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67 lines
2.2 KiB
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67 lines
2.2 KiB
Markdown
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Grep From Files and Display the File Name
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How do I grep from a number of files and display the file name only?
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When there is more than one file to search it will display file name by default:
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grep "word" filename
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grep root /etc/*
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Sample outputs:
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/etc/bash.bashrc: See "man sudo_root" for details.
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/etc/crontab:17 * * * * root cd / && run-parts --report /etc/cron.hourly
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/etc/crontab:25 6 * * * root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily )
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/etc/crontab:47 6 * * 7 root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.weekly )
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/etc/crontab:52 6 1 * * root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.monthly )
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/etc/group:root:x:0:
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grep: /etc/gshadow: Permission denied
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/etc/logrotate.conf: create 0664 root utmp
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/etc/logrotate.conf: create 0660 root utmp
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The first name is file name (e.g., /etc/crontab, /etc/group). The -l option will only print filename if th
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grep -l "string" filename
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grep -l root /etc/*
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Sample outputs:
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/etc/aliases
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/etc/arpwatch.conf
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grep: /etc/at.deny: Permission denied
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/etc/bash.bashrc
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/etc/bash_completion
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/etc/ca-certificates.conf
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/etc/crontab
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/etc/group
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You can suppress normal output; instead print the name of each input file from **which no output would normally have been** printed:
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grep -L "word" filename
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grep -L root /etc/*
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Sample outputs:
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/etc/apm
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/etc/apparmor
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/etc/apparmor.d
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/etc/apport
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/etc/apt
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/etc/avahi
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/etc/bash_completion.d
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/etc/bindresvport.blacklist
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/etc/blkid.conf
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/etc/bluetooth
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/etc/bogofilter.cf
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/etc/bonobo-activation
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/etc/brlapi.key
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--------------------------------------------------------------------------------
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via: http://www.cyberciti.biz/faq/grep-from-files-and-display-the-file-name/
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作者：Vivek Gite
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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