | |||
| + | ==About the -P argument== | ||
| + | |||
| + | Use this argument with extreme care! If you use '''rm -P''' to remove a file that has hard links, the file will be immediately overwritten and its contents will be lost, thus not accessible via the links. For example : | ||
| + | |||
| + | $ '''echo 'Hello World' > foo''' | ||
| + | $ '''ln -h foo bar''' | ||
| + | $ '''cat foo bar''' | ||
| + | Hello World | ||
| + | Hello World | ||
| + | $ '''rm -P foo''' | ||
| + | $ '''cat bar''' | ||
| + | $ '''ls -la bar''' | ||
| + | ls: bar: No such file or directory | ||
See also [[rmdir]] | See also [[rmdir]] | ||
[[Category:System Commands]] | [[Category:System Commands]] | ||
Latest revision as of 03:58, 27 January 2009
Short for remove. Seriously, be careful when using this. There is no undelete once you've unlinked a file unless you've aliased rm to a mv script that moves files to a trash folder. This practice is not recommended because you will eventually find yourself on a system that doesn't have that alias and make a mistake. However, you can alias a different command to do this task by putting something like this in your startup file:
alias del "mv */! .trash"
[edit] Common flags
-r recursive -- same as -R -f force -- do it and damn the consequences -d directories -i confirm before delete -P overwrite files (with 0xFF's, 0x00's, and 0xFF's again) before deleting them -v be verbose
[edit] About the -P argument
Use this argument with extreme care! If you use rm -P to remove a file that has hard links, the file will be immediately overwritten and its contents will be lost, thus not accessible via the links. For example :
$ echo 'Hello World' > foo $ ln -h foo bar $ cat foo bar Hello World Hello World $ rm -P foo $ cat bar $ ls -la bar ls: bar: No such file or directory
See also rmdir
