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vikram@vikram-Studio-XPS-1645:~/comp$ l
3rdParty/ que.ico SE32.EXE start.fgx Supp/ WebResources/
autorun.inf Readme.txt START.EXE start.fgz Walkthrough/
vikram@vikram-Studio-XPS-1645:~/comp$ ls
3rdParty que.ico SE32.EXE start.fgx Supp WebResources
autorun.inf Readme.txt START.EXE start.fgz Walkthrough
vikram@vikram-Studio-XPS-1645:~/comp$
What is the difference between these two commands?
I tried $ which l, but there's no output.
Also no result for $ man l.
I also tried unsuccesfully to Google it.
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To convert a string to lowercase in Bash, use tr command. tr stands for translate or transliterate. With tr command we can translate uppercase characters, if any, in the input string to lowercase characters.
The -l option (according to the man page) makes "bash act as if it had been invoked as a login shell". Login shells read certain initialization files from your home directory, such as . bash_profile . Since you set the value of TEST in your .
If you type bash -l. at a shell prompt, it will invoke a new shell process (the -l makes it a login shell). If you exit that shell process, you'll be back to your original shell process. Typing exec bash -l. means that the new shell process replaces your current shell process.
You can change the case of the string very easily by using tr command. To define uppercase, you can use [:upper:] or [A-Z] and to define lowercase you can define [:lower:] or [a-z]. The `tr` command can be used in the following way to convert any string from uppercase to lowercase.
l is probably an alias for something like ls -F. The -F option causes ls to append / to directory names, * to executable regular files, etc.
UPDATE : Based on your comment, l is aliased to ls -CF. Single letter options can be "bundled", so ls -CF is equivalent to ls -C -F. The -C option causes ls to list entries by columns. This is the default if ls thinks it's writing to a terminal; the -C option makes it behave this way unconditionally. (ls -1 lists one entry per line, which is the default if ls is *not writing to a terminal.)
type -a l should show you how it's defined. It's probably set in your $HOME/.bashrc.
(The $ is part of your shell prompt, not part of the command.)
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