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发表于 2007-1-18 10:06:41
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blfs上的说明
Which-2.16 and Alternatives
The presence or absence of the which program in the main LFS book is probably one of the most contentious issues on the mailing lists. It has resulted in at least one flame war in the past. To hopefully put an end to this once and for all, presented here are two options for equipping your system with which. The question of which “which” is for you to decide.
The first option is to install the actual GNU which package.
Introduction to Which
Package Information
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Download (HTTP): http://www.xs4all.nl/~carlo17/which/which-2.16.tar.gz
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Download (FTP): ftp://ftp.gnu.org/gnu/which/which-2.16.tar.gz
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Download MD5 sum: 830b83af48347a9a3520f561e47cbc9b
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Download size: 123 KB
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Estimated disk space required: 940 KB
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Estimated build time: less than 0.1 SBU
User Notes: http://wiki.linuxfromscratch.org/blfs/wiki/which
Installation of Which
Install which by running the following commands:
./configure --prefix=/usr &&
make
This package does not come with a test suite.
Now, as the root user:
make install
Contents
Installed Program: which
Installed Libraries: None
Installed Directories: None
Short Descriptions
which
shows the full path of (shell) commands installed in your PATH.
The 'which' Script
The second option (for those who don't want to install the package) is to create a simple script (execute as the root user):
cat > /usr/bin/which << "EOF"
#!/bin/bash
type -pa "$@" | head -n 1 ; exit ${PIPESTATUS[0]}
EOF
chmod -v 755 /usr/bin/which
chown -v root:root /usr/bin/which
This should work OK and is probably the easiest solution for most cases, but is not the most comprehensive implementation. |
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